This page is about work numbers, not private people
People who search how to find someone phone number want one of two very different things, and this page answers only one of them: you sell to businesses, you have a named contact at a target account, and you need a phone number that reaches that person at work.
Nothing here helps you trace a private individual, and nothing here tells you how to scrape a site.
That line matters. A work number sits in a business context, and the company usually publishes some route to it. A personal cell number of someone who is not your prospect is a different question, with different rules and different harm, and this page does not answer it.
Finding a private person, an old classmate, a former partner, a debtor or anyone who has not put themselves forward in a business role. No people search service is named or recommended on this page, and no scraping method is described.
If that is your situation, stop reading. If you are building a call list for B2B prospecting, carry on.
How to find someone phone number when they work at a company
The search how to find someone phone number usually has a simple answer in B2B: the company already published a way to reach that person, or someone inside the company will connect you. Work through the routes in order of how public the phone number is.
| Route | What you get | Effort | When it works |
|---|---|---|---|
| Company switchboard | A main line and a transfer to the person | Low | Almost always, at companies with a staffed line |
| Published contact page | Main, regional and department phone numbers | Low | Most companies with a sales or support motion |
| Email signature or past thread | A direct line or mobile the person chose to share | Low | When you or a colleague already exchanged email |
| Conference program or webinar page | A speaker contact, often through an organizer | Medium | For people who present in public |
| Public filings and regulator registers | An official company telephone number | Medium | Listed companies and regulated firms |
| Ask a person | Anything from an extension to an introduction | Low | When you share a connection or a customer |
| B2B data vendor | A work or mobile phone number from a licensed database | Paid | At volume, when the routes above do not scale |
The first six cost nothing but time. Start there for named accounts, and keep the paid route for the part of the list you cannot cover by hand.
Switchboard, direct dial or cell phone: which number do you want?
Not all business phone numbers are the same, and sellers who say they cannot find a phone number usually mean they cannot find one specific kind. Decide which one the call needs before you spend an hour looking.
| Type | Reaches | How public it is | Rules to watch |
|---|---|---|---|
| Main line or switchboard | The company, then a transfer | Published on the website and in filings | Ordinary business call rules |
| Department or regional line | A team, then a person | Usually published by location | Ordinary business call rules |
| Direct dial or extension | One person at their desk | Shared selectively, often in signatures | Ordinary business call rules |
| Work mobile | One person anywhere | Shared by the person, or sold by data vendors | FCC restrictions on automated dialing apply |
| Personal cell phone | A private line | Not published for business use | Out of scope for this page |
Most sellers chase the mobile phone number first and skip the two easiest routes. A transfer from the switchboard puts you in the same conversation, with a much better reason to be there and no data sourcing question to answer later.
Free ways to find a phone number, and what free really costs
Every route in the table above except the last one is free. That is worth saying plainly, because most articles about how to find phone numbers move to paid tools in the first few lines. For a short list of named accounts, free sources beat paid data.
- The company website: free, current, and the only source the company itself is accountable for.
- Public filings and registers: free, official, and usually a main phone number rather than a direct line.
- Free business directories: chambers of commerce, trade bodies and local listings carry contact phone numbers for smaller firms.
- Email signatures in your own inbox: free, and often the only place a mobile phone number appears.
- LinkedIn: free to search and confirm a person, though a phone number shows only when that member chose to publish one.
- Asking a human: free, fast, and the only method that produces consent along with the phone number.
What free costs you is time per contact. Reading a site, checking a register and calling a switchboard takes minutes per name, which is fine for twenty accounts and impossible for two thousand.
Free sources also give you something paid tools do not: context. A contact page shows how a company wants to be reached, and a directory listing shows which office serves which region. That information shapes the call, not just the phone number.
Why free consumer lookup tools are not the answer
The free phone number lookup tools that rank for this search are consumer products. They index residential listings and personal records, they go stale, and they are built to sell a subscription once you enter a name.
For a business contact they are the wrong shape. You want a work phone number for a named role at a named company, and a consumer lookup tool returns a personal profile about a private individual instead. The free sources above answer the question you actually asked.
Google, other search engines and online directories
A plain Google search is the cheapest phone number lookup there is, as long as you search for the company rather than the person. Company names, office locations and department names return published pages. Personal names mostly return people search results you should ignore.
- Company name plus contact: finds the contact page and often regional phone numbers in one result.
- Company name plus the city: surfaces the local office listing and its phone number.
- Company name plus press or media: finds the press contact, who is paid to answer.
- The exact phrase in quotation marks: narrows results when the company name is a common word.
- A phone number you already hold: searching the digits tells you which company publishes that line.
Google Business Profile listings deserve a line of their own. For companies with a storefront, a branch or a field team, the listing carries a working phone number the business maintains itself, because customers use it. For head office roles it gives you a switchboard and nothing more.
Online directories sit alongside search. Business directories, industry association lists and local business listings are maintained by someone with a reason to keep the phone numbers working, which is more than can be said for a scraped file of contacts.
| Directory type | What it lists | Use it for |
|---|---|---|
| Chamber of commerce | Local member firms, a phone number and an owner name | Small and mid sized local companies |
| Trade association directory | Member firms by specialty, with a main phone number | Regulated and niche industries |
| Local business listings | Storefront and branch phone numbers by location | Multi site and field businesses |
| Regulator or licensing register | Licensed firms, officers and an official contact | Verifying a company before you call |
| Consumer people directories | Personal records about private individuals | Nothing, in B2B sales |
Business phone number lookup: what the company publishes itself
A business phone number lookup does not need a tool. It needs someone to read the pages the company already maintains, which carry the most current numbers that exist, because the company pays for those lines to work.
- Contact page: the main line, and often a sales line, a support line and separate numbers by region.
- Office or location pages: larger companies list a phone number for each office, which narrows down where your contact sits.
- Press or media page: a press contact with a name and a direct line, usually the fastest human on the site.
- Investor relations page: a named contact with a phone number at listed companies.
- Careers page: a recruiting line, useful only as a last resort route into the building.
- Support portal: a customer line that a colleague may transfer, though that line is paid for by customers.
Record which page the number came from and the date you read it. A phone number with a source you can point to survives the first CRM audit. One without a source does not.
The switchboard route, which most sellers skip
Calling the main line and asking for a person by name is the oldest method here and still the most reliable one. The company answers, you name the person, and you are either transferred or told how to reach them.
It works because you are not pretending to have information you do not have. You want to speak to a named person at a business, on a line the business published for exactly that purpose.
- Say your first name, your company, and the name of the person you want.
- Give the plain reason: what you want to discuss, in one sentence.
- If the person is unavailable, ask for the best time or a direct extension.
- If the answer is no, ask who owns that area instead, and thank them either way.
Whoever answers is doing their job, which includes filtering. Our entry on the gatekeeper covers that relationship in more depth, and cold calling tips covers what to say once you are through.
Email signatures and threads you already have
Many people put a direct line or a mobile number in their email signature. That is a number the person chose to publish to everyone they write to, which makes it the cleanest source you can get without paying for it.
Search your own inbox first, then ask colleagues to search theirs. Support tickets, shared vendor threads, an old request for proposal and a forwarded introduction all carry signatures. So does anything your company received from that account in the past.
The same logic works for email addresses, which is what finding an email on LinkedIn covers. Treat a signature phone number as current only if the message is recent, because people change roles and offices.
Conference programs, webinars and association listings
People who speak in public leave a contact trail on purpose. Conference sites publish speaker pages, association directories list member firms with a phone number, and webinar landing pages often name a host with a way to reach them.
- Event speaker pages: a bio, a company and sometimes an organizer contact who will pass a message on.
- Trade association member directories: firm level phone numbers, with a named contact at smaller members.
- Chamber of commerce listings: local firms with a main line and an owner name.
- Webinar and podcast pages: a host or a guest with a published business contact.
- Published research and white papers: a corresponding author with an office phone number.
These sources are slow per contact, which is why they suit a short list of named target accounts rather than a broad campaign.
Public filings and official registers
Companies that file with a regulator publish contact details as part of the filing. In the United States, the Securities and Exchange Commission runs EDGAR, and its company search shows a registrant's business address and telephone number next to its filings.
That number is the corporate line, not a direct dial, so it is a switchboard starting point with an official source behind it. It is also a sanity check: if the area code you were given does not match the filed address, ask yourself why.
State business registers, licensing boards and procurement portals work the same way for smaller firms. What they give you is the company, the officers and a general contact, which is exactly what company research for sales feeds on.
Asking a person, the route sellers underuse
The fastest way to a direct phone number is often a human who already has it. This is not a trick, and it does not depend on any tool or any database.
- A shared connection: ask for an introduction rather than for the phone number itself.
- A colleague of the prospect: reach a peer, explain the topic, and ask who owns it and how to reach them.
- Your own customers: a customer who knows the account can point you to the right person there.
- The prospect, by email or message: ask for fifteen minutes and a phone number to call.
- An existing champion: someone inside the account who wants your project to happen will hand over extensions.
Asking the prospect directly also settles the consent question, because a phone number a person gives you is a phone number they expect you to use. That is the principle behind warm outreach, and it scales further than most sellers expect.
What LinkedIn actually gives you
LinkedIn Help says a member's contact info section can hold a profile link, an email address, a phone number, a website, instant messenger accounts and a birthday, and that some of that information is visible only to connections while the rest is visible to other members.
Two things follow. First, a phone number is on a profile only if that member put it there. Second, seeing it usually means connecting first, which is a slower path than the switchboard and a much faster one than nothing.
Treat LinkedIn as the place to confirm the person, the title and the office, and to send a message asking for a call. Our guide to LinkedIn prospecting covers that sequence in order.
Finding a phone number from an email address or a LinkedIn profile
The usual starting point is not a blank page. You already have a work email address, or a LinkedIn profile, and no phone number. Both give you more than they look like they do, and neither needs a paid tool.
From an email address
- Read the domain: it names the company, which gives you the website, the contact page and the switchboard.
- Write and ask: a short email asking for fifteen minutes and a phone number to call is free and produces consent.
- Check every reply: the signature on any answer often carries the direct line or the mobile phone number.
- Search the address itself: a Google search on the address sometimes surfaces a conference page or a filing with contact details.
- Do not guess digits: extensions follow patterns, and dialing a guessed pattern reaches strangers.
From a LinkedIn profile
- Confirm the basics first: the current title, the company and the office location, which decide which phone numbers are even plausible.
- Open contact info: a phone number appears there only when that member published one.
- Open the company page: it links the website, where the published numbers live.
- Read recent activity: an event, a webinar or a launch gives you a reason to call, which matters more than the phone number.
- Send a message: asking a person for a call is faster than any lookup, and it is free.
Whichever way in you take, the LinkedIn profile and the email address are evidence about the person and the company. The phone number is a logistics detail. Sellers who invert that order collect phone numbers they have no reason to use.
Phone number finder tools and data vendors, as categories
At some point the manual routes stop scaling. That is what B2B contact databases and phone number finder tools exist for. This page names no tools and quotes no coverage figures, because those figures come from the vendors themselves.
| Tool category | What you send it | What it returns | Main risk |
|---|---|---|---|
| Contact database | A filter: role, industry, company size, region | Lists of business contacts with work email and sometimes phone numbers | Stale records and unclear sourcing |
| Enrichment tool | Names and companies you already own | The missing fields on your own contacts | Silent low match rates on small companies |
| Browser extension | A profile you are looking at | Contact data for that one person | Terms of the site you are browsing |
| Waterfall tool | One request across several suppliers | A match from whichever source has one | Mixed data quality in a single field |
| Verification tool | Phone numbers you already hold | Line type, carrier and whether the line is live | Confuses valid with verified |
Notice what none of these tools do: none of them create consent, and none of them tell the person you are about to call. That part is still on you, whichever tool produced the phone number.
Whatever you buy, keep your own record of which contacts were verified, when, and against what information. Vendor tools refresh on their own schedule, and a phone number that was correct on the day you bought it stays correct only until that person moves.
Name, title, company, work email and sometimes a work phone or mobile, refreshed on the vendor's own schedule.
You send a name and a company, the service returns the missing fields, and your own list stays the system of record.
The service queries multiple sources in order until one returns a match, which raises coverage and mixes data quality.
Line type, carrier and whether the phone number is active, run before a list ever reaches a dialer.
Vendors publish match rates and accuracy claims measured on their own customers and their own test sets. None of those figures are repeated on this page. Run a paid sample against a list you can verify yourself, and compare vendors on that instead.
Ask any vendor where the data came from, how often it is refreshed, how a person is removed on request, and what happens to a record when that person changes jobs. Our B2B data entry covers the categories, and lead enrichment covers the workflow.
What not to do
Some methods that rank for this search are wrong for a B2B seller. They are built for consumer curiosity, they mix in personal records, and using them puts your company in a category you do not want to be in.
- People search sites: they compile personal records about private individuals. A work call is not a reason to buy a personal profile, and this page names none of them.
- Scraped databases: lists assembled by harvesting sites against their terms carry no consent trail and no removal process.
- Reverse lookups on a personal number: identifying a private line is not prospecting, whatever the tool calls itself.
- Buying a bulk list with no stated source: if the seller cannot say where each record came from, neither can you.
- Guessing extensions: dialing through a range to see who answers wastes your time and annoys a whole floor.
- Pretending to be someone else: claiming to be a customer, a candidate or a colleague to get transferred is misrepresentation, and the FTC extended the Telemarketing Sales Rule prohibitions on misrepresentation to business to business calls in 2024.
The practical test is simple. If you could not tell the person on the call exactly how you got their phone number, do not dial it.
Verify the phone number before you dial it
A number that reaches the wrong person costs more than a phone number you never found. Before a list goes anywhere near a dialer, run it through the same checks every time.
| Check | What you are testing | What to do when it fails |
|---|---|---|
| Source recorded | Whether you can name where the phone number came from | Drop it, or find it again on a page you can cite |
| Format and country code | Whether the phone number is valid for its country | Fix the format, or discard it if the digits do not fit |
| Area code against the office | Whether the phone number matches the location on file | Treat it as unconfirmed and use the switchboard |
| Line type | Whether it is a landline or a mobile, which changes the rules | Tag it, because mobile phone numbers carry more restrictions |
| Still employed there | Whether the person is still in that role | Requalify the account before anyone calls |
| Second source agrees | Whether two independent sources show the same digits | Call the published company line instead |
The FCC also runs a reassigned numbers database, and 47 CFR 64.1200 gives a caller a safe harbor when a query to it wrongly reports that a phone number was not disconnected. That matters most for phone numbers you collected months ago, which is the mechanism behind data decay.
Valid is not the same as verified
A verification tool that says a phone number is live has told you the line rings. It has not told you whose line it is, whether your contact still works there, or whether the switchboard will admit the person exists.
So keep two states in the record. Verified means a human confirmed that this phone number reaches this person at this company, and you wrote down how. Unverified means the digits look plausible. Only verified contacts belong in a call list you hand to another rep.
Most lists contain a mix, and that is fine as long as the mix is visible. A list where verified and unverified contacts look identical is a list nobody can prioritize, which is half of the problem a sales data program exists to solve.
The US rules that apply once you have the phone number
Two sets of rules matter in the United States: the FTC Telemarketing Sales Rule in 16 CFR part 310, and the FCC rules in 47 CFR 64.1200. B2B sellers often assume neither applies to them. That is half right, and the wrong half is expensive.
What the business call exemption covers
16 CFR 310.6 exempts telephone calls between a telemarketer and any business to induce the purchase of goods or services by that business. The exemption has limits written into it: it does not cover the misrepresentation prohibitions, and it does not cover calls to induce the retail sale of nondurable office or cleaning supplies.
So a normal B2B sales call sits outside most of the Telemarketing Sales Rule. It never sits outside the rules against misstating who you are, what you sell or what it costs.
What still applies in practice
| Rule | Where it comes from | What it means for a B2B call |
|---|---|---|
| Calling hours, 8:00 a.m. to 9:00 p.m. local time | 16 CFR 310.4(c), 47 CFR 64.1200(c)(1) | Written for a residence or a residential subscriber, so keep to business hours anyway |
| National Do Not Call Registry | 47 CFR 64.1200(c)(2), 16 CFR 310.4(b) | Covers residential subscribers, and the FTC says most calls to a business to sell to that business are exempt |
| Your own do not call list | 16 CFR 310.4(b)(1)(iii)(A), 47 CFR 64.1200(d) | When a person asks you to stop, log it and stop, whoever they are |
| Autodialed or prerecorded calls to mobiles | 47 CFR 64.1200(a)(1)(iii) and (a)(2) | Needs prior express consent, and prior express written consent when the call is telemarketing |
| Caller ID transmission | 16 CFR 310.4(a)(8) | Send a real phone number that a person answers during business hours |
| Identifying yourself | 16 CFR 310.4(d), 47 CFR 64.1200(d)(4) | Give your name, your company and a way to contact it |
The mobile number question
47 CFR 64.1200(a)(1)(iii) restricts calls made with an automatic telephone dialing system or an artificial or prerecorded voice to numbers assigned to cellular service, absent prior express consent. Paragraph (a)(2) requires prior express written consent when such a call is telemarketing.
Read that closely: the restriction is written around the dialing technology and the recorded voice. A rep dialing by hand and speaking live is not the situation those paragraphs describe. Your legal team, not this page, decides what your dialer counts as.
Stopping when asked
Under 47 CFR 64.1200(a)(10), a called party can revoke consent by any reasonable method, and the caller must honor it within a reasonable time that cannot exceed ten business days. Paragraph (d)(6) requires a do not call request to be honored for five years.
The FTC adds practical detail for the rules it enforces: a company that must use the registry has to synchronize against it at least every thirty one days, an established business relationship allows calls for up to eighteen months after the last purchase, delivery or payment, and an inquiry or application allows three months.
This section summarizes published federal rules that were read in full for this page. State law, sector rules and law outside the United States add more. Have counsel review your calling program before you scale it.
How to find a work phone number, step by step
Confirm the person and the office first
Check the current title, the company and which location they sit in. A phone number for the right name at the wrong company is worse than no phone number at all.
Search what your own company already holds
Look in the CRM, the support desk and colleagues' inboxes for a signature, a ticket or an old thread from that account.
Read the company's published pages
Contact, location, press and investor pages give you the main line, the regional line and sometimes a named contact with a direct phone number.
Call the main line and ask by name
Give your name, your company and the reason in one sentence, then ask to be put through or ask for the best time to call back.
Use a licensed vendor only for what is left
Send the remaining names to an enrichment service, test the sample against records you can verify, and keep a source field on every record.
Verify, log the source, then dial
Run the format, area code and line type checks, write the source and the date into the CRM, and call within business hours.
Where to find phone numbers, by company type
The best route changes with the kind of company you are calling. A local firm and a listed enterprise publish very different things, and knowing which is which saves you from searching for phone numbers that were never published.
| Company type | Best free source | Second try | What data vendors add |
|---|---|---|---|
| Local service business | Google Business Profile and local directories | Chamber of commerce listing | Little, because the owner's line is already public |
| Small B2B firm | Website contact page and the founder's signature | LinkedIn message asking for a call | Coverage is thin, so verify anything you buy |
| Mid sized company | Location pages and the switchboard | A colleague of your contact | Direct dials that are not published anywhere |
| Listed enterprise | Investor and press pages, SEC filings | Switchboard with an extension request | Named contacts behind a large switchboard |
| Regulated firm | Licensing register or regulator directory | Association member directory | Role level contacts inside the licensed entity |
| Fast growing startup | LinkedIn, event pages, the careers page | An introduction from an investor or customer | New hires, though records lag behind reality |
Read the row before you start. Spending twenty minutes hunting a direct dial at a five person company, where the founder answers the published line, is the most common way to waste a morning.
What to write into the CRM
A phone number without provenance becomes a liability the moment someone asks where it came from. Store the context next to the digits.
This is the same hygiene that CRM data cleansing enforces after the fact. Doing it at entry costs a few seconds per record and saves a cleanup project later.
The phone number is the easy part
Getting through to a person you have never spoken to is a separate skill from finding their line. A well sourced phone number dialed with nothing to say is still a wasted call, and it burns the account for the next rep.
Before the first dial, know what changed at the account, what you think the person owns, and what you want to happen next. Our cold calling scripts cover the call itself, and sales cadence covers how the call sits alongside email and LinkedIn.
It also helps to be honest about where phone numbers sit in a modern outreach plan. A phone call is one channel among several, and most sales teams reach a contact through a mix of email, LinkedIn and calls rather than through any one of them.
So collect phone numbers for the accounts where a call is the right next step, not for every name in the list. Email and LinkedIn cover the rest, and the prospect list you build first decides which accounts ever earn a call.
Common mistakes
- Treating a consumer people search result as a B2B prospecting source.
- Saving a number with no source field, so nobody can defend it later.
- Calling a mobile with an autodialer or a recorded message without checking consent.
- Assuming the business call exemption means no rules apply at all.
- Skipping the switchboard because it feels old fashioned.
- Reusing a number from a signature that is several years old.
- Ignoring a spoken request to stop calling because it was never written down.
- Buying a vendor's coverage claim instead of testing a sample yourself.
- Searching Google for the person by name instead of the company, then landing on consumer directories.
- Storing a cell phone number without recording that it is a cell, so it reaches an automated outreach tool later.
- Treating a free lookup result as verified information because the tool sounded confident.
What to say when the main line answers
This example was written for this page. It is the short version of the switchboard ask: who you are, who you want and why, with no pretending to be anyone else.
Hi, this is {{firstName}} from {{company}}. Could you put me through to {{prospectName}} in {{department}}, please? It is about {{topic}}. I am not expected, so if this is a bad time I am happy to call back. If {{prospectName}} is not the right person for {{topic}} any more, could you tell me who took that over? Thank you either way.
You use it to imply a relationship that does not exist, or you refuse to say why you are calling. Both turn a neutral request into a reason to block you, and the person who answers will remember your company name.
Frequently asked questions
How do I find someone's phone number for B2B sales?
Start with the free routes: the company switchboard, the contact and location pages, public filings, a Google search on the company name, and any email signature you already hold. Ask a shared connection. Use a licensed B2B data vendor only for the names those routes miss.
What is a business phone number lookup?
A business phone number lookup is finding the line that reaches a company or a person at that company. The reliable version is a Google search plus the company's own published pages and filings, then a licensed contact database for the names those free sources do not cover.
Can I find someone's personal cell phone number?
This page does not help with that, and it names no free or paid tools that do. It covers reaching a named business contact at work. Tracing a private individual is a different question, with different rules and different harm.
Is it legal to call a business prospect who never contacted me?
In the United States, 16 CFR 310.6 exempts telephone calls between a telemarketer and a business to induce that business to buy. The exemption does not cover misrepresentation, and state law and sector rules add more, so have counsel review your program.
Does the National Do Not Call Registry apply to B2B calls?
The registry covers residential subscribers, and the FTC says most calls to a business made to sell to that business are exempt from the do not call provisions. Your own do not call list still applies to anyone who asks you to stop.
Can I call a prospect's mobile number?
47 CFR 64.1200(a)(1)(iii) restricts calls to cellular numbers made with an automatic telephone dialing system or an artificial or prerecorded voice without prior express consent, and (a)(2) requires written consent for telemarketing. How your dialer is classified is a question for your legal team.
What are the legal calling hours in the United States?
16 CFR 310.4(c) and 47 CFR 64.1200(c)(1) set a window of 8:00 a.m. to 9:00 p.m. local time at the called party's location. Both are written around calls to a residence or a residential subscriber, but business hours are the sensible default anyway.
How do I get past the gatekeeper to reach a direct line?
Do not try to get past them. Say your first name, your company and the person you want, give the reason in one sentence, and ask for a transfer or a better time. If the answer is no, ask who owns that area now.
Are free phone number lookup tools and people search sites safe for prospecting?
No. Those tools are built for consumer curiosity and compile personal records about private individuals, which is the wrong basis for a business call. Stay with published company sources, free business directories, direct requests and licensed B2B data vendors.
How do I verify a phone number before calling it?
Check that you recorded the source, that the format and country code are valid, that the area code matches the office on file, and what the line type is.
A phone number is verified only when a human confirms it reaches that person, not when a tool says the line rings.
How often does B2B phone data go out of date?
People change roles, offices and phone numbers constantly, so every record has a shelf life. Record the date you obtained each phone number, recheck your contacts on a schedule rather than after a call fails, and treat old signature numbers as unverified.
What should I record in the CRM with a phone number?
Store the number and line type, the source, the date obtained, the verification status, any notes about consent or a request not to be called, and a do not call flag that removes the number from every future list.
Do I have to stop calling if someone asks me to?
Yes. 47 CFR 64.1200(a)(10) says a called party may revoke consent by any reasonable method and the caller must honor it within a reasonable time that cannot exceed ten business days, and paragraph (d)(6) requires a do not call request to be honored for five years.
Should I use a data vendor or find numbers by hand?
Both. Work named accounts by hand, because published sources and a direct ask give you the cleanest numbers. Use a licensed vendor for volume, test a paid sample against records you can verify, and keep a source field on every record it returns.
- Electronic Code of Federal Regulations, 16 CFR 310.6, for the exemption covering telephone calls between a telemarketer and a business, checked Sep 23, 2026.
- Electronic Code of Federal Regulations, 16 CFR 310.4, for calling hours, do not call duties, caller ID transmission and the required oral disclosures, checked Sep 23, 2026.
- Electronic Code of Federal Regulations, 47 CFR 64.1200, for the FCC rules on autodialed and prerecorded calls, company do not call lists, caller identification, revoking consent and the reassigned numbers safe harbor, checked Sep 23, 2026.
- Federal Trade Commission, Complying with the Telemarketing Sales Rule, for which calls are exempt and what telemarketers must disclose, checked Sep 23, 2026.
- Federal Trade Commission, Q and A for Telemarketers and Sellers About DNC Provisions in the TSR, for the business call exemption, the established business relationship windows and the 31 day scrub, checked Sep 23, 2026.
- Federal Trade Commission, FTC Implements New Protections for Businesses Against Telemarketing Fraud, for misrepresentation protections extended to business to business calls in 2024, checked Sep 23, 2026.
- LinkedIn Help, Contact info section of your profile, for what a member can list and who can see it, checked Sep 23, 2026.
- US Securities and Exchange Commission, EDGAR company search, for the business address and telephone number shown with a registrant's filings, checked Sep 23, 2026.
- Jeluvi entries this guide builds on: cold calling, company research for sales, gatekeeper, B2B data, lead enrichment, data decay.
- The switchboard script and every example on this page were written for this page. No vendor is named, no coverage or match rate is quoted, and no phone number is reproduced.