How to Find a Business Phone Number & Direct Line (2026 Guide)
Key takeaways
- Google Maps is the best first source for a business phone number, because the business itself maintains the listing and customers correct it when it is wrong.
- For one number, check the listing and the website. For hundreds, pull the listings into a table and filter for phone present.
- Check numbers before you dial. Call tracking numbers, closed businesses and head-office lines waste more calls than wrong digits do.
- Do-not-call rules mostly protect consumers, but business registers exist in some countries and sole traders sit in a grey area. Keep a suppression list either way.
Phone is still the channel that reaches small business owners. Many have no published email, few read LinkedIn, and most answer the shop or van phone during the day. Finding the number is rarely the hard part; finding the right number, for a business that is still open, and calling it in a way you are allowed to, is.
This guide covers where business phone numbers come from, how to collect them at scale without losing accuracy, the checks to run before a call, and the general shape of the rules around unsolicited calls. It is written for anyone selling to local businesses, from a freelancer with a list of thirty to an agency with a list of three thousand.
Google Maps is the primary source
A Google Business Profile is maintained by the business, and the phone number on it is the one the owner wants customers to use. When it is wrong, customers report it and Google prompts the owner to fix it. That feedback loop makes it more reliable than any directory that copies data once and never checks again.
To find one number, search the business name and town in Google Maps and open the listing. The number is under the address. Note whether the listing says the business is temporarily or permanently closed, and check the opening hours so you call when someone will answer.
What else is on a listing, and what is not, is covered in what data you can extract from Google Maps. The short version: the phone number, address, website, rating, review count, category and hours are usually there; an email address and the owner's name are not.
Other places to look
| Source | Best for | Watch out for |
|---|---|---|
| The business website | Direct lines, departments, a second number for a workshop or office | Call tracking numbers that differ from the listing; outdated contact pages |
| Social profiles | Businesses with no website; mobile numbers for sole traders | Numbers in bios are often unmonitored |
| Online directories | Businesses with no Google listing at all | Copied data that is years old; premium listings for chains |
| Company and licensing registers | A registered contact for a company or licence holder | Often an accountant's or agent's number, not the business |
| Trade associations | Members' contact details for a specific trade | Membership lists may not be for marketing use |
When two sources disagree, prefer the Google listing for the main line and the website for a specific department. Record both if they differ, because the difference itself tells you something about call tracking, covered below.
Finding phone numbers at scale
Copying numbers one listing at a time works to about fifty. Beyond that, pull the listings into a table. LeadOutreach searches Google Maps by keyword and location and returns the business name, address, phone, website, rating, review count, category and opening hours for each result. Filter for phone present to drop listings without a number, add a minimum rating if you only want established businesses, and export to CSV.
Two other filters help a calling list. No website finds businesses that are almost certainly phone-first, since there is no contact form to hide behind. The opening hours column tells you when to call each one, and the category column lets you group the list by trade so your script fits. The free plan gives 100 leads a month with no credit card; see the pricing page for current limits.
Keep the export as your working sheet. Add columns for the date called, who answered, the outcome and the next step, and never call from the raw list.
Check numbers before you call
A list of numbers is not a list of calls you can make. Run these checks on each row before dialling, or at least on the first batch.
Call tracking numbers
Many businesses, and most that use a marketing agency, show a different number on Google, on their website and in their ads so they can see which channel produced the call. All of them ring the same phone, so any of them works. The catch is that a tracking number can be retired when a campaign ends, and the same business can appear in your list twice with two numbers. Deduplicate on website and address as well as phone.
Closed businesses
Google marks listings as permanently closed, but the mark can lag months behind reality. A listing with no reviews in a couple of years and a website that no longer loads is a sign. Dial once; a disconnected tone or a different business answering means remove the row.
Head office and shared numbers
Chains, franchises and multi-site clinics often list one central number on every location. Calling it reaches a switchboard, not a local decision-maker. If several rows share a number, treat them as one account and find out who actually makes buying decisions before calling again.
Mobile versus landline
Sole traders in the trades usually list a mobile. That is good for reaching the owner and bad for timing, because they are on a roof or under a sink. Call mobiles early, late or at lunchtime, and keep it short. Format every number consistently, with the country code if you call across borders, so your phone system and CRM match rows correctly.
The rules around unsolicited calls
Most do-not-call schemes exist to protect consumers at home, and calls to a business about its trade are treated differently. The details vary by country, and the general principles below are not legal advice; the wider picture is in is Google Maps scraping legal.
- United States. The National Do Not Call Registry is a list of consumers' numbers. The FTC's guidance for telemarketers states that most calls to a business made to solicit sales from that business are exempt from the do-not-call provisions. State rules and other requirements, such as caller identification and calling hours, still apply.
- United Kingdom. Alongside the register for individuals, there is a corporate register that businesses can join to say they do not want unsolicited sales calls, and callers are expected to screen against it. Sole traders and some partnerships are treated as individuals.
- European Union and elsewhere. Rules for unsolicited marketing calls differ between countries, and several treat a sole trader's number as personal data with stricter rules than a company's switchboard.
- Everywhere. Say who you are and why you are calling, respect a request not to call again, and keep your own suppression list across every channel you use.
The practical rule is simple: call companies about their business, do not call people at home, screen against any business register that exists where you operate, and write down every "please don't call again".
From a number to a conversation
A good calling sheet has more than numbers. Before the first call, make sure every row has the business name, the trade, the town, the opening hours, one thing you noticed about the business and the outcome columns. The one thing you noticed is what turns a cold call into a conversation; the words to use are in the cold calling script for local businesses.
- Export the list with phone present and the filters that fit your offer.
- Deduplicate on phone, website and address, and merge rows that share a number.
- Remove rows marked closed and any number on your suppression list.
- Sort by opening hours so you call each business when it is open and not at its busiest.
- Add one specific observation per row before you dial.
- Call, record the outcome, and set the next step on the same row.
- Re-run the search monthly and add only the businesses that are new.
Sources and further reading
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Frequently asked questions
Search the business name and town in Google Maps and open the listing; the number under the address is the one the business maintains. Check the website for a direct line if you need a specific department, and confirm the listing is not marked as closed before you call.
Use a tool that pulls Google Maps listings into a table. LeadOutreach returns the phone number, address, website, rating, review count, category and opening hours for each business, lets you filter for phone present, and exports to CSV. Deduplicate on phone, website and address before you start calling.
Usually call tracking. Businesses and their agencies use a different number on Google, the website and adverts to see which channel produced the call, and all of them ring the same phone. Record both, deduplicate on address, and expect a tracking number to be retired when a campaign ends.
In the United States the National Do Not Call Registry is for consumers, and the FTC states that most calls to a business to solicit sales from that business are exempt, though state and other rules still apply. The UK has a corporate register that businesses can join. This is not legal advice; check the rules where you operate and keep your own suppression list.
Look for a permanently closed mark on the Google listing, a long gap since the last review, and a website that no longer loads. None of these is conclusive, so dial once; a dead line or a different business answering means remove the row from your list.