How to find business phone numbers for cold calling
Updated July 22, 2026 · 5 min read
Email hit rates for local businesses top out around half the list, because half of them don't publish an address you can find. Phone coverage is essentially total — a Maps listing without a phone number is rare, because the phone is the point of the listing for most of these businesses.
If you sell to trades, clinics, salons, restaurants or shops, calling isn't the fallback. It's usually the main channel, and the list is easy to build.
Where the numbers come from
Straight off the listing. Scrape a category across an area and every row arrives with the number the business itself publishes, in the format Google holds it. That's the number that rings the place, not a switchboard or a data broker's guess.
Two practical notes: format the phone column as text before opening the file in Excel, or a leading “+” and country code will be mangled — the CSV-versus-XLSX guide covers this. And check for duplicate numbers across rows; shared numbers usually mean one owner with several listings, which is one call, not four.
Building a call list worth working
- 1
Sort by geography, not alphabetically
Work one zip code at a time. You'll sound local, you can reference the neighbourhood, and if the call turns into a visit you're not driving across the metro.
- 2
Bring the listing context onto the call sheet
Rating, review count, whether they have a website, and opening hours are all in the export. “I saw you're at 4.7 with 200 reviews but there's no site linked” is a call that gets a conversation; “Hi, is the owner available” is a call that gets hung up on.
- 3
Use the hours column to time the call
Every export row has opening hours. Don't call a restaurant at 7pm, a dentist at 9am, or a roofer during a storm week. Ring when the phone is quiet for their trade.
- 4
Log outcomes back against the place ID
Keep the place ID column in your CRM so a re-scraped list next quarter merges cleanly instead of creating duplicates.
Legal and practical hygiene
Business-to-business calling is treated differently from consumer calling in most markets, but not identically everywhere — the US has do-not-call rules with a business-to-business carve-out, the UK has the CTPS register for corporate subscribers, and several EU countries have their own registers. Check what applies to the market you're calling before you dial, and honour a “don't call again” the first time you hear it.
None of this is legal advice. It is, however, the difference between a list you can keep using and a complaint.
How many calls a list should be
A single category in one mid-sized metro typically lands in the hundreds to low thousands of businesses. At a realistic dialling pace that's weeks of work for one rep — plenty of runway to test whether the offer lands before buying more geography.
Common questions
Are mobile numbers included?
Whatever the business publishes on its listing, which for owner-operated trades is often a mobile. There's no separate mobile-lookup step — it's the same field.
Can I get a decision-maker's name?
Not from Maps. Listings carry the business, not the staff. For owner-operated businesses the person answering usually is the decision-maker; for larger ones you'll be asking at the front desk like everyone else.