Free carrier lookup
Phone Number Carrier Lookup
Find the phone company behind a number. You’ll also see whether it’s a cell phone, landline or VoIP number, and where it was issued.
- Encrypted
- 8M+ lookups a month
- 250+ countries and territories
- Since 2005
What you get
What a carrier lookup shows
Every result lists the number’s phone company next to its line type and origin, so you know who serves it and whether to call or text.
Phone company
The carrier
The company the number belongs to. For US numbers it’s checked in real time, so a number that moved from one carrier to another shows the new one.
Phone line type
Cell, landline or VoIP
Know whether to text or call. Toll-free numbers and fake numbers, such as 555-555-5555, are flagged too.
VoIP provider
Google Voice, TextNow and more
For VoIP numbers, the result often names the app or provider behind the number. Learn more about checking VoIP numbers.
Number origin
Where it was issued
The city and state from the area code and prefix, or the country elsewhere. It doesn’t show where the phone is now.
Reading the result
Why the carrier can surprise you
Phone numbers move. When someone switches carriers and keeps their number, the number is “ported”, and its area code no longer tells you who serves it. A carrier lookup shows the company that has it now, not the one it started with.
The name can also differ from the brand on someone’s bill. Many phone brands run on another company’s network, so a prepaid brand’s number may show the network it runs on, such as T-Mobile or Verizon, rather than the brand.
US results reflect porting. Canadian results may show the carrier the number was first assigned to, and some numbers have no carrier on record.
More than one number
Carrier lookup API and bulk lookups
The same lookup, at $0.004 a number. No subscription and no monthly minimum.
Look up a whole list
Upload a CSV or Excel file and get a phone company, line type and origin for every row, in the original order. Batches start at $35, and you see your exact total before you pay.
- No account needed
- Volume discounts from 250,000 numbers
- Results by email with a download link
Carrier lookup API
One request returns the carrier, line type and, for US numbers, whether the number was ported. New accounts get 100 free trial lookups, no card required.
Example request · test number
curl https://api.phonevalidator.com/v5/lookups \
-H "Authorization: Bearer $PHONEVALIDATOR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"phone_number":"+12025550101"}'Response excerpt
{
"phone_number": "+12025550101",
"valid": true,
"line_type": "mobile",
"carrier": "T-MOBILE",
"ported": true,
"test_mode": true
}Questions
Carrier lookup questions
How do I find out what carrier a phone number is with?
Enter the number in the lookup at the top of this page, with its area code, and select Check phone number. The result names the carrier the number is assigned to now, such as Verizon, AT&T or T-Mobile for a US mobile number, along with its line type.
Is the carrier lookup free?
Yes, for single numbers on this page, within a daily limit. Lists and the API cost $0.004 a lookup.
Does it work for numbers outside the US?
Yes. Enter the number with + and the country code. We cover numbers from more than 250 countries and territories; see coverage.
Will it tell me who owns the number?
No. It checks the number, not the person. It doesn’t show a name, an address or where the phone is.
Can I tell if a number was ported?
Yes, with the API or a lookup from your account. The free lookup shows the current carrier for US numbers but not whether the number was ported.
Need carriers for a whole list?
Upload a CSV or Excel file, or check numbers as they arrive with the API. $0.004 a lookup, the same either way.