Free tool ยท 230+ countries
Phone carrier lookup
Enter a mobile number to see which network it was issued to, together with its country, line type and formats.
What you get
- Mobile network the number block was assigned to
- Valid or invalid, mobile or landline
- Country and calling code
- All standard number formats
Private by design
The check runs in your browser with Google's libphonenumber data. The numbers you enter are not sent to our servers or stored.
Building this into an app? Use the Carrier lookup API and its validate endpoint documentation.
How carrier lookup works
Telecom regulators hand out phone numbers to operators in blocks. In Nigeria, for example, numbers starting with 0803 were issued to MTN, and numbers starting with 0802 to Airtel. The lookup compares your number with more than 30,000 of these blocks from Google’s libphonenumber data and returns the operator.
When you need the API
The free tool covers mobile prefixes from libphonenumber. The numlookupapi API looks numbers up in a numbering-plan database that also covers landlines and US and Canadian number blocks, and returns carrier, line type and location in one request:
{
"valid": true,
"international_format": "+12069220880",
"country_code": "US",
"location": "Seattle",
"carrier": "",
"line_type": "landline"
}
The carrier is still the one the number block was assigned to. If you need the network that serves a ported number today, you need a live network lookup, see the HLR lookup API (coming soon).
See the mobile prefix lists for every network in a country.
Frequently asked questions
How do I find out which carrier a phone number belongs to?
Why does the carrier lookup not work for US numbers?
Is the carrier still correct if the number was ported?
Can I find out who owns a phone number?
Phone number API
Validate numbers like this in your app
numlookupapi checks any phone number worldwide in one request and returns validity, line type, carrier, location and every standard format as JSON.
Read the documentation100 free requests every month. No credit card required.
GET https://api.numlookupapi.com/v1/validate/+12069220880
{
"valid": true,
"number": "12069220880",
"local_format": "2069220880",
"international_format": "+12069220880",
"country_prefix": "+1",
"country_code": "US",
"country_name": "United States of America",
"location": "Seattle",
"line_type": "landline",
"e164_format": "+12069220880",
"national_format": "(206) 922-0880"
}