Free Carrier Lookup: Which Network Is This Phone Number On?
Enter the number to find its carrier
Find for free the carrier of a phone number and whether it's a mobile, landline, VOIP or premium-rate line.
The prefix of a number tells you which carrier was originally given that range — not where it is today. Because numbers can be ported between networks, a phone carrier lookup should look beyond the prefix. Our free carrier lookup shows the carrier — the service provider — our sources report for the number and identifies VOIP providers with our own range database.
Original carrier vs current carrier
Mobile number portability lets people keep their number when they switch networks. The result is that the first digits of a number only tell you which carrier the range was allocated to. Confirming the network a number is on today takes a live portability (HLR) check, which only carriers hold in real time. We show the carrier our sources report for the number, not just the one the prefix suggests, and say so when it can't be confirmed.
For US and Canadian numbers the report adds the official record from NANPA or CNA: the company the number block was assigned to, whether that company is a mobile, landline or VoIP provider, and whether the block is shared between several carriers. For other countries it shows the network that holds the number range. Our US area code pages list the companies holding the most exchanges in each of the 20 biggest codes.
Cell phone carrier lookup for US numbers: what carrier is this number?
For a US number, a carrier lookup by phone number answers one question: which company holds the number. Most US cell phone numbers sit on one of the three national networks, Verizon, AT&T or T-Mobile. Prepaid and discount brands run on those networks: Cricket Wireless belongs to AT&T, Metro by T-Mobile and Mint Mobile to T-Mobile, and Visible to Verizon, while Straight Talk uses several of them. That is why a cell phone provider lookup usually shows the network behind the brand rather than the name on the bill. Numbers can also belong to VoIP carriers, the companies behind many app-based and virtual numbers.
Since November 2003, the FCC has let Americans keep their number when they switch carriers. So for US numbers our phone carrier lookup shows two things: the company the number block was originally assigned to in the official NANPA records, and the carrier our other sources report for the number. When they differ, the number has most likely been ported. To see which carriers hold the most numbers in a city, open our pages for the 20 biggest US area codes.
Line types we identify
- Mobile: a SIM-based line on a mobile network or an MVNO (a virtual operator that uses another network’s infrastructure).
- Landline: a fixed geographic line tied to an area code.
- VOIP: internet-based numbers. Fixed VOIP is tied to an address; non-fixed VOIP can be created online and is common in fraud and fake account sign-ups.
- Toll-free and shared-cost: numbers used by businesses where the caller pays nothing or a reduced rate.
- Premium-rate: numbers that charge the caller extra — the target of many call-back scams.
Why the carrier matters
- Fraud prevention: a «bank» calling from a disposable VOIP line, or a customer signing up with one, is a risk signal worth checking.
- Verification and KYC: line type and carrier help decide whether a number is reliable enough for SMS verification.
- Investigations: the carrier tells an investigator who holds the subscriber record — information that, in most countries, the carrier will only release with a legal order.
- Messaging: knowing whether a number is mobile or landline tells you if it can receive texts.
The same report adds what other people have said about the number: anonymous ratings from IntelMind users, how many times it has been looked up, and the official agency to report it to in your country if it turns out to be a scam.
How the lookup works
We validate the number against the international E.164 standard with Google's libphonenumber. We then check the number against the official premium-rate and M2M ranges. Every lookup also includes a spam and fraud reputation check, so you get the carrier and the risk context in one report.
Other checks for this number
Frequently asked questions
How do I find out what carrier a phone number is on?
Choose the country in the lookup above and type the number, or paste it with its international prefix. We validate it and show the carrier our sources report, the line type and whether the number is VOIP. It's free.
Can I tell the carrier from the first digits of a number?
Only the original carrier. Number portability lets people keep their number when they change networks, so the prefix can point to the wrong operator. Only a live portability (HLR) check can confirm the current network with certainty.
Can a carrier lookup tell me if a number is VOIP?
Yes. We identify VOIP numbers from official numbering-plan data and, when our carrier source reports it, the provider behind them (for example, a VoIP carrier such as Onvoy). Non-fixed VOIP numbers are a common signal in scams and fake sign-ups.
Is the phone carrier lookup free?
It costs nothing and there is no account to create. You get the country, carrier, line type and spam reputation of the number, plus the public web trail and a timestamped PDF. We keep it free thanks to advertising.
Will the carrier lookup tell me who owns the number?
The carrier knows who the subscriber is, but in most countries it only releases that record with a court order. We search the public trail of the number instead. If the owner has made it public, the free report shows it with the source. If not, we say so and never invent a name.
Does it work for international numbers?
Yes. Validation works worldwide; carrier data depends on the country. Enter the number with its country code, for example +44 for the UK, +61 for Australia or +1 for the US and Canada.
How do I look up the carrier of a US cell phone number?
Choose the United States in the carrier lookup and enter all ten digits. The report shows the company the number block was assigned to in the official NANPA records, the kind of provider it is (mobile, landline or VoIP), plus the carrier our other sources report. Numbers can be ported between Verizon, AT&T, T-Mobile and other carriers, so the original carrier is not always the current one.
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