Question 1

How do I find out what carrier a phone number uses?

Accepted Answer

Every US phone number's NPA-NXX (area code + 3-digit prefix), and often its thousands-block, is assigned to a specific carrier in public numbering records. Enter the number above and we look up the carrier that the block was assigned to, plus whether it's a wireless or landline block and its rate center.

Question 2

Is the carrier accurate if the number was ported?

Accepted Answer

We show the carrier the number block was originally assigned to. If the owner ported (transferred) the number to a different carrier, the current carrier can differ. For a real-time, porting-aware result, use a live lookup (the network can only be confirmed via a paid HLR/LRN query).

Question 3

Can I tell if a number is a cell phone or a landline?

Accepted Answer

Often yes. Number blocks are tagged as wireless or landline/VoIP in the assignment data, so we can show the likely line type — though porting and VoIP can blur the line.

Question 4

Is carrier lookup free?

Accepted Answer

Yes — this assigned-carrier lookup is free and uses public numbering data. Live, porting-accurate lookups from paid data providers cost per query.

Phone carrier lookup