213-631 is a Los Angeles, California phone prefix held by AT&T Mobility.
NANPA, which runs the North American numbering plan, lists AT&T Mobility as the holder of 213-631 for the Los Angeles rate center (LSAN DA 01) in California. The prefix covers 10,000 numbers, 213-631-0000 to 213-631-9999. It is pooled, so blocks of 1,000 of those numbers can be assigned to other carriers. A number may have moved to another carrier since, because people keep their number when they switch.
- Held by
- AT&T Mobility
- What the holder is
- Mobile network
- Rate center
- Los Angeles (NANPA code LSAN DA 01)
- State
- California
- Pooled
- Yes: blocks of 1,000 numbers in it can be with other carriers
- Numbers
- 213-631-0000 to 213-631-9999
- Area code
- Area code 213, Los Angeles
These are NANPA's records for the whole prefix, as of October 1, 2026. One number may have moved to another carrier since, so check the full number below.
Check which carrier a 213-631 number is on today.
The box already holds 213-631-, so type the last four digits. It is the same free check as our carrier lookup. To see who a number is listed to, use our free who called me lookup.
Pick the country, then enter the number without the country code.
Free & rate-limited. No signup required to try.
These are the 16 prefixes closest to 213-631 in area code 213.
- 213-623Pacific Bell (AT&T)
- 213-624Pacific Bell (AT&T)
- 213-625Pacific Bell (AT&T)
- 213-626Pacific Bell (AT&T)
- 213-627Pacific Bell (AT&T)
- 213-628Pacific Bell (AT&T)
- 213-629Pacific Bell (AT&T)
- 213-630Pacific Bell (AT&T)
- 213-632TPX Communications
- 213-633Pacific Bell (AT&T)
- 213-634CenturyLink
- 213-635Teleport (AT&T)
- 213-636Teleport (AT&T)
- 213-637Pacific Bell (AT&T)
- 213-638Metro by T-Mobile
- 213-639Pacific Bell (AT&T)
These are the questions people ask about 213-631 numbers.
Which carrier owns 213-631 numbers?
NANPA's records as of October 1, 2026 list AT&T Mobility as the holder of the 213-631 prefix. The prefix is pooled, so blocks of 1,000 numbers in it can belong to other carriers, and any number can have been ported since. Enter the full number in the box above to see the carrier it is on today.
Where is a 213-631 number from?
The 213-631 prefix is assigned to the Los Angeles rate center (LSAN DA 01) in California. A rate center is the local calling area a prefix belongs to. Mobile and internet phone numbers keep their prefix when the owner moves, so the person calling can be somewhere else.
Who called me from a 213-631 number?
The prefix tells you the carrier and the area, not the person. Enter the full 10-digit number in our free who called me lookup to see who it is listed to, where there is a public record.
Source: NANPA, the North American Numbering Plan Administrator: its central office code assignments, as of October 1, 2026.