Folsom, CA — rate center
- State
- California
- Active prefixes
- 73
- Carriers
- 16
- Pooled prefixes
- 56
- LATA
- 726
- Metro area
- Sacramento--Roseville--Folsom, CA MSA
Phone numbers "from Folsom" are, precisely speaking, numbers whose prefixes are anchored to the Folsom rate center of California, under 279, 916.
The rate center currently carries 73 working prefixes across 16 carriers. 56 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.
The rate center belongs to the Sacramento--Roseville--Folsom, CA Metropolitan Statistical Area. Routing-wise it sits in LATA 726.
Multiple area codes over one rate center (279/916) is the overlay pattern: same geography, different first three digits.
A Folsom prefix on caller ID is a starting point, not proof of origin — numbers travel with their owners and displays can be spoofed. Use official callback numbers for anything sensitive.
Prefixes anchored to Folsom
| Prefix | Code holder | Pooled |
|---|---|---|
| 916-220 | T-MOBILE USA, INC. | No |
| 916-221 | LEVEL 3 COMMUNICATIONS, LLC - CA | Yes |
| 916-235 | LEVEL 3 COMMUNICATIONS, LLC - CA | Yes |
| 916-260 | NEW CINGULAR WIRELESS PCS, LLC | Yes |
| 916-292 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Yes |
| 916-293 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 916-294 | PACIFIC BELL | Yes |
| 916-337 | NEW CINGULAR WIRELESS PCS, LLC | Yes |
| 916-350 | AT&T - LOCAL | Yes |
| 916-351 | PACIFIC BELL | No |
| 916-353 | PACIFIC BELL | Yes |
| 916-355 | PACIFIC BELL | No |
| 916-356 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | No |
| 916-357 | PACIFIC BELL | Yes |
| 916-358 | PACIFIC BELL | Yes |
| 916-365 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | Yes |
| 916-370 | METROPCS, INC. | Yes |
| 916-377 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | No |
| 916-404 | ONVOY, LLC - CA | No |
| 916-413 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Yes |
| 916-439 | METROPCS, INC. | Yes |
| 916-458 | LEVEL 3 COMMUNICATIONS, LLC - CA | Yes |
| 916-461 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Yes |
| 916-467 | AT&T ENTERPRISES, LLC | Yes |
| 916-496 | METROPCS, INC. | Yes |
| 916-500 | ONVOY, LLC - CA | Yes |
| 916-510 | T-MOBILE USA, INC. | Yes |
| 916-542 | BANDWIDTH.COM CLEC, LLC - CA | Yes |
| 916-586 | NEW CINGULAR WIRELESS PCS, LLC | Yes |
| 916-597 | BANDWIDTH.COM CLEC, LLC - CA | Yes |
| 916-605 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Yes |
| 916-608 | PACIFIC BELL | No |
| 916-618 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | Yes |
| 916-673 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 916-693 | T-MOBILE USA, INC. | Yes |
| 916-790 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Yes |
| 916-805 | ONVOY, LLC - CA | Yes |
| 916-817 | PACIFIC BELL | Yes |
| 916-836 | BANDWIDTH.COM CLEC, LLC - CA | Yes |
| 916-850 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | Yes |
| 916-906 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Yes |
| 916-932 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | Yes |
| 916-933 | PACIFIC BELL | No |
| 916-934 | PACIFIC BELL | Yes |
| 916-935 | PACIFIC BELL | No |
| 916-936 | NEW CINGULAR WIRELESS PCS, LLC | Yes |
| 916-939 | PACIFIC BELL | No |
| 916-941 | PACIFIC BELL | Yes |
| 916-954 | BANDWIDTH.COM CLEC, LLC - CA | Yes |
| 916-983 | PACIFIC BELL | No |
| 916-984 | PACIFIC BELL | No |
| 916-985 | PACIFIC BELL | No |
| 916-986 | PACIFIC BELL | No |
| 916-987 | PACIFIC BELL | No |
| 916-988 | PACIFIC BELL | No |
| 916-989 | PACIFIC BELL | No |
| 916-990 | PACIFIC BELL | Yes |
FAQ
What area code is Folsom, CA?
Folsom is served by 2 area codes — 279, 916 — which overlay the same territory.
How many prefixes does Folsom have?
73 active NXX prefixes are anchored to this rate center in NANPA records, held by 16 carriers.
Is a call from a Folsom prefix really from Folsom?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.