Warren, RI — rate center
- State
- Rhode Island
- Area codes
- 401
- Active prefixes
- 13
- Carriers
- 10
- Pooled prefixes
- 11
- LATA
- 130
- Metro area
- Providence-Warwick, RI-MA MSA
The Warren rate center (Rhode Island) anchors 13 active prefixes under area code 401. Rate centers, not city limits, are what phone numbers are legally tied to.
NANPA records show 13 active prefixes here across 10 carriers. 11 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.
The rate center belongs to the Providence-Warwick, RI-MA Metropolitan Statistical Area. Routing-wise it sits in LATA 130.
As always with US numbering: a prefix anchored to Warren tells you where the block was issued. The person calling may have ported the number, moved away, or be spoofing it entirely — verify callers through independently found contact details.
Prefixes anchored to Warren
| Prefix | Code holder | Pooled |
|---|---|---|
| 401-237 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | Yes |
| 401-245 | VERIZON NEW ENGLAND INC. | No |
| 401-246 | VERIZON NEW ENGLAND INC. | Yes |
| 401-247 | VERIZON NEW ENGLAND INC. | Yes |
| 401-252 | METROPCS, INC. | Yes |
| 401-289 | COMCAST IP PHONE, LLC | Yes |
| 401-303 | ONVOY SPECTRUM, LLC | Yes |
| 401-310 | BANDWIDTH.COM CLEC, LLC - RI | Yes |
| 401-337 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 401-561 | ONVOY, LLC - RI | No |
| 401-628 | PAETEC ITEL, LLC | Yes |
| 401-694 | PAETEC ITEL, LLC | Yes |
| 401-903 | LEVEL 3 COMMUNICATIONS, LLC - RI | Yes |
FAQ
What area code is Warren, RI?
Warren numbers use area code 401.
How many prefixes does Warren have?
13 active NXX prefixes are anchored to this rate center in NANPA records, held by 10 carriers.
Is a call from a Warren prefix really from Warren?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.