Prefix 401-603 — Providence, RI
- Area code
- 401
- Prefix (NXX)
- 603
- Rate center
- Providence
- State
- Rhode Island
- Time zone
- Eastern
- Code holder
- YMAX COMMUNICATIONS CORP. - RI
- OCN
- 363E
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2008-06-12
- LATA
- 130
401-603 identifies a block of numbers in Providence, RI, within the 401 area code. Every US prefix is tied to exactly one rate center; this one is Providence.
The rate center lies in the Providence-Warwick, RI-MA Metropolitan Statistical Area. The serving LATA is 130. Local time follows the Eastern zone.
Treat the on-screen number as a hint, not evidence — 401-603 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.
NANPA's central-office code records list YMAX COMMUNICATIONS CORP. - RI (OCN 363E) as the code holder, assigned June 12, 2008. Because 401-603 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 401-600 | Providence | ONVOY SPECTRUM, LLC |
| 401-601 | Providence | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI |
| 401-602 | Providence | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI |
| 401-604 | Westerly | PAETEC ITEL, LLC |
| 401-606 | Providence | PAETEC ITEL, LLC |
| 401-608 | Newport | PAETEC ITEL, LLC |
FAQ
Where is 401-603 located?
The prefix is assigned to the Providence rate center in RI, area code 401. It is part of the Providence-Warwick, RI-MA Metropolitan Statistical Area.
Which company owns 401-603 numbers?
YMAX COMMUNICATIONS CORP. - RI holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.
Is a call from 401-603 safe to answer?
The prefix itself says nothing about the caller. Legitimate Providence businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.