Prefix 617-251 — Cambridge, MA
Numbers in the 617-251 prefix are registered to the Cambridge rate center in MA, inside area code 617. The prefix is the second block of a ten-digit US number (617-251-XXXX) and pins the number to a billing locality.
Code-holder of record: OMNIPOINT MIAMI E LICENSE, LLC (OCN 6889), assigned February 14, 2001. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 617-251 numbers may be served by different companies.
The rate center lies in the Boston-Cambridge-Newton, MA-NH Metropolitan Statistical Area. The serving LATA is 128. Local time follows the Eastern zone.
Spoofing means this prefix on your screen doesn't guarantee a Cambridge caller. Verify independently before trusting a request for money or data.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 617-248 | Boston | VERIZON NEW ENGLAND INC. |
| 617-249 | Quincy | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 617-250 | Cambridge | TC SYSTEMS, INC. |
| 617-252 | Cambridge | VERIZON NEW ENGLAND INC. |
| 617-253 | Cambridge | VERIZON NEW ENGLAND INC. |
| 617-254 | Brighton | VERIZON NEW ENGLAND INC. |
FAQ
Where is 617-251 located?
The prefix is assigned to the Cambridge rate center in MA, area code 617. It is part of the Boston-Cambridge-Newton, MA-NH Metropolitan Statistical Area.
Which company owns 617-251 numbers?
OMNIPOINT MIAMI E LICENSE, LLC 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 617-251 safe to answer?
The prefix itself says nothing about the caller. Legitimate Cambridge businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.