Prefix 617-781 — Dorchester, MA
- Area code
- 617
- Prefix (NXX)
- 781
- Rate center
- Dorchester
- State
- Massachusetts
- Time zone
- Eastern
- Code holder
- COMMIO, LLC
- OCN
- 939H
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2024-02-09
- LATA
- 128
617-781 identifies a block of numbers in Dorchester, MA, within the 617 area code. Every US prefix is tied to exactly one rate center; this one is Dorchester.
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.
Treat the on-screen number as a hint, not evidence — 617-781 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.
Code-holder of record: COMMIO, LLC (OCN 939H), assigned February 9, 2024. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 617-781 numbers may be served by different companies.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 617-778 | Boston | PAETEC ITEL, LLC |
| 617-779 | Brighton | VERIZON NEW ENGLAND INC. |
| 617-780 | Boston | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA |
| 617-782 | Brighton | VERIZON NEW ENGLAND INC. |
| 617-783 | Brighton | VERIZON NEW ENGLAND INC. |
| 617-784 | Boston | NEW CINGULAR WIRELESS PCS, LLC - DC |
FAQ
Where is 617-781 located?
The prefix is assigned to the Dorchester rate center in MA, area code 617. It is part of the Boston-Cambridge-Newton, MA-NH Metropolitan Statistical Area.
Which company owns 617-781 numbers?
COMMIO, 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 617-781 safe to answer?
The prefix itself says nothing about the caller. Legitimate Dorchester businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.