Dorchester, Massachusetts Area Codes & Phone Number Distribution

Estimated Number of Assigned Phone Numbers in Dorchester, Massachusetts

297,000

In Dorchester, Massachusetts, wireless numbers account for 15.2% of assigned numbers, below the statewide average of 34.7%. Dorchester's wireline and VoIP share is 14.2 percentage points higher than the statewide average. Compared with the state overall, Dorchester has a more concentrated wireline and VoIP assignment mix. Dorchester is served by 2 area codes in an overlay area, meaning multiple area codes cover the same geographic region.

Area Codes Used by Dorchester, Massachusetts

617 857

Estimated Service-Type Mix of Assigned Phone Numbers in Dorchester, Massachusetts

Total assigned 297,000

Wireline and VoIP

218,000 assigned numbers

73.40%

Wireless

45,000 assigned numbers

15.15%

Other / Unclassified

34,000 assigned numbers

11.45%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Dorchester, Massachusetts

Estimated assigned wireless phone numbers: 45,000

Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.

T-Mobile 30,000 (66.67%)

AT&T Wireless 15,000 (33.33%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Dorchester, Massachusetts

Estimated assigned wireline and VoIP phone numbers: 218,000

VERIZON NEW ENGLAND INC. 81,000 (37.16%)

Onvoy 49,000 (22.48%)

Bandwidth 16,000 (7.34%)

PAETEC ITEL, LLC 16,000 (7.34%)

Comcast Business 13,000 (5.96%)

Lumen 12,000 (5.50%)

Spectrum 9,000 (4.13%)

Commio 8,000 (3.67%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 5,000 (2.29%)

TERRA NOVA TELECOM INC. 5,000 (2.29%)

Peerless Network 3,000 (1.38%)

Telnyx 1,000 (0.46%)

Other / Unclassified Assigned Numbering in Dorchester, Massachusetts

Estimated assigned other or unclassified phone numbers: 34,000

HD CARRIER LLC 14,000 (41.18%)

NORFOLK COUNTY INTERNET, INC. 10,000 (29.41%)

TC SYSTEMS, INC. 3,000 (8.82%)

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 3,000 (8.82%)

IP HORIZON LLC 2,000 (5.88%)

FRACTEL, LLC 1,000 (2.94%)

TON80 COMMUNICATIONS, LLC 1,000 (2.94%)

How These Figures Were Built

These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with Dorchester, Massachusetts, not live customer counts.

Some providers may have assigned phone numbers tied to this locality even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.

They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.