Baltimore, Maryland

Estimated Number of Assigned Phone Numbers in Baltimore, Maryland

4,065,000

In Baltimore, Maryland, wireless numbers account for 54.1% of assigned numbers, above the statewide average of 37.2%. Baltimore's wireline and VoIP share is 10.5 percentage points lower than the statewide average. Compared with the state overall, Baltimore has a more concentrated wireless assignment mix. Baltimore is served by 6 area codes, more than the typical Maryland locality, because it sits in an overlay area where multiple area codes share the same geographic region.

Area Codes Used by Baltimore, Maryland

Estimated Service-Type Mix of Assigned Phone Numbers in Baltimore, Maryland

Total assigned 4,065,000
Wireless
2,200,000 assigned numbers
54.12%
Wireline and VoIP
1,678,000 assigned numbers
41.28%
Other / Unclassified
187,000 assigned numbers
4.60%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Baltimore, Maryland

Estimated assigned wireless phone numbers: 2,200,000

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

T-Mobile 1,095,000 (49.77%)
Verizon Wireless 576,000 (26.18%)
AT&T Wireless 528,000 (24.00%)
EVOLVE CELLULAR, INC. 1,000 (0.05%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Baltimore, Maryland

Estimated assigned wireline and VoIP phone numbers: 1,678,000

VERIZON MARYLAND, INC. 893,000 (53.22%)
Onvoy 147,000 (8.76%)
PAETEC ITEL, LLC 141,000 (8.40%)
Lumen 119,000 (7.09%)
Bandwidth 93,000 (5.54%)
Comcast Business 82,000 (4.89%)
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 47,000 (2.80%)
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 38,000 (2.26%)
Spectrum 27,000 (1.61%)
NUSO 24,000 (1.43%)
Peerless Network 20,000 (1.19%)
YMAX COMMUNICATIONS CORP. - MD 18,000 (1.07%)

Other / Unclassified Assigned Numbering in Baltimore, Maryland

Estimated assigned other or unclassified phone numbers: 187,000

SPOK, INC. 60,000 (32.09%)
CORE COMMUNICATIONS, INC.- MD 56,000 (29.95%)
TELEPORT COMMUNICATIONS AMERICA, LLC - MD 47,000 (25.13%)
IP HORIZON LLC 8,000 (4.28%)
HD CARRIER LLC 3,000 (1.60%)
INTRADO COMMUNICATIONS, LLC 3,000 (1.60%)
VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 3,000 (1.60%)
AIRESPRING, INC. 1,000 (0.53%)
ATLANTECH ONLINE, INC. - MD 1,000 (0.53%)
BARR TELL USA, INC. 1,000 (0.53%)
CALLWORKS CORPORATION 1,000 (0.53%)
FIVE9, INC. 1,000 (0.53%)

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 Baltimore, Maryland, 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.

Postal locality matching uses GeoNames postal code files. © GeoNames.