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(240)
Enter 7-digit phone number for area code 240 or the complete 10-digit phone number

Phone Prefixes for Area Code 240

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Area code location Company / Service Provider
240-200 Washington, MD BANDWIDTH.COM CLEC, LLC - MD
240-201 RIDGE, MD PEERLESS NETWORK OF MARYLAND, LLC
240-203 HAGERSTOWN, MD SPRINT SPECTRUM L.P. - MD
240-204 Washington, MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-205 Washington, MD NEW CINGULAR WIRELESS PCS, LLC - DC
240-206 Washington, MD XO MARYLAND, LLC
240-207 Damascus, MD CAVALIER EAST LLC - MD
240-208 LA PLATA, MD PEERLESS NETWORK OF MARYLAND, LLC
240-209 Indian Head, MD PEERLESS NETWORK OF MARYLAND, LLC
240-210 WALDORF, MD NEW CINGULAR WIRELESS PCS, LLC - DC
240-212 OAKLAND, MD CORE COMMUNICATIONS, INC. - MD
240-213 WALDORF, MD PEERLESS NETWORK OF MARYLAND, LLC
240-214 Mechanicsville, MD PEERLESS NETWORK OF MARYLAND, LLC
240-215 FREDERICK, MD TELCOVE OPERATIONS, INC. - MD
240-216 WALDORF, MD SPRINT SPECTRUM L.P.
240-217 HAGERSTOWN, MD OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
240-218 NANJEMOY, MD PEERLESS NETWORK OF MARYLAND, LLC
240-219 RIDGE, MD PEERLESS NETWORK OF MARYLAND, LLC
240-220 Poolesville, MD PEERLESS NETWORK OF MARYLAND, LLC
240-221 Washington County, MD VERIZON MARYLAND, INC.
240-222 WALDORF, MD CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
240-223 Washington, MD ALLEGIANCE TELECOM, INC. - MD
240-224 Gaithersburg, MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-225 FREDERICK, MD CORE COMMUNICATIONS, INC. - MD
240-228 WSNG236Z13, MD VERIZON MARYLAND, INC.
240-229 WALDORF, MD BROADWING COMMUNICATIONS. LLC - MD
240-230 Hughesville, MD GLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-231 HAGERSTOWN, MD CORE COMMUNICATIONS, INC. - MD
240-232 Washington, MD BROADWING COMMUNICATIONS. LLC - MD
240-233 Tompkinsville, MD TELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-234 Washington, MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
240-235 Washington, MD PAETEC COMMUNICATIONS, INC. - MD
240-236 FREDERICK, MD VERIZON MARYLAND, INC.
240-237 Lexington Park, MD TELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-238 Washington, MD PAETEC COMMUNICATIONS, INC. - MD
240-239 Leonardtown, MD CORE COMMUNICATIONS, INC. - MD
240-241 WSNG236Z13, MD STARPOWER COMMUNICATIONS, LLC - MD
240-242 Washington County, MD STARPOWER COMMUNICATIONS, LLC - MD
240-243 Gaithersburg, MD ALLEGIANCE TELECOM, INC. - MD
240-244 Washington, MD STARPOWER COMMUNICATIONS, LLC - MD
240-245 Washington, MD STARPOWER COMMUNICATIONS, LLC - MD
240-246 Gaithersburg, MD STARPOWER COMMUNICATIONS, LLC - MD
240-247 Washington, MD ALLEGIANCE TELECOM, INC. - MD
240-248 RIDGE, MD PEERLESS NETWORK OF MARYLAND, LLC
240-249 Mechanicsville, MD TELEPORT COMMUNICATIONS AMERICA, LLC - DC
240-250 BRANDYWINE, MD PEERLESS NETWORK OF MARYLAND, LLC
240-251 HIGHFIELD, MD CORE COMMUNICATIONS, INC. - MD
240-252 Gaithersburg, MD LEVEL 3 COMMUNICATIONS, LLC - MD
240-253 Washington, MD GLOBAL CROSSING LOCAL SERVICES, INC.-MD
240-254 Hughesville, MD TELEPORT COMMUNICATIONS AMERICA, LLC - DC
New numbers being added to 240 area code
Effective: 06/17/2017
240-267 in HAGERSTOWN, MD
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
Effective: 08/10/2017
240-484 in LAUREL, MD
NEW CINGULAR WIRELESS PCS, LLC - DC
Effective: 08/11/2017
240-867 in WASHINGTON, MD
COMMIO, LLC
240 Area Code Information
Type of code: General Purpose Code
location: MD - US
Time zone: E
Assigned for use: Yes
Code in service: Yes
Service date: June 01, 1997
In jeopardy: No
Relief in progress: No
NPA Relief status:
Code assignable: Yes
Geographic or
non-geographic:
G
Reserved for future use: No
Planning letter(s): IL96/07-004 IL96/06-009
Overlay code: Yes
Overlay complex: 227/240/301
Dialing plan Standard Permissive
Home local calls: 10D 1+10D
Foreign local calls: 10D 1+10D
Home toll calls: 1+10D NA
Foreign toll calls: 1+10D -

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