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(301)
Enter 7-digit phone number for area code 301 or the complete 10-digit phone number

Phone Prefixes for Area Code 301

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Area code Location Company / Service Provider
301-200 Indian Head, MD BANDWIDTH.COM CLEC, LLC - MD
301-202 Washington, MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-203 Washington, MD VERIZON MARYLAND, INC.
301-204 Washington, MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-205 Washington, MD VERIZON MARYLAND, INC.
301-206 WSNG236Z13, MD VERIZON MARYLAND, INC.
301-207 WSNG236Z13, MD USA MOBILITY WIRELESS, INC.
301-208 Gaithersburg, MD VERIZON MARYLAND, INC.
301-209 WSHNGTNZN4, MD VERIZON MARYLAND, INC.
301-210 LAUREL, MD VERIZON MARYLAND, INC.
301-212 Washington, MD VERIZON MARYLAND, INC.
301-213 Washington, MD SPRINT SPECTRUM L.P.
301-214 Washington, MD VERIZON MARYLAND, INC.
301-215 Washington, MD VERIZON MARYLAND, INC.
301-216 Gaithersburg, MD VERIZON MARYLAND, INC.
301-217 Washington, MD VERIZON MARYLAND, INC.
301-218 Washington, MD VERIZON MARYLAND, INC.
301-219 Washington, MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-220 WSNG236Z13, MD VERIZON MARYLAND, INC.
301-221 Washington, MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-222 Washington, MD CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD
301-223 Williamsport, MD VERIZON MARYLAND, INC.
301-224 Washington, MD USA MOBILITY WIRELESS, INC.
301-225 Washington, MD TELEPORT COMMUNICATIONS AMERICA, LLC - DC
301-226 WSHNGTNZN4, MD VERIZON MARYLAND, INC.
301-227 Washington, MD VERIZON MARYLAND, INC.
301-228 FREDERICK, MD VERIZON MARYLAND, INC.
301-229 Washington, MD VERIZON MARYLAND, INC.
301-230 Washington County, MD VERIZON MARYLAND, INC.
301-231 Washington County, MD VERIZON MARYLAND, INC.
301-232 Ashton, MD MCI WORLDCOM COMMUNICATIONS, INC. - MD
301-233 Washington, MD CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
301-234 Washington, MD VERIZON MARYLAND, INC.
301-235 Washington, MD MCIMETRO ACCESS TRANSMISSION SERVICES LLC
301-236 Washington, MD VERIZON MARYLAND, INC.
301-237 Washington, MD SPRINT SPECTRUM L.P.
301-238 Washington, MD VERIZON MARYLAND, INC.
301-239 WSHNGTNZN4, MD VERIZON MARYLAND, INC.
301-240 Washington, MD VERIZON MARYLAND, INC.
301-241 HIGHFIELD, MD VERIZON MARYLAND, INC.
301-242 BRANDYWINE, MD MCIMETRO ACCESS TRANSMISSION SERVICES LLC
301-243 Washington, MD VERIZON MARYLAND, INC.
301-244 Washington, MD TELCOVE OPERATIONS, INC. - MD
301-245 BITTINGER, MD VERIZON MARYLAND, INC.
301-246 NANJEMOY, MD VERIZON MARYLAND, INC.
301-247 Leonardtown, MD NEW CINGULAR WIRELESS PCS, LLC - DC
301-248 Washington, MD VERIZON MARYLAND, INC.
301-249 Washington, MD VERIZON MARYLAND, INC.
301-250 Gaithersburg, MD MCI WORLDCOM COMMUNICATIONS, INC. - MD
301-251 Washington, MD VERIZON MARYLAND, INC.
New numbers being added to 301 area code
Effective: 07/17/2017
301-936 in HAGERSTOWN, MD
TELNYX LLC
301 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: January 01, 1947
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): IL96/06-009
Overlay code: Yes
Overlay complex: 240/227/301
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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