National Phone Number Registry NPNR

Area Code 301 Location

Area code 301 is currently assigned for use in Maryland since Jan 01, 1947. View all phone prefixes used in area code 301 or other area codes in Maryland.

(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.
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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