Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

Block: A

<< 1 2 3 4 5 6 7 8 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-402 A Washington Zone 2 MD BTHSMDRPDS0  9212 VERIZON MARYLAND, INC. 236      
301-403 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-404 A Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-405 A Washington Zone 4 MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
301-406 A Washington Zone 2 MD SLSPMDSSX6X  6630 USA MOBILITY WIRELESS, INC. 236      
301-407 A Gaithersburg MD PLVLMDPVRS2  9212 VERIZON MARYLAND, INC. 236      
301-408 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-409 A Washington Zone 2 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      
301-410 A Washington Zone 6 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      
301-412 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-413 A Washington Zone 11 MD RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-414 A Damascus MD DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-415 A Washington Zone 3 MD SLSPMDSSDSS  9212 VERIZON MARYLAND, INC. 236      
301-416 A Myersville MD SMBGMDSMRS0  9212 VERIZON MARYLAND, INC. 240      
301-417 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-418 A Frederick MD FRDRMDFRDS0  9212 VERIZON MARYLAND, INC. 240      
301-419 A Washington Zone 13 MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
301-420 A Washington Zone 5 MD STLDMDSLDS0  9212 VERIZON MARYLAND, INC. 236      
301-421 A Ashton MD SLSPMDCVDS0  9212 VERIZON MARYLAND, INC. 236      
301-422 A Washington Zone 4 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-423 A Washington Zone 5 MD TMHLMDTHDS0  9212 VERIZON MARYLAND, INC. 236      
301-424 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-425 A Washington Zone 13 MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
301-426 A Washington Zone 13 MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
301-427 A Washington Zone 3 MD SLSPMDSSDS0  9212 VERIZON MARYLAND, INC. 236      
301-428 A Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-429 A Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 A Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-431 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-432 A Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-433 A Washington Zone 5 MD ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-434 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-435 A Washington Zone 2 MD BTHSMDRPDS0  9212 VERIZON MARYLAND, INC. 236      
301-436 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-437 A Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-438 A Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-439 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-440 A Washington Zone 5 MD BTVLMD127MD  5562 METROPCS, INC. 236      
301-441 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-442 A Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-443 A Washington Zone 11 MD RKVLMDMRRS1  9212 VERIZON MARYLAND, INC. 236      
301-444 A Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-445 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-446 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-447 A Emmitsburg MD EMBGMDEMRS0  9212 VERIZON MARYLAND, INC. 240      
301-448 A Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-449 A Washington Zone 5 MD ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-450 A Washington Zone 3 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-451 A Washington Zone 2 MD BTHSMDRPDS0  9212 VERIZON MARYLAND, INC. 236      
301-452 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-453 A Kitzmiller MD KTZMMDKMRS0  9212 VERIZON MARYLAND, INC. 240      
301-454 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-455 A Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-456 A Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-457 A Washington Zone 3 MD SLSPMDSSDSS  9212 VERIZON MARYLAND, INC. 236      
301-458 A Washington Zone 4 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-459 A Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-460 A Washington Zone 11 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-461 A Washington Zone 10 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-462 A Myersville MD   5562 METROPCS, INC. 240      
301-463 A Lonaconing MD LNCNMDLNRS0  9212 VERIZON MARYLAND, INC. 240      
301-464 A Washington Zone 14 MD BOWIMDBODS0  9212 VERIZON MARYLAND, INC. 236      
301-465 A Myersville MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
301-466 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-467 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-468 A Washington Zone 11 MD RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-469 A Washington Zone 2 MD BTHSMDBDDS0  9212 VERIZON MARYLAND, INC. 236      
301-470 A Washington Zone 14 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-471 A Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
301-472 A Mechanicsville MD MCHVMDMCRS1  9212 VERIZON MARYLAND, INC. 236      
301-473 A Frederick MD BRHGMDBHRS1  9212 VERIZON MARYLAND, INC. 240      
301-474 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-475 A Leonardtown MD LNTWMDLTRS0  9212 VERIZON MARYLAND, INC. 236      
301-476 A Ashton MD SLSPMDCVDS0  9212 VERIZON MARYLAND, INC. 236      
301-477 A Washington Zone 13 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-478 A Flintstone MD FLNTMDFSRS0  9212 VERIZON MARYLAND, INC. 240      
301-479 A Washington Zone 13 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-480 A Washington Zone 2 MD BTHSMDRPDS0  9212 VERIZON MARYLAND, INC. 236      
301-481 A Leonardtown MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-482 A Damascus MD DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-483 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-484 A Washington Zone 4 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-485 A Washington Zone 6 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-486 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-487 A Myersville MD MYVLMDMVRS0  9212 VERIZON MARYLAND, INC. 240      
301-488 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-489 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-490 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-491 A Hagerstown MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-492 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-493 A Washington Zone 2 MD BTHSMDWWDS0  9212 VERIZON MARYLAND, INC. 236      
301-494 A Washington Zone 15 (Baltimore LATA) MD PRFRMDPFRS1  9212 VERIZON MARYLAND, INC. 238      
301-495 A Washington Zone 3 MD SLSPMDSSDS0  9212 VERIZON MARYLAND, INC. 236      
301-496 A Washington Zone 2 MD BTHSMDRPDS0  9212 VERIZON MARYLAND, INC. 236      
301-497 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-498 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-499 A Washington Zone 5 MD CPHGMDCADS0  9212 VERIZON MARYLAND, INC. 236      
301-500 A Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-501 A Oakland MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-502 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      

<< 1 2 3 4 5 6 7 8 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.