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

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-200 A Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-201 A Washington Zone 10 MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-202 A Washington Zone 2 MD BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-203 A Washington Zone 6 MD FTWSMDCPRP0  9212 VERIZON MARYLAND, INC. 236      
301-204 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-205 A Washington Zone 14 (Baltimore LATA) MD MAYOMDMYRS1  9212 VERIZON MARYLAND, INC. 238      
301-206 A Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-207 A Washington Zone 13 MD SLSPMDSSX6X  6630 USA MOBILITY WIRELESS, INC. 236      
301-208 A Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-209 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-210 A Laurel MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
301-212 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-213 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-214 A Washington Zone 2 MD BTHSMDWWDS0  9212 VERIZON MARYLAND, INC. 236      
301-215 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-216 A Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-217 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-218 A Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-219 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-220 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-221 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-222 A Washington Zone 2 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
301-223 A Williamsport MD WLPTMDWPRS2  9212 VERIZON MARYLAND, INC. 240      
301-224 A Washington Zone 2 MD SLSPMDSSX6X  6630 USA MOBILITY WIRELESS, INC. 236      
301-225 A Washington Zone 14 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-226 A Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-227 A Washington Zone 2 MD BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-228 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-229 A Washington Zone 2 MD BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-230 A Washington Zone 11 MD RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-231 A Washington Zone 11 MD RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-232 A Ashton MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-233 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-234 A Washington Zone 16 MD ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-235 A Washington Zone 16 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-236 A Washington Zone 12 MD SLSPMDCVDS0  9212 VERIZON MARYLAND, INC. 236      
301-237 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-238 A Washington Zone 16 MD TMHLMDTHDS0  9212 VERIZON MARYLAND, INC. 236      
301-239 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-240 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-241 A Highfield MD HGFLMDHFRS0  9212 VERIZON MARYLAND, INC. 240      
301-242 A Brandywine MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-243 A Washington Zone 2 MD BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-244 A Washington Zone 3 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
301-245 A Bittinger MD BTNRMDBRRS1  9212 VERIZON MARYLAND, INC. 240      
301-246 A Nanjemoy MD NJMYMDNJRS0  9212 VERIZON MARYLAND, INC. 236      
301-247 A Leonardtown MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-248 A Washington Zone 6 MD ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-249 A Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-250 A Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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