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.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-292 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-428 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-451 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-469 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-478 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-481 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-741 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-921 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-402 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-620 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-232 A Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-250 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-256 A Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-272 A Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-273 A Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-276 A Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-278 A Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-281 A Washington Zone 6 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-284 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-287 A Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-288 A Washington Zone 12 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-289 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-291 A Washington Zone 14 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-296 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-337 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-348 A Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-364 A Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-479 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-755 A Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-778 A Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 A Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-324 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-325 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-362 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-375 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-386 A Washington Zone 19 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-387 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-392 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-401 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-414 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-472 A Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-487 A Arcola VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-537 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-539 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-551 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-557 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-558 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-581 A Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-665 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-858 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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