Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-204 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-207 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-240 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-292 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-315 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-330 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-351 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-355 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-379 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-380 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-403 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      
202-446 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      
202-459 A Washington Zone 1 DC 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-464 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      
202-827 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      
227-219 A Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-206 A Washington Zone 14 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-223 A Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-243 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-247 A Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-260 A Washington Zone 14 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-268 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-290 A Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-294 A Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-399 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-402 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-404 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-427 A Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-437 A Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-489 A Poolesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-510 A Washington Zone 15 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-523 A La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-538 A Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-553 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 A Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-559 A Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-560 A Washington Zone 12 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-620 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-644 A Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 A Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-652 A Mechanicsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-718 A Lexington Park-Great Mills MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-745 A Damascus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-764 A Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-765 A Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-766 A Washington Zone 6 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-778 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-823 A Brandywine MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-833 A Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-837 A Hughesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-845 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 A Washington Zone 16 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-993 A Indian Head 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      
301-500 A Washington Zone 2 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      
301-822 A Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 A Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-753 A Waterloo (Washington DC LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
540-803 A Stafford VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-266 A Herndon VA 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      
571-326 A Washington Zone 17 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      
571-382 A Washington Zone 17 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      
571-448 A Engleside VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-472 A Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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