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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
213-271 A Los Angeles: DA 01 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
213-330 A Los Angeles: DA 01 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
213-337 A Los Angeles: DA 01 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
213-457 A Los Angeles: DA 01 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
213-477 A Los Angeles: DA 07 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
213-531 A Los Angeles: DA 10 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
213-640 A Los Angeles: DA 10 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-331 A Los Angeles: DA 02 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-336 A Los Angeles: DA 09 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-338 A Los Angeles: DA 02 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-404 A Los Angeles: DA 03 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-405 A Los Angeles: DA 04 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-406 A Los Angeles: DA 05 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-474 A Los Angeles: DA 03 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-475 A Los Angeles: DA 05 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-476 A Los Angeles: DA 06 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-490 A Montebello CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-513 A Los Angeles: DA 06 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-524 A Los Angeles: DA 08 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-527 A Los Angeles: DA 09 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-529 A Los Angeles: DA 11 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-601 A Los Angeles: DA 12 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-602 A Los Angeles: DA 13 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-603 A Los Angeles: DA 14 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-641 A Los Angeles: DA 11 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-642 A Los Angeles: DA 12 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-801 A Los Angeles: DA 13 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-802 A Los Angeles: DA 14 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
323-803 A Montebello CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-250 A Azusa-Glendora CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-251 A Covina-Baldwin Park CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-263 A Monrovia CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-264 A Sierra Madre CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-532 A El Monte CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-534 A El Monte CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-537 A Alhambra CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-538 A Arcadia CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-639 A Pasadena: Pasadena DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-660 A Pasadena: Pasadena DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
626-923 A La Puente CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
657-205 A Santa Ana CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730   2010-06-20   
714-230 A Westminster CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
714-481 A Santa Ana CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
714-591 A Garden Grove CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
714-660 A Yorba Linda CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
714-676 A Buena Park CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
714-696 A Yorba Linda CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
714-763 A Cypress CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
714-782 A Anaheim CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
714-783 A Anaheim CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      

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Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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