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 Switch LATA LIR Eff date Disc date
202-918 A Washington Zone 1 DC   236   2019-08-12   
202-918 1 Washington Zone 1 DC   236   2019-08-12   
205-829 A Birmingham AL   476   2019-08-09   
205-829 1 Birmingham AL   476   2019-08-09   
206-741 A Seattle WA   674   2019-09-20   
206-741 1 Seattle WA   674   2019-09-20   
213-528 A Los Angeles: DA 02 CA   730      
213-528 8 Los Angeles: DA 02 CA   730   2019-08-27   
228-277 A Gulfport MS   484   2019-08-18   
228-277 1 Gulfport MS   484   2019-08-18   
256-210 A Huntsville AL   477   2019-08-09   
256-210 1 Huntsville AL   477   2019-08-09   
270-770 A Bowling Green KY   464   2019-08-18   
270-770 1 Bowling Green KY   464   2019-08-18   
312-584 A Chicago Zone 01-Calumet IL   358   2018-09-28   
312-584 0 Chicago Zone 01-Calumet IL   358   2018-09-28   
313-880 A Detroit Zone 1 MI   340   2019-08-08   
313-880 1 Detroit Zone 1 MI   340   2019-08-08   
318-693 A Shreveport LA   486   2019-08-09   
318-693 1 Shreveport LA   486   2019-08-09   
346-355 A Houston TX   560   2018-09-28   
346-355 0 Houston TX   560   2018-09-28   
346-367 1 Tomball TX   560   2019-02-18   
346-375 0 Sugar Land TX   560   2019-07-12   
346-381 A Houston Suburban TX   560   2019-03-25   
346-381 1 Houston Suburban TX   560   2019-03-25   
346-382 A Spring TX   560   2019-03-25   
346-382 1 Spring TX   560   2019-03-25   
352-565 A Gainesville FL   45402   2019-08-09   
352-565 1 Gainesville FL   45402   2019-08-09   
380-203 A Columbus OH   324      
380-203 0 Columbus OH   324   2019-08-19   
385-308 A Midvale UT   660   2019-08-18   
385-308 1 Midvale UT   660   2019-08-18   
385-401 A Salt Lake City UT   660   2019-08-09   
385-401 1 Salt Lake City UT   660   2019-08-09   
405-768 A Oklahoma City OK   536   2019-08-12   
405-768 1 Oklahoma City OK   536   2019-08-12   
424-431 2 Beverly Hills CA   730   2019-08-04   
424-432 A Avalon CA   730   2019-09-15   
424-432 1 Avalon CA   730   2019-09-15   
435-900 1 St George UT   660   2019-08-04   
445-400 A Philadelphia Zone 2 PA   228      
445-400 2 Philadelphia Zone 2 PA   228   2019-09-10   
469-498 A Dallas TX   552   2018-09-28   
469-498 0 Dallas TX   552   2018-09-28   
469-598 A Frisco TX   552   2019-03-25   
469-598 1 Frisco TX   552   2019-03-25   
469-639 0 Irving TX   552   2019-07-13   
469-649 1 Plano TX   552   2019-07-13   

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

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