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.

OCN: 9748 AMERICAN MESSAGING SERVICES, LLC

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
501-334 A Searcy AR LTRKARFRXKY  528      
501-360 A Little Rock AR LTRKARFRXKY  528      
501-390 A Little Rock AR LTRKARFRXKY  528      
501-395 A Little Rock AR LTRKARFRXHZ  528      
501-405 A Little Rock AR LTRKARFRXHZ  528      
501-465 A Conway AR LTRKARFRXKY  528      
501-543 A Benton AR LTRKARFRXKY  528      
501-763 A Hot Springs AR LTRKARFRXKY  528      
501-828 A Little Rock AR LTRKARFRXKY  528      
502-332 A Louisville KY LSVLKYWEXNX  462      
502-336 A Louisville KY LSVLKYWEXNX  462      
502-342 A Louisville KY LSVLKYWEXNX  462      
502-344 A Louisville KY LSVLKYWEXNX  462      
502-346 A Louisville KY LSVLKYWEXNX  462      
502-372 A Louisville KY LSVLKYWEXNX  462      
502-421 A Louisville KY LSVLKYWEXNX  462      
502-621 A Louisville KY LSVLKYWEXNX  462      
508-307 A Taunton MA WOBNMADW2MD  128      
508-327 A Auburn MA BSTNMABLOMD  128      
508-537 A Auburn MA BSTNMABLOMD  128      
508-806 A Auburn MA BSTNMABLOMD  128      
509-880 A Spokane WA YAKMWABL0MD  676      
509-889 A Spokane WA YAKMWABL0MD  676      
510-349 A Richmond CA SNFCCA21XUY  722      
510-718 A Oakland: Main-Piedmont DA CA HYWRCAST1MD  722      
510-968 A Fremont-Newark: Main DA CA SNFCCA21XUY  722      
512-204 A Austin TX AUSTTXGRX8Y  558      
512-208 A Austin TX AUSTTXGRX8Y  558      
512-209 A Austin TX AUSTTXGRX8Y  558      
513-219 A Cincinnati OH CNCNOHAF2MD  922      
513-308 A Cincinnati OH CNCNOHAF2MD  922      
513-329 A Cincinnati OH CNCNOHAF2MD  922   2024-03-03   
513-355 A Middletown OH DYTNOH22X3Y  328      
513-414 A Cincinnati OH CNCNOHAF2MD  922      
513-730 A Cincinnati OH CNCNOHAF2MD  922      
513-819 A Cincinnati OH CNCNOHAF2MD  922      
516-651 A Nassau Zone 6 NY SCDLNYAN2MD  132      
517-226 A Lansing MI LNNGMIMNXJY  346      
517-251 A Lansing MI LNNGMIMNXJY  346      
517-255 A Lansing MI LNNGMIMNXJY  346      
517-360 A Lansing MI LNNGMIMNXJY  346      
517-390 A Jackson MI LNNGMIMNXJY  346      
517-407 A Jonesville MI LNNGMIMNXJY  346      
517-464 A Jackson MI LNNGMIMNXJY  346      
517-794 A Lansing MI LNNGMIMNXJY  346      
517-804 A Fowlerville MI LNNGMIMNXJY  346      
517-973 A Charlotte MI LNNGMIMNXJY  346      
518-349 A Albany NY ALBYNYSSXOY  134      
518-484 A Albany NY ALBYNYSSXOY  134      
518-710 A Hudson NY ALBYNYSSXOY  134      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.