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: 7341 XO COMMUNICATIONS SERVICES INC - PA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
610-523 2 Philadelphia Suburban Zone 25 PA   228   2004-08-29   
610-523 3 Philadelphia Suburban Zone 25 PA   228   2004-08-29   
610-523 4 Philadelphia Suburban Zone 25 PA   228   2004-08-29   
610-523 5 Philadelphia Suburban Zone 25 PA   228   2004-08-29   
610-523 7 Philadelphia Suburban Zone 25 PA   228   2004-08-29   
610-535 2 Philadelphia Suburban Zone 26 PA   228   2004-08-29   
610-535 3 Philadelphia Suburban Zone 26 PA   228   2004-08-29   
610-535 7 Philadelphia Suburban Zone 26 PA   228   2004-08-29   
610-535 8 Philadelphia Suburban Zone 26 PA   228   2004-08-29   
610-535 9 Philadelphia Suburban Zone 26 PA   228   2004-08-29   
610-537 3 Philadelphia Suburban Zone 14 PA   228   2006-01-05   
610-537 5 Philadelphia Suburban Zone 14 PA   228   2006-01-05   
610-537 6 Philadelphia Suburban Zone 14 PA   228   2006-01-05   
610-541 1 Philadelphia Suburban Zone 13 PA   228      
610-545 A Philadelphia Suburban Zone 10 PA PHLAPA03DS0  228      
610-545 0 Philadelphia Suburban Zone 10 PA   228   2004-08-27   
610-545 1 Philadelphia Suburban Zone 10 PA   228   2004-08-27   
610-545 2 Philadelphia Suburban Zone 10 PA   228   2004-08-27   
610-545 4 Philadelphia Suburban Zone 10 PA   228   2004-08-27   
610-545 5 Philadelphia Suburban Zone 10 PA   228   2004-08-27   
610-546 1 Philadelphia Suburban Zone 11 PA   228   2004-08-27   
610-546 3 Philadelphia Suburban Zone 11 PA   228   2004-08-27   
610-546 5 Philadelphia Suburban Zone 11 PA   228   2004-08-27   
610-546 6 Philadelphia Suburban Zone 11 PA   228   2004-08-27   
610-546 8 Philadelphia Suburban Zone 11 PA   228   2004-10-29   
610-549 2 Philadelphia Suburban Zone 13 PA   228   2004-08-27   
610-549 5 Philadelphia Suburban Zone 13 PA   228   2004-08-27   
610-549 6 Philadelphia Suburban Zone 13 PA   228   2004-08-27   
610-549 7 Philadelphia Suburban Zone 13 PA   228   2004-08-27   
610-552 A Philadelphia Suburban Zone 24 PA PHLAPA03DS0  228      
610-552 0 Philadelphia Suburban Zone 24 PA   228      
610-552 1 Philadelphia Suburban Zone 24 PA   228      
610-552 3 Philadelphia Suburban Zone 24 PA   228   2008-03-31   
610-552 5 Philadelphia Suburban Zone 24 PA   228   2008-03-31   
610-552 7 Philadelphia Suburban Zone 24 PA   228   2004-09-30   
610-552 9 Philadelphia Suburban Zone 24 PA   228      
610-557 6 Philadelphia Suburban Zone 22 PA   228   2013-08-26   
610-557 7 Philadelphia Suburban Zone 22 PA   228   2013-08-26   
610-560 A Philadelphia Suburban Zone 28 PA PHLAPA03DS0  228      
610-560 0 Philadelphia Suburban Zone 28 PA   228      
610-560 1 Philadelphia Suburban Zone 28 PA   228      
610-560 4 Philadelphia Suburban Zone 28 PA   228      
610-560 8 Philadelphia Suburban Zone 28 PA   228      
610-561 3 Exton PA   228   2004-08-29   
610-561 4 Exton PA   228   2004-08-29   
610-561 5 Exton PA   228   2004-08-29   
610-561 7 Exton PA   228   2004-11-02   
610-561 8 Exton PA   228   2004-11-02   
610-568 1 Reading PA   228   2002-06-23   
610-568 3 Reading PA   228   2002-03-19   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 >>

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.