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.

NPA: 405 [Rate centres in NPA 405] [Dial plan for NPA 405]

NXX: 604

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-604 A Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-604 0 Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-604 1 Oklahoma City OK OKCYOKMPAMD  5813 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 536   2004-09-16   
405-604 2 Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-604 3 Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-604 4 Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-604 5 Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-604 6 Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-604 7 Oklahoma City OK OKCYOKSX4MD  6529 T-MOBILE USA, INC. 536   2004-09-18   
405-604 8 Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-604 9 Oklahoma City OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.