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: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 631

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-631 A Collinsville IL COVLILCQXOX  495J STRATUS NETWORKS 520      
618-631 0 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520      
618-631 1 Collinsville IL COVLILCQXOX  495J STRATUS NETWORKS 520      
618-631 2 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520      
618-631 3 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520      
618-631 4 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520      
618-631 5 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520      
618-631 6 Collinsville IL COVLILCLPMD  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 520      
618-631 7 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520      
618-631 8 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520      
618-631 9 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.