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: 730 [Rate centres in NPA 730] [Dial plan for NPA 730]

NXX: 255

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
730-255 A Collinsville IL NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-09-26   
730-255 0 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520   2024-09-27   
730-255 1 Collinsville IL STLTMOBOAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 520   2024-09-27   
730-255 2 Collinsville IL NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-12-11   
730-255 3 Collinsville IL STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-04   
730-255 4 Collinsville IL NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-12-18   
730-255 5 Collinsville IL NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-12-18   
730-255 6 Collinsville IL NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-11-17   
730-255 7 Collinsville IL NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-11-17   
730-255 8 Collinsville IL COVLILCQXIX  984E BANDWIDTH.COM CLEC, LLC - IL 520   2024-11-11   
730-255 9 Collinsville IL NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-09-26   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.