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: 303 [Rate centres in NPA 303] [Dial plan for NPA 303]

NXX: 569

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-569 A Georgetown CO GRTWCOMARS1  9636 QWEST CORPORATION 656      
303-569 0 Georgetown CO GRTWCOMARS1  9636 QWEST CORPORATION 656      
303-569 1 Georgetown CO GRTWCOMARS1  9636 QWEST CORPORATION 656      
303-569 2 Georgetown CO GRTWCOMARS1  9636 QWEST CORPORATION 656      
303-569 3 Georgetown CO GRTWCOMARS1  9636 QWEST CORPORATION 656      
303-569 4 Georgetown CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-569 5 Georgetown CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
303-569 6 Georgetown CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-569 7 Georgetown CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
303-569 8 Georgetown CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-569 9 Georgetown CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      

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.