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: 518 [Rate centres in NPA 518] [Dial plan for NPA 518]

NXX: 621

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
518-621 A Albany NY ALBYNYSSPS1  9104 VERIZON NEW YORK, INC. 134      
518-621 0 Albany NY ALBYNYVP2MD  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2010-06-20   
518-621 1 Albany NY   793K TWC IP ENABLED SERVICES, LLC 134   2011-01-14   
518-621 2 Albany NY ALBYNYVP2MD  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2010-12-13   
518-621 3 Albany NY ALBYNYVP2MD  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2010-12-13   
518-621 4 Albany NY ALBYNYVP2MD  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2010-12-13   
518-621 5 Albany NY   829J PAETEC ITEL, LLC 134   2009-12-21   
518-621 6 Albany NY LTHMNYNLW02  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 134   2010-11-21   
518-621 7 Albany NY   793K TWC IP ENABLED SERVICES, LLC 134   2010-10-30   
518-621 8 Albany NY LTHMNYNLW02  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 134   2010-11-21   
518-621 9 Albany NY ALBYNYSSPS1  9104 VERIZON NEW YORK, INC. 134   2009-06-18   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.