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: 585 [Rate centres in NPA 585] [Dial plan for NPA 585]

NXX: 538

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
585-538 A Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-538 0 Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-538 1 Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-538 2 Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-538 3 Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-538 4 Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-538 5 Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-538 6 Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      
585-538 7 Caledonia NY   829J PAETEC ITEL, LLC 974   2000-08-08   
585-538 8 Caledonia NY GATSNYAODS0  8473 LEVEL 3 TELECOM OF NEW YORK, LP - NY 974   2000-05-01   
585-538 9 Caledonia NY CLDNNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER, INC. 974      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.