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.

OCN: 514B NORTH ROCK COMMUNICATIONS LTD.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
441-540 A Hamilton BM SWCHBMUNKNO  830      
441-541 A Hamilton BM SWCHBMUNKNO  830      
441-542 A Hamilton BM SWCHBMUNKNO  830      
441-543 A Hamilton BM SWCHBMUNKNO  830      
441-544 A Hamilton BM SWCHBMUNKNO  830      
441-545 A Hamilton BM SWCHBMUNKNO  830      
441-546 A Hamilton BM SWCHBMUNKNO  830      
441-547 A Hamilton BM SWCHBMUNKNO  830      
441-548 A Hamilton BM SWCHBMUNKNO  830      
441-549 A Hamilton BM SWCHBMUNKNO  830      
441-560 A Hamilton BM SWCHBMUNKNO  830      
441-589 A Hamilton BM SWCHBMUNKNO  830      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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