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: 736H PACOPTIC NETWORKS, LLC - MA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
774-329 8 Worcester MA WRCSMANKDS2  128   2016-03-31   
774-556 A Marlboro MA MRBOMALBDS0  128      
774-556 0 Marlboro MA MRBOMALBDS0  128   2016-04-11   
774-556 8 Marlboro MA MRBOMALBDS0  128   2016-04-11   
774-778 A Worcester MA WRCSMANKDS2  128      
774-778 0 Worcester MA WRCSMANKDS2  128   2016-04-11   

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

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