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.

Philipsburg, SM

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
721-520 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-521 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-522 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-523 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-524 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-525 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-526 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-527 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-528 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-529 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-542 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-543 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-544 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-545 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-546 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-547 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-548 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-549 A SWCHSFUNKNO  637G ST. MAARTEN TELEPHONE COMPANY, NV 830      
721-550 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-553 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-554 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-556 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-557 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-559 A SWCHSFUNKNO  639G TELCELL, NV 830      
721-580 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-581 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-584 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-585 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-586 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-587 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-588 A SWCHSFUNKNO  636G RADCOM CORPORATION, NV DBA UTS 830      
721-590 A SWCHSFUNKNO  635G ANTELECOM, NV DBA UTS 830      
721-595 A SWCHSFUNKNO  638G ST. MAARTEN INTERNATILNAL TELECOM SVC DBA SMITCOMS 830      
721-596 A SWCHSFUNKNO  638G ST. MAARTEN INTERNATILNAL TELECOM SVC DBA SMITCOMS 830      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.