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.

Helena, MT

<< 1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-438 0 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-438 1 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-438 2 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-438 3 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-438 4 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-438 5 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-438 6 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-438 7 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-438 8 GRFLMTMAHMD  073H TELNYX LLC 648      
406-438 9 GRFLMTMAHMD  073H TELNYX LLC 648      
406-439 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 0 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 1 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 2 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 3 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 4 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 5 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 6 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 7 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 8 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-439 9 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-440 A HLNAMTHODS1  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-440 0 HLNAMTHODS1  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-440 1 HLNAMTHODS1  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-440 3 HLNAMTHODS1  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-440 4 HLNAMTHODS1  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-440 5   6529 T-MOBILE USA, INC. 648      
406-440 6   6529 T-MOBILE USA, INC. 648      
406-440 8 HLNAMTHODS1  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-440 9 HLNAMTHODS1  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-441 A HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-442 A HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-443 A HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-444 A HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 A HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 1 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 2 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 3 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 4 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 5 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 6 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 7 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 8 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 9 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-449 A HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 A HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 0 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 1 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 2 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 3 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 4 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 5 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 7 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 8 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 9 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-458 A HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 0 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 1 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 3 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 4 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 5 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 6 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 7 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 8 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 9 HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-459 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-461 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-465 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-475 A CNFYMT02RS1  9636 QWEST CORPORATION 648      
406-475 0 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-475 1 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-475 2 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-475 3 CNFYMT02RS1  9636 QWEST CORPORATION 648      
406-475 4 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-475 5 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-475 6   6529 T-MOBILE USA, INC. 648      
406-475 7   6529 T-MOBILE USA, INC. 648      
406-475 9 CNFYMT02RS1  9636 QWEST CORPORATION 648      
406-495 A HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 0 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 1 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 2 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 3 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 5 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 6 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 7 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 8 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 9 HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-502 A   792K CHARTER IP ENABLED SERVICES, LLC 648      
406-502 1   792K CHARTER IP ENABLED SERVICES, LLC 648      
406-502 2   792K CHARTER IP ENABLED SERVICES, LLC 648      
406-502 8 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-513 A   792K CHARTER IP ENABLED SERVICES, LLC 648      
406-513 1   792K CHARTER IP ENABLED SERVICES, LLC 648      
406-513 8   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-513 9   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-558 A MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-558 0   073H TELNYX LLC 648      
406-558 2 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-558 3 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      

<< 1 2 3 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.