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.

Denver, CO

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
720-626 4 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-626 5 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-626 6 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-626 7 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-626 8 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-626 9 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-627 A NGLNCOMADS0  9636 QWEST CORPORATION 656      
720-627 0 NGLNCOMADS0  9636 QWEST CORPORATION 656      
720-627 1 NGLNCOMADS0  9636 QWEST CORPORATION 656      
720-627 2 NGLNCOMADS0  9636 QWEST CORPORATION 656      
720-627 3 NGLNCOMADS0  9636 QWEST CORPORATION 656      
720-627 4 NGLNCOMADS0  9636 QWEST CORPORATION 656      
720-627 5 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-627 6 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-627 7 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-627 8 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-627 9 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-628 A DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-629 A DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-630 A DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-630 0 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-630 1 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-630 2 DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
720-630 3 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-630 4 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-630 5 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-630 6 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-630 7 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-630 8 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-630 9 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-631 A DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-631 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-632 A FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 0 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 1 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 2 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 3 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 4 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 5 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 6 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 7 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 8 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-632 9 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-633 A DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-633 0 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-633 1 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-633 2 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-633 3 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-633 4 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-633 5 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-633 6 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-633 7 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-633 8 DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
720-633 9 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-634 A DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-634 0 DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
720-634 1 DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
720-634 2 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-634 3 DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-634 4 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-634 5 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-634 6 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-634 7 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-634 8 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-634 9 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-635 A DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-636 A AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-636 0 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-636 1 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-636 2 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-636 3 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-636 4 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-636 5 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-636 6 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-636 7 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-636 8 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-636 9 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-637 A DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 0 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 1 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 2 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 3 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 4 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 5 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 6 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 7 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 8 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-637 9 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-638 A DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 0 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 1 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.