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
720-513 1 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-513 2 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-513 3 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-513 4 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-513 5 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-513 6 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-513 7 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-513 8 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-513 9 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-514 A AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-514 0 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-514 1 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-514 2 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-514 3 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-514 4 AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-514 5 AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-514 6 AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-514 7 AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-514 8 AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-514 9 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 A DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 0 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 1 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 2 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 3 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 4 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 5 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 6 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 7 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 8 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-515 9 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-516 A LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 0 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 1 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 2 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 3 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 4 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 5 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 6 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 7 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 8 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-516 9 LTTNCOHLDS0  9636 QWEST CORPORATION 656      
720-517 A DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 0 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 1 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 2 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 3 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 4 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 5 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 6 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 7 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 8 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-517 9 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-518 A DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
720-518 0 DNVRCOII4MD  5562 METROPCS, INC. 656      
720-518 1 DNVRCOII4MD  5562 METROPCS, INC. 656      
720-518 2 DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
720-518 3 DNVRCOII4MD  5562 METROPCS, INC. 656      
720-518 4 DNVRCOII4MD  5562 METROPCS, INC. 656      
720-518 5 DNVRCOII4MD  5562 METROPCS, INC. 656      
720-518 6 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-518 7 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-518 8 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-518 9 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-519 A AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-519 0 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-519 1 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-519 2 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-519 3 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-519 4 AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-519 5 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-519 6 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-519 7 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-519 8 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-519 9 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-520 A DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656      
720-520 0 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-520 1 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-520 2 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-520 3 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-520 4 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-520 5 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-520 6 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-520 7 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-520 8 DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656      
720-520 9 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-521 A ENWDCOVF0MD  9748 AMERICAN MESSAGING SERVICES, LLC 656      
720-522 A   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-522 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-523 A BITNCOMADS0  9636 QWEST CORPORATION 656      
720-523 0 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 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: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.