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.

NPA: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

<< 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 92 93 94 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-528 4 Cambridge MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-528 5 Cambridge MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-528 6 Cambridge MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-528 7 Cambridge MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-528 8 Cambridge MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2009-11-11   
617-528 9 Cambridge MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-03-04   
617-529 A Saugus MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
617-530 A Boston MA BSTNMACODS2  7135 TC SYSTEMS, INC. 128      
617-530 0 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2004-03-02   
617-530 1 Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2014-08-22   
617-530 2 Boston MA BSTNMACODS2  7135 TC SYSTEMS, INC. 128      
617-530 4 Boston MA BSTNMACODS2  7135 TC SYSTEMS, INC. 128      
617-530 5 Boston MA BSTNMACODS2  7135 TC SYSTEMS, INC. 128      
617-530 6 Boston MA BSTNMACODS2  7135 TC SYSTEMS, INC. 128      
617-530 7 Boston MA BSTNMACODS2  7135 TC SYSTEMS, INC. 128      
617-530 8 Boston MA BSTNMACODS2  7135 TC SYSTEMS, INC. 128      
617-530 9 Boston MA BSTNMACODS2  7135 TC SYSTEMS, INC. 128      
617-531 A Boston MA CMBRMAORDS0  7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 128      
617-532 A Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
617-533 A Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-533 0 Dorchester MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2020-08-26   
617-533 1 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-533 2 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-533 3 Dorchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-07-08   
617-533 4 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-533 5 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-533 6 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-533 7 Dorchester MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2006-11-14   
617-533 8 Dorchester MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2006-11-14   
617-533 9 Dorchester MA CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128   2012-01-20   
617-534 A Boston MA BSTNMABEDS9  9102 VERIZON NEW ENGLAND INC. 128      
617-535 A Boston MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
617-536 A Boston MA BSTNMABEDS2  9102 VERIZON NEW ENGLAND INC. 128      
617-537 A Quincy MA QNCYMAHADS1  9102 VERIZON NEW ENGLAND INC. 128      
617-538 A Waltham MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
617-539 A Winthrop MA WNTHMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
617-539 0 Winthrop MA WNTHMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
617-539 1 Winthrop MA WNTHMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
617-539 2 Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-03-03   
617-539 3 Winthrop MA WNTHMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
617-539 4 Winthrop MA   145J TERRA NOVA TELECOM INC. 128   2022-05-05   
617-539 5 Winthrop MA   145J TERRA NOVA TELECOM INC. 128   2024-02-10   
617-539 6 Winthrop MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-01-02   
617-539 7 Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-03-03   
617-539 8 Winthrop MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-09-01   
617-539 9 Winthrop MA WNTHMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
617-540 A Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-540 0 Cambridge MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
617-540 1 Cambridge MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2020-07-06   
617-540 2 Cambridge MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2020-07-06   

<< 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 92 93 94 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.