Area Codes 860 & 959
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Codes 860 and 959 (Connecticut).

Click on the pictures below for a larger version.

Bristol	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: BRSTCT00DS0 Switch Type: Nokia/Siemens EWSD DE5 Prefixes Served: (860) 314, 582-5, 589, 766   Notes: Source: GSV
Canaan	Listing Updated: May 2016 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: CNANCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 824 Notes:
Canton	Listing Updated: May 2016 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: CNTNCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 693 Notes:
Colchester	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: CLCHCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 537 Notes: Source: GSV
Columbia	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: CLMACT00RS4 Switch Type: Ribbon/Genband/Nortel RSC Prefixes Served: (860) x Notes: Source: GSV
Cornwall	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: CRNWCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 672 Notes: Source: GSV
Coventry	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: CNTYCT00RS1 Switch Type: Ribbon/Genband/Nortel RSC Prefixes Served: (860) 742 Notes: Source: GSV
Danielson	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: DNSNCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 774, 779 Notes: Source: GSV
Deep River	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: DPRVCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 526 Notes: Source: GSV
East Hampton "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: EHTNCT00RS1 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 267, 365   Notes: Source: GSV
East Hampton "Marlborough"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: MRLBCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) x Notes: Source: GSV
Enfield "01 (Main)"	Listing Updated: June 2015 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: ENFDCT01DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 253, 741, 745-6 Notes:
Enfield "02 (Hazard)"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: ENFDCT02DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 272, 749, 763 Notes: Source: GSV
Essex	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: ESSXCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 767 Notes: Source: GSV
Farmington "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: FRTNCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 284, 409, 674, 676-9 Notes: Source: GSV
Farmington "Unionville (Avon)"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: UNVLCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 404, 673, 675 Notes: Some sources list this as "Avon". Source: GSV
Glastonbury	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: GLBYCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 368, 633, 652, 657, 659, 682 Notes: Source: GSV
Haddam "Higganum"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: HGNMCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 345 Notes: Source: GSV
Hartford Photo 2 | Photo 3 | Photo 4	Listing Updated: June 2015 / April 2014 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: HRFRCT03DS0 HRFRCT03DS1 HRFRCT03DS3 Switch Type: DS0: Ribbon/Genband/Nortel DMS-100 DS1: Nokia/Alcatel/Lucent 5ESS DS3: Nokia/Alcatel/Lucent 5ESS Prefixes Served: DS0: (860) 251, 270, 418, 422, 424, 504, 560, 595, 724, 765, 951 DS1: (860) 273, 277, 296, 403, 534, 545, 566, 692, 695, 702, 714, 723, 756-7, 947, 952-3, 956, 972, 986 DS3: (860) 240-1, 244, 246-7, 249, 275, 278, 280, 293, 297, 299, 308, 493, 520, 522, 524-5, 527, 541, 543, 547-9, 722, 725, 727-8, 948, 987 Notes: Photos 3 and 4 were when this was AT&T
Hartford "Bloomfield"	Listing Updated: April 2014 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: BLFDCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 242-3, 286, 726, 768-9 Notes:
Hartford "East Hartford (Brewer)" Photo 2	Listing Updated: June 2014 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: EHRTCT02DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 568-9, 895 Notes:
Hartford "East Hartford (Chapman)"	Listing Updated: June 2014 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: EHRTCT01DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 282, 289-91, 528, 557, 565, 610, 622 Notes:
Hartford "Newington"	Listing Updated: April 2014 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: NWNTCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 353, 594, 660, 665-7, 696, 755, 878, 998 Notes:
Hartford "West Hartford (Main)"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WHFRCT02DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 313, 521, 561 Notes: Source: GSV
Hartford "West Hartford (Prospect)"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WHFRCT01DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 231-3, 236, 371, 523, 570, 586 Notes: Source: GSV
Hartford "Wethersfield"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WTFDCT00DS0 Switch Type: Nokia/Alcatel/Lucnet 5ESS Prefixes Served: (860) 257-8, 513, 529, 563, 571, 721 Notes: Source: GSV
Jewett City	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: JWCYCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 376 Notes: Source: GSV
Kent	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: KENTCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 927 Notes: Source: GSV
Lakeville	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: LKVLCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 435 Notes: Source: GSV
Lebanon	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: LBNNCT00RS2 Switch Type: Ribbon/Genband/Nortel RSC Prefixes Served: (860) 642 Notes: Source: GSV
Litchfield	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: LTFDCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 567 Notes: Source: GSV
Manchester "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: MNCHCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 533, 643, 645-7, 649 Notes: Source: GSV
Manchester "Wapping"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WPNGCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 644, 648 Notes: Source: GSV
Middletown "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: MDTWCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 343-4, 346-7, 358, 636, 638, 685, 704 Notes: Source: GSV
Middletown "Cromwell"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: CRWLCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 613, 632, 635 Notes: Source: GSV
Middletown "Durham"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: DRHMCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 349 Notes: Source: GSV
Middletown "Portland"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: PTLDCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 342 Notes: Source: GSV
Moodus	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: MODSCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 873 Notes: Source: GSV
Mystic "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: MYSTCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 245, 536, 572 Notes: Source: GSV
Mystic "Stonington"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: SGTNCT00RS1 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 535, 599 Notes: Also serves the Pawcatuck ratecenter. Source: GSV
New Britain "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: NWBRCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 223-5, 229, 348, 612, 826-7, 832, 991 Notes: Source: GSV
New Britain "Berlin"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: BRLNCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 828-9 Notes: Source: GSV
New London "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: NWLNCT02DS1 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 271, 437, 439-40, 443-4, 447, 701 Notes: Source: GSV
New London "Groton"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: GRTNCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 396, 405, 433, 441, 445-6, 448-9, 629, 686, 694, 715, 732 Notes: Source: GSV
New Milford	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: NMFRCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 210, 350, 354-5 Notes: Source: GSV
Niantic	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: NINTCT00RS1 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 691, 739 Notes: Source: GSV
Norfolk Photo 2	Listing Updated: May 2016 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: NRFLCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 542 Notes:
North Thompson "Thompson"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: THSNCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 923, 935 Notes: Also serves Putnam ratecenter. Source: GSV
Norwich "Main"	Listing Updated: May 2013 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: NRWCCT00DS1 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 204, 312, 425, 823, 859, 862, 885-7, 889, 892 Notes: Source: GSV
Norwich "Baltic"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: BLTCCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 822 Notes: Source: GSV
Norwich "Montville"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: MTVLCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 367, 848 Notes: Source: GSV
Old Saybrook "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: OLSYCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 388, 391, 395, 510 Notes: Source: GSV
Old Saybrook "Westbrook"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WSBKCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 399 Notes: Source: GSV
Plainfield Photo 2	Listing Updated: June 2013 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: PLFDCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 230, 546, 564 Notes: Also serves the Canterbury ratecenter. Source: Roberto in MA.
Plainville	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: PLVLCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 410, 641, 747, 793 Notes: Also serves the Bristol ratecenter. Source: GSV
Putnam	Listing Updated: May 2022 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: PTNMCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 928, 963 Notes: Cut over to a DMS-100 in 1990. Source: GSV
Rockville	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: RKVLCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 870-2, 875, 896 Notes: Source: GSV
Sharon	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: SHRNCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 364 Notes: Source: GSV
Simsbury "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: SMBYCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 408, 651, 658, 843 Notes: Source: GSV
Simsbury "Granby"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: GRNBCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 653, 844 Notes: Source: GSV
Southington	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: STTNCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 276, 378, 620-1, 628, 681 Notes: Source: GSV
Stafford Springs	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: STSPCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 684 Notes: Source: GSV
Storrs	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: STRSCT01RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 429, 487 Notes: Source: GSV
Torrington "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: TRTNCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 482, 485, 489, 496, 626, 689 Notes: Also serves the Harwinton ratecenter. Source: GSV
Torrington "Goshen"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: GSHNCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 491 Notes: Source: GSV
Washington	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WASHCT00RS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 868 Notes: Source: GSV
Watertown	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WTTWCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 274, 945 Notes: Source: GSV
Willimantic "Main"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WLMNCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 423, 450, 456, 465 Notes: Source: GSV
Willimantic "Hampton"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: HMPNCT00RS2 Switch Type: Ribbon/Genband/Notel RSC Prefixes Served: (860) 455 Notes: Source: GSV
Windsor Photo 2	Listing Updated: April 2014 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WNDSCT00DS0 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (860) 285, 298, 580, 607, 624, 683, 687-8, 731, 905 Notes:
Windsor Locks Photo 2 | Photo 3	Listing Updated: June 2015 / June 2013 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WLKSCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 204, 312, 425, 823, 859, 862, 885-7, 889, 892 Notes: Photo 3 was when this was AT&T.
Windsor Locks "Suffield"	Listing Updated: July 2017 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: SFFDCT00RS2 Switch Type: Nokia/Alcatel/Lucent 5ESS Remote Prefixes Served: (860) 668 Notes: Source: GSV
Winstead	Listing Updated: May 2016 Operating Company: Frontier/at&t/SBC/Southern New England Telephone CLLI: WNSTCT00DS0 Switch Type: Nokia/Alcatel/Lucent 5ESS Prefixes Served: (860) 379, 738 Notes: