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Area Codes 630 & 331
Telephone Central Office
Building Pictures
The following are representative examples of telephone central office buildings in Area Codes 630 & 331 (Illinois).
Click on the pictures below for a larger version.
Aurora
"Main"
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
AURRILARDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(630) 256, 264, 801, 844, 859, 892, 896-7, 906, 966Notes:
Source: GSV
Aurora East
"Main"
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
AURRILAEDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 236, 375, 499, 585, 692, 820, 851, 862, 898, 978Notes:
Source: GSV
Bartlett
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
BRTLILBTDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 213, 289, 372, 483, 540, 736, 830, 837
(847) 798Notes:
Source: GSV
Bensenville
Listing Updated:
July 2020Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
BNSVILBVDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 227, 238, 250, 285, 350, 467, 521, 595, 616. 694, 766, 773, 775, 787, 860, 875
(847) 957Notes:
Source: JDD
Bolingbrook
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
BGBKILBKDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(630) 226, 312, 378, 679, 759, 771Notes:
Also serves parts of Lemont. Source: GSV
Downers Grove
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
DWGVILDGDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 241, 271, 275, 322, 434-5, 493, 663, 769, 795Notes:
Source: GSV
Elburn
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
ELBNILEURS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(630) 365Notes:
Source: GSV
Elmhurst
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
EMHRILETDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(331) 221
(630) 279, 415, 516, 530, 617, 758, 782, 832-4, 941, 956, 993Notes:
Source: GSV
Geneva
"Main"
Listing Updated:
July 2020Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
GENVILGNDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 208, 232, 262, 345, 365, 377, 406, 443, 444, 482, 513, 584, 587, 761, 762, 840, 845, 879Notes:
Source: E. Stadick
Glen Ellyn
Listing Updated:
July 2020Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
GLELILGEDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(630) 469, 545, 790, 858, 942Notes:
Source: E. Stadick
Hinsdale
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
HNDLILHIDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 230, 321, 323, 325, 455, 654, 655, 734, 789, 794, 850, 856, 887, 920, 986Notes:
Source: GSV
Kaneville
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
KAVLILKARS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(630) 557Notes:
Source: GSV
Lemont
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
LEMTILLEDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(630) 243, 257, 914Notes:
Source: GSV
Lemont North
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
LEMTILLNDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(630) 252, 427, 739, 783 , 910, 972, 985Notes:
Source: GSV
Lombard
Listing Updated:
January 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
LBRDILLMDS0
LBRDILLMDS0Switch Type:
DS0: Nokia/Alcatel/Lucent 5ESS
DS1: Ribbon/Genband/Nortel DMS-100Prefixes Served:
DS0: (630) 221, 261, 268, 407, 678, 752, 792, 916
DS1: (630) 424, 458, 495, 543, 620, 627, 628, 629, 652, 691, 693, 705, 889, 932, 953Notes:
Source: E. Stadick
Naperville
"Main"
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
NPVLILNADS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 305, 355, 357, 369, 416, 420, 428, 527, 548, 579, 637, 646, 717-8, 753, 778, 798, 813, 848, 904, 922, 961, 983Notes:
Source: GSV
Oak Brook
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
OKBRILOADS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 218, 368, 472, 537, 571-5, 586, 623, 645, 684, 706, 722, 928, 954, 990Notes:
Source: GSV
Oswego
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
OSWGILOSDS0Switch Type:
Nokia/Siemsns EWSD DE5 RCUPrefixes Served:
(630) 551, 554Notes:
Source: GSV
Plano
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
PLANILPORS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(630) 552Notes:
Source: GSV
Roselle
Listing Updated:
July 2020Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
RSLLILRZDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(630) 295, 307, 314, 351, 529, 539, 582, 603, 612, 671, 893-4, 905, 924, 980
(847) 301, 352, 524, 534, 584, 891, 895, 923, 985Notes:
Source: E. Stadick
Sugar Grove
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
SGGVILSVDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 466Notes:
Source: GSV
Warrenville
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
WNVLILWVDS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(630) 393, 836Notes:
Source: GSV
West Chicago
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
WCHCILWCDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(630) 231, 293, 562, 876Notes:
Source: GSV
Wheaton
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
WHTNILWHDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(630) 260, 384, 462, 510, 588, 653, 665, 668, 681-2, 690, 784, 871, 933Notes:
Source: GSV
Yorkville
Listing Updated:
April 2021Operating Company:
at&t/SBC/Ameritech/Illinois BellCLLI:
YRVLILYORS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(630) 381, 553Notes:
Source: GSV
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Copyright 2021 Telephone Central Office Building
Pictures |