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Area Code 920
Telephone Central Office
Building Pictures
The following are representative examples of telephone central office buildings in Area Code 920 (eastern Wisconsin).
Click on the pictures below for a larger version.
Abrams
Listing Updated:
August 2011Operating Company:
Nsight / Bayland TelephoneCLLI:
(was ABRMWIXADS0)Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(920) 826Notes:
HQ for Nsight Teleservices and their CellCom cellular division. I'm not sure which building houses the DMS-10 switch. Photo 2 shows the back of the main building, while Photo 3 shows the garage next to the main building.
Algoma
Listing Updated:
August 2020Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
ALGMWI11RS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(920) 365, 487Notes:
Source: E. Stadick
Baileys Harbor
Listing Updated:
August 2020Operating Company:
Frontier/Verizon/GTECLLI:
BLHRWIXARS0Switch Type:
Nokia/Alcatel/Lucant/Automatic Electric GTD-5 EAX RemotePrefixes Served:
(920) 839Notes:
Source: E. Stadick
Beaver Dam / Burnett
Listing Updated:
March 2009Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
BVDMWI01DSASwitch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(920) 356, 689 (Burnett), 885, 887Notes:
Was originally a #1 Step by Step, now a Lucent 5ESS. Photo 2 shows a microwave dish pointed to the microwave relay station in Slinger, WI.
Source: Joe M..
Berlin
Listing Updated:
August 2014Operating Company:
Brightspeed/Centurylink/CenturyTelCLLI:
BRLNWI01DS0Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(920) 361Notes:
Source: Joe M..
Brandon
Listing Updated:
May 2014Operating Company:
Brightspeed/Centurylink/CenturyTel/Fairwater-Brandon-Alto Telephone Co.CLLI:
BRNDWIXBRS0Switch Type:
Remote Switch (unknown type)Prefixes Served:
(920) 346Notes:
Originally had an Nokia/Lucent/Automatic Electric Step by Step switch. Source: Joe M..
Campbellsport
Listing Updated:
September 2007Operating Company:
Frontier/VerizonGTECLLI:
CMPTWIXARS0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5 RSUPrefixes Served:
(920) 533Notes:
Was an AE SXS until 1982, then ITS-5 Host until 2005, now an AE remote off GTD-5 in Oak Field, WI. Was one of the first switches in GTE to be digital.
Source: Joe M..
Cedar Grove
Listing Updated:
September 2020Operating Company:
Frontier/Verizon/GTECLLI:
CDGVWIXARS0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5 RSUPrefixes Served:
(920) 668Notes:
Source: E. Stadick
Clyman
Listing Updated:
July 2015Operating Company:
Frontier/Verizon/GTECLLI:
CLYMWIXARL0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5 RemotePrefixes Served:
(920) 696Notes:
Source: Joe M..
Fond Du Lac
Listing Updated:
June 2016Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
FDULWI01DS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(920) 266, 906-7, 921-4, 926, 929Notes:
Source: Joe M..
Forestville
Listing Updated:
August 2020Operating Company:
Brightspeed/Centurylink/CenturyTelCLLI:
FSVLWIXADS0Switch Type:
Digital Switch (unknown type)Prefixes Served:
(920) 856Notes:
Source: E. Stadick
Fox Lake
Listing Updated:
June 2011 / March 2009Operating Company:
Brightspeed/Centurylink/CenturyTel/People's TelephoneCLLI:
FXLKWIXARS0Switch Type:
Nokia/Alcatel/Lucent 5ESS remotePrefixes Served:
(920) 928Notes:
Before 1995 was People's Telephone Co. Was A DMS-10 Now is a AT&T 5ESS-2000. Photo 2 is the original photo taken in March 2009. Source: Joe M..
Green Bay
"Cardinal"
Listing Updated:
August 2011Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
GNBYWI13DS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(920) 434, 661-2Notes:
Serves western parts of Green Bay ratecenter.
Green Bay
"Jefferson"
Listing Updated:
January 2017Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
GNBYWI01DS1
GNBYWI01DSASwitch Type:
DS1: Ribbon/Genband/Nortel DMS-100
DSA: Nokia/Alcatel/Lucent 5ESSPrefixes Served:
DS1: (920) 430-3, 435-8, 444-5, 455
DSA: (920) 448Notes:
Green Bay
"Ridge"
Listing Updated:
August 2011Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
GNBYWI11DS0
GNBYWI11DSA
GNBYWI11RS0Switch Type:
DS0 & DSA: Ribbon/Genband/Nortel DMS-100
RS0: Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
DS0: (920) 327
DSA: (920) 405, 429, 490-1, 494, 496-9, 592
RS0: (920) 492Notes:
Serves northwestern parts of Green Bay ratecenter.
Green Lake
Listing Updated:
September 2021Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
GNLKWI11DS1Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(920) 294Notes:
Source: E. Stadick
Horicon
Listing Updated:
August 2014Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
HRCNWI11RS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(920) 485Notes:
Source: Joe M..
Hustisford
Listing Updated:
July 2015Operating Company:
Frontier/Verizon/GTECLLI:
HSFDWIXARS0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5 RemotePrefixes Served:
(920) 349Notes:
Source: Joe M..
Kewaunee
Listing Updated:
August 2020Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
KEWNWI11RS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(920) 388Notes:
Source: E. Stadick
Larsen
Listing Updated:
June 2016Operating Company:
Brightspeed/Centurylink/CenturyTel/Larsen-Readfield Telephone CoCLLI:
LRSNWIXADSASwitch Type:
Nokia Networks DCOPrefixes Served:
(920) 836Notes:
Source: Joe M..
Lebanon
Listing Updated:
July 2015Operating Company:
Frontier/Verizon/GTECLLI:
LBNNWIXARL0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5 RemotePrefixes Served:
(920) 925Notes:
Source: Joe M..
Lena
Listing Updated:
August 2011Operating Company:
Brightspeed/Centurylink/CenturyTelCLLI:
LENAWIXARS0Switch Type:
Ribbon/Genband/Nortel RSCPrefixes Served:
(920) 829Notes:
Lomira
Listing Updated:
August 2014Operating Company:
Frontier/Verizon/GTECLLI:
LOMRWIXARS6Switch Type:
Remote Switch (unknown type)Prefixes Served:
(920) 269Notes:
One of the first Vidar remote digital offices. It was a remote off of a Vidar switch in Campbelsport, WI circa 1978. It had replaced an outgrown Nokia/Lucent/Automatic Electric Step by Step switch. Though the exact switch is not known, it now appears to be an AE GTD-5 remote hosted in Oakfield. Source: Joe M..
Mapleton
Listing Updated:
May 2015Operating Company:
Frontier/Verizon/GTECLLI:
MPTNWIXARS0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5 RemotePrefixes Served:
(920) 355, 474Notes:
Manual until 1957, then a Leich all-relay switch was installed. Current building built in 1969 for an Nokia/Lucent/Automatic Electric step by step. In 1991, current switch installed. Source: Joe M..
Mayville
Listing Updated:
July 2015Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
MYVLWI11RS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(920) 387Notes:
Source: Joe M..
Neenah
Listing Updated:
June 2016Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
NENHWI11DS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(920) 215, 720-2, 725, 727, 729, 751, 969Notes:
Source: Joe M..
Neosho
Listing Updated:
July 2015Operating Company:
Frontier/Verizon/GTECLLI:
NESHWIXARS0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5 RemotePrefixes Served:
(920) 368, 625Notes:
Source: Joe M..
Oconto
Listing Updated:
August 2011Operating Company:
Brightspeed/Centurylink/CenturyTel/Ameritech/ Wisconsin TelephoneCLLI:
OCNTWI11RS1Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote (EXM)Prefixes Served:
(920) 834Notes:
Oconto is part of a group of ratecenters that were sold to CenturyTel from Ameritech several years ago.
Oconto Falls
Listing Updated:
August 2011Operating Company:
Brightspeed/Centurylink/CenturyTel/Ameritech/ Wisconsin TelephoneCLLI:
OCFLWI11RS1Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote (EXM)Prefixes Served:
(920) 846Notes:
Oconto Falls is part of a group of ratecenters that were sold to CenturyTel from Ameritech several years ago.
Omro
Listing Updated:
June 2016Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
OMROWI11DS0Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(920) 685Notes:
Source: Joe M..
Oostburg
Listing Updated:
September 2020Operating Company:
Frontier/Verizon/GTECLLI:
OSBGWIXARS0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5 RSUPrefixes Served:
(920) 564Notes:
Source: E. Stadick
Oshkosh
Listing Updated:
June 2016Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
OSHKWI01DSASwitch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(920) 223, 231-3, 235-7, 303, 424, 426, 527Notes:
Source: Joe M..
Princeton
Listing Updated:
September 2012Operating Company:
Brightspeed/Centurylink/CenturyTelCLLI:
PRTNWI11DS0Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(920) 295Notes:
Randolph
Listing Updated:
March 2009Operating Company:
Brightspeed/Centurylink/CenturyTel/People's TelephoneCLLI:
RNDHWIXBDS1Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(920) 326Notes:
Before 1995 was People's Telephone Company. Was A DMS-10 now a AT&T 5ESS-2000. Photo 2 is the old CO building before the new one was built. Source: Joe M..
Random Lake
Listing Updated:
September 2020Operating Company:
Frontier/Verizon/GTECLLI:
RNLKWIXADS0Switch Type:
Nokia/Alcatel/Lucant/Automatic Electric GTD-5 EAXPrefixes Served:
(920) 994Notes:
Source: E. Stadick
Redgranite
Listing Updated:
August 2014Operating Company:
Brightspeed/Centurylink/CenturyTelCLLI:
RDGRWI11DS0Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(920) 566Notes:
Source: Joe M..
Ripon
Listing Updated:
May 2014Operating Company:
Brightspeed/Centurylink/CenturyTel/PTI/Northwest TelephoneCLLI:
RIPNWIXADS2Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(920) 745, 748Notes:
Originally a Stromberg-Carlson XY switch. Source: Joe M..
Sister Bay
Listing Updated:
August 2020Operating Company:
Frontier/Verizon/GTECLLI:
SSBYWIXADS0Switch Type:
Nokia/Alcatel/Lucant/Automatic Electric GTD-5 EAX RemotePrefixes Served:
(920) 854Notes:
Source: E. Stadick
Sturgeon Bay
Listing Updated:
August 2020Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
STBYWI11RS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(920) 743, 746Notes:
Source: E. Stadick
Theresa
Listing Updated:
July 2015Operating Company:
Frontier/Verizon/GTECLLI:
THRSWIXARS4Switch Type:
Remote Switch (unknown type)Prefixes Served:
(920) 276, 488Notes:
Source: Joe M..
Two Rivers
Listing Updated:
August 2020Operating Company:
Frontier/Verizon/GTECLLI:
TWRVWIXADS0Switch Type:
Nokia/Alcatel/Lucant/Automatic Electric GTD-5 EAXPrefixes Served:
(920) 793-4Notes:
Source: E. Stadick
Watertown
Listing Updated:
May 2014Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
WTTWWI01DSASwitch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(920) 206, 261-2Notes:
Originally had a #5 Crossbar switch. Source: Joe M..
Waupun
Listing Updated:
May 2014Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
WAPNWI11RS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(920) 324Notes:
Originally had a CDO step by step switch. Source: Joe M..
Wautoma
Listing Updated:
August 2014Operating Company:
Brightspeed/Centurylink/CenturyTelCLLI:
WTMAWIXADS0Switch Type:
Nokia/Lucent/Automatic Electric GTD-5Prefixes Served:
(920) 787Notes:
Source: Joe M..
Weyauwega
Listing Updated:
June 2011Operating Company:
Brightspeed/Centurylink/CenturyTelCLLI:
WYWGWIXADS0Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(920) 867Notes:
Source: Joe M..
Wild Rose
Listing Updated:
October 2021Operating Company:
Brightspeed/Centurylink/CenturyTelCLLI:
WLDRWIXADS1Switch Type:
Ribbon/Genband/Nortel DMS-10 HostPrefixes Served:
(920) 622Notes:
Source: Joe M..
Winneconne
Listing Updated:
June 2016Operating Company:
at&t/SBC/Ameritech/Wisconsin TelephoneCLLI:
WNCNWI11DS0Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(920) 582Notes:
Source: Joe M..
Visit other Wisconsin Area Codes: 262 414 608 715 920
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