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Area Code 231
Telephone Central Office
Building Pictures
The following are representative examples of telephone central office buildings in Area Code 231 (Northwest Lower Peninsula of Michigan).
Click on the pictures below for a larger version.
Bellaire
Listing Updated:
September 2023Operating Company:
Frontier/Verizon/GTECLLI:
BLLRMIXGDS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAXPrefixes Served:
(231) 533Notes:
Source: GSV
Beulah
Listing Updated:
November 2018Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
BELHMIMNRSASwitch Type:
Ribbon/Genband/Nortel RSCPrefixes Served:
(231) 882Notes:
Source: GSV
Big Rapids
Listing Updated:
December 2021Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
BGRPMIMNDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(231) 527, 591-2, 796Notes:
Source: GSV
Cadillac
Listing Updated:
November 2016Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
CDLCMIMNDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(231) 775, 779, 876Notes:
Source: GSV
Charlevoix
Listing Updated:
August 2018Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
CHVXMIMNRS0Switch Type:
Ribbon/Genband/Nortel RSCPrefixes Served:
(231) 237, 547Notes:
Source: GSV
Cheboygan
"Main"
Listing Updated:
July 2021Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
CHBYMIMNRSASwitch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(231) 597, 627Notes:
Source: GSV
Chippewa Lake
Listing Updated:
September 2019Operating Company:
Brightspeed/CenturyLink/CenturyTelCLLI:
CHLKMIXIDS0Switch Type:
Nokia/Siemens/Stromberg-Carlson DCOPrefixes Served:
(231) 867Notes:
Source: GSV
Falmouth
Listing Updated:
September 2023Operating Company:
Brightspeed/CenturyLink/CenturyTelCLLI:
FLMOMIXIDS0Switch Type:
Nokia/Siemens/Stromberg-Carlson DCOPrefixes Served:
(231) 826Notes:
Source: GSV
Glen Lake
"Glen Arbor"
Listing Updated:
August 2023Operating Company:
Brightspeed/CenturyLink/CenturyTelCLLI:
GLARMIXIDS0Switch Type:
Nokia/Siemens/Stromberg-Carlson DCOPrefixes Served:
(231) 334Notes:
Source: GSV
Hart
Listing Updated:
November 2016Operating Company:
Frontier/Verizon/GTECLLI:
HARTMIXGRS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAX RemotePrefixes Served:
(231) 873Notes:
Source: GSV
Howard City
Listing Updated:
July 2015Operating Company:
Frontier/Verizon/GTECLLI:
HWCYMIXGDS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAXPrefixes Served:
(231) 937Notes:
Source: GSV
Kaleva
Listing Updated:
August 2009Operating Company:
Kaleva Telephone CompanyCLLI:
KLVAMIXIDS0Switch Type:
Nokia/Siemens/Stromberg-Carlson DCOPrefixes Served:
(231) 362, 447, 848, 859Notes:
Serves multiple ratecenters. Source: GSV
Kalkaska
Listing Updated:
August 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
KLKSMIKKDS0Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(231) 258Notes:
Source: GSV
Kingsley
Listing Updated:
August 2018Operating Company:
Brightspeed/CenturyLink/CenturyTelCLLI:
KGSLMIXIDS0Switch Type:
Nokia/Siemens/Stromberg-Carlson DCOPrefixes Served:
(231) 263Notes:
Source: GSV
Lake Ann
Listing Updated:
November 2023Operating Company:
Brightspeed/CenturyLink/CenturyTelCLLI:
LKANMIXIDS0Switch Type:
Nokia/Siemens/Stromberg-Carlson DCOPrefixes Served:
(231) 275Notes:
Source: GSV
Ludington
Listing Updated:
November 2021Operating Company:
Frontier/Verizon/GTECLLI:
LDNGMIXGDS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAXPrefixes Served:
(231) 843, 845Notes:
Source: GSV
Manistee
Listing Updated:
October 2015Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
MNSTMIMNDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(231) 398, 723Notes:
Source: GSV
Mecosta
Listing Updated:
September 2019Operating Company:
Brightspeed/CenturyLink/CenturyTelCLLI:
MCSTMIXIDS0Switch Type:
Nokia/Siemens/Stromberg-Carlson DCOPrefixes Served:
(231) 972Notes:
Source: GSV
Merritt
Listing Updated:
August 2019Operating Company:
Brightspeed/CenturyLink/CenturyTelCLLI:
MRRTMIXIDS0Switch Type:
Nokia/Siemens/Stromberg-Carlson DCOPrefixes Served:
(231) 328Notes:
Source: GSV
Mesick
Listing Updated:
September 2023Operating Company:
Acentek/Ace Telephone Company of MichiganCLLI:
MSCKMIXIRS0Switch Type:
Ribbon/Genband G6 RemotePrefixes Served:
(231) 269, 369, 378, 862, 885Notes:
Serves multiple ratecenters. Source: GSV
Muskegon
"Main"
Listing Updated:
October 2019Operating Company:
Frontier/Verizon/GTECLLI:
MSKGMIXKDS1Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(231) 571, 720, 722, 724-5, 727-8, 736, 747, 760, 769Notes:
Source: GSV
Muskegon
"Dalton"
Listing Updated:
September 2021Operating Company:
Frontier/Verizon/GTECLLI:
MSKGMIXQRS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAX RemotePrefixes Served:
(231) 766Notes:
Source: GSV
Muskegon
"East"
Listing Updated:
July 2011Operating Company:
Frontier/Verizon/GTECLLI:
MSKGMIXNDS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAXPrefixes Served:
(231) 767, 773, 777Notes:
Source: GSV
Muskegon
"Heights"
Listing Updated:
September 2019Operating Company:
Frontier/Verizon/GTECLLI:
MSKHMIXPDS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAXPrefixes Served:
(231) 733, 737, 739, 830Notes:
Source: GSV
Muskegon
"Lakeside"
Listing Updated:
September 2019Operating Company:
Frontier/Verizon/GTECLLI:
MSKGMIXRDS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAXPrefixes Served:
(231) 755, 759Notes:
Source: GSV
Muskegon
"North"
Listing Updated:
October 2019Operating Company:
Frontier/Verizon/GTECLLI:
MSKGMIXLDS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAXPrefixes Served:
(231) 719, 744Notes:
Source: GSV
Muskegon
"South"
Listing Updated:
September 2021Operating Company:
Frontier/Verizon/GTECLLI:
MSKGMIXMRSMSwitch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(231) 798-9Notes:
Source: GSV
Muskegon
"Wolf Lake"
Listing Updated:
September 2019Operating Company:
Frontier/Verizon/GTECLLI:
WLKMMIXGRS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAX RemotePrefixes Served:
(231) 788Notes:
Source: GSV
Northport
Listing Updated:
November 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
NPRTMIMNRSASwitch Type:
Ribbon/Genband/Nortel RSCPrefixes Served:
(231) 386Notes:
Source: GSV
Petoskey
Listing Updated:
September 2019Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
PTSKMIMNDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(231) 347-8, 439, 487Notes:
Source: GSV
Reed City
Listing Updated:
November 2018Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
RDCYMIMNRSASwitch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(231) 832Notes:
Source: GSV
Suttons Bay
Listing Updated:
November 2023Operating Company:
Brightspeed/CenturyLink/CenturyTelCLLI:
STBYMIXIRS1Switch Type:
Remote Switch (unknown type)Prefixes Served:
(231) 271Notes:
Source: GSV
Traverse City
"Main"
Listing Updated:
September 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
TRCYMIMNDS1Switch Type:
Ribbon/Genband/Nortel DMS-100/200Prefixes Served:
(231) 890, 922, 929, 932-3, 935Notes:
Source: GSV
Traverse City
"Acme"
Listing Updated:
December 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
ACMEMIMNDS0Switch Type:
Nokia/Siemens EWSDPrefixes Served:
(231) 938Notes:
Source: GSV
Whitehall
Listing Updated:
October 2019Operating Company:
Frontier/Verizon/GTECLLI:
WHTHMIXGDS0Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAXPrefixes Served:
(231) 893-4, 981Notes:
Source: GSV
Visit other Michigan Area Codes: 231 248 269 313 517 586 616 734 810 906 989
Visit nearby regions: Indiana Ohio Ontario Wisconsin
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Copyright 2024 Telephone Central Office Building
Pictures |