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Area Codes 248 & 947
Telephone Central Office
Building Pictures
The following are representative examples of telephone central office buildings in Area Codes 248 & 947 (Northwestern Detroit, Michigan suburbs).
Click on the pictures below for a larger version.
Auburn Heights
Listing Updated:
May 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
ABHGMIMNDS0Switch Type:
Nokia/Siemens EWSD DE5Prefixes Served:
(248) 265, 267, 293, 299, 312, 606, 641, 696, 813, 828, 844, 852-3, 879, 952, 964Notes:
Also serves parts of Birmingham and Troy. Source: GSV
Birmingham
Listing Updated:
November 2021Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
BRHMMIMNDS0Switch Type:
Nokia/Siemens EWSD DE5Prefixes Served:
(248) 203, 258, 433, 540, 549, 554, 593-4, 642, 644-7, 723, 901, 988Notes:
This CO building once had a WECO 1AESS until mid-2011. The NNX codes that were once served by the 1AESS are now being served by the existing EWSD.Birmingham was the second area in the US to have nationwide Direct Distance Dialing (DDD). Also serves parts of Royal Oak. Source: GSV
Clarkston
Listing Updated:
May 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
CKTNMIMNDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(248) 620, 623, 625, 922Notes:
Source: GSV
Commerce
"Main"
Listing Updated:
September 2020Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
CMRCMICMDS0Switch Type:
Nokia/Siemens EWSDPrefixes Served:
(248) 360, 363, 366Notes:
Source: GSV
Commerce
"North"
Listing Updated:
June 2022Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
CMRCMINRRS2Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(248) 666, 698, 886Notes:
Also serves parts of Drayton Plains. Source: GSV
Drayton Plains
Listing Updated:
May 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
DRPLMIDPDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(248) 618, 673-4Notes:
Source: GSV
Farmington
"Main"
Listing Updated:
September 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
FRTNMIMNDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 426, 427, 442, 471, 473-4, 476-8, 615, 888Notes:
Source: GSV
Farmington
"Farmington Hills"
Listing Updated:
November 2021Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
FMHLMIFHDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 324-5, 488-9, 553, 592, 661, 788, 848, 994Notes:
Source: GSV
Holly
Listing Updated:
June 2022Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
HLLYMIHYRS1Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(248) 328, 634Notes:
Source: GSV
Lake Orion
Listing Updated:
May 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
LKORMILORS1Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(248) 693Notes:
Source: GSV
Milford-White Lake
"Milford"
Listing Updated:
July 2017Operating Company:
Frontier/Verizon/GTECLLI:
MLFRMIXEDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 676, 684-5Notes:
Source: GSV
Milford-White Lake
"White Lake"
Listing Updated:
July 2022Operating Company:
Frontier/Verizon/GTECLLI:
WHLKMIXGDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 887, 889Notes:
Source: GSV
Northville
Listing Updated:
May 2019Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
NRVLMIMNDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 305, 344, 347-9, 374, 380, 449, 465, 596, 735Notes:
Source: GSV
Ortonville
Listing Updated:
May 2023Operating Company:
Frontier/Verizon/GTECLLI:
ORVLMIXGDS0Switch Type:
Ribbon/Genband/Nortel DMS-10Prefixes Served:
(248) 627Notes:
Source: GSV
Oxford
Listing Updated:
July 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
OXFRMIOXDS0Switch Type:
Nokia/Siemens EWSDPrefixes Served:
(248) 236, 628, 969Notes:
Source: GSV
Pontiac
"Main"
Listing Updated:
June 2019Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
PNTCMIMNDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 339, 451-2, 454, 456, 753, 758, 857-8, 874, 972, 975Notes:
Source: GSV
Pontiac
"Lake Orion"
Listing Updated:
July 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
PNTCMINRRS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(248) 391, 393-4Notes:
Could also be called "Pontiac North". Also serves parts of Clarkston. Source: GSV
Pontiac
"Northeast"
Listing Updated:
September 2019Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
PNTCMINERPASwitch Type:
Ribbon/Genband G6Prefixes Served:
(248) 276, 340, 364, 370-1, 373, 375, 377, 475, 754Notes:
Source: GSV
Pontiac
"West"
Listing Updated:
October 2021Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
PNTCMIWSRP0Switch Type:
Remote Packet Switch (unknown type)Prefixes Served:
(248) 681-3, 706, 738Notes:
Source: GSV
Rochester
Listing Updated:
June 2023Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
ROCHMIMNDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(248) 601, 608, 650-2, 656Notes:
Source: GSV
Royal Oak
Listing Updated:
August 2022Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
RYLOMIMNDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(248) 336, 398-9, 414, 541-8, 582, 584, 586, 591, 691
(313) 564Notes:
Also serves parts of Detroit Zone 03. Source: GSV
South Lyon
Listing Updated:
August 2019Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
SLYNMIMNDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 437, 448, 486Notes:
Source: GSV
Southfield
"Main"
Listing Updated:
November 2022Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
SFLDMIMNDS1Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 208, 213, 223, 262-3, 304, 350-9, 368, 372, 386, 445, 447-8, 455, 501, 503, 603, 746, 799, 827, 902-3, 945, 948
(313) 233, 507-8, 786Notes:
Also serves parts of Detroit Zone 5. Source: GSV
Southfield
"Oakfield"
Listing Updated:
August 2022Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
SFLDMIOKDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(248) 331, 395, 423-4, 443, 483, 552, 557, 559, 569, 849, 905, 967-8
(313) 249, 275, 302, 560, 599, 602, 780Notes:
Also serves parts of Royal Oak and Detroit Zone 5. Source: GSV
Troy
"Main"
Listing Updated:
October 2022Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
TROYMIMNRPASwitch Type:
Remote Packet Switch (unknown type)Prefixes Served:
(248) 307, 457, 524, 526, 528, 577, 583, 585, 588-9, 597, 616, 619, 680, 689, 733, 740, 743Notes:
Serves parts of Royal Oak. Source: GSV
Troy
"Somerset"
Listing Updated:
October 2020Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
TROYMISMDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 244, 269, 273, 280, 288, 362, 404, 435, 458, 463, 551, 614, 637, 643, 649, 655, 816, 822, 898Notes:
Serves parts of Birmingham and Royal Oak. Source: GSV
Walled Lake
Listing Updated:
September 2019Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
WDLKMIMNDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(248) 624, 668-9, 926, 960Notes:
Source: GSV
West Bloomfield
Listing Updated:
July 2022Operating Company:
at&t/SBC/Ameritech/Michigan BellCLLI:
WBFDMIMNDS0Switch Type:
Nokia/Siemens EWSD DE5Prefixes Served:
(248) 538-9, 626, 737, 851, 855, 865, 932Notes:
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 2023 Telephone Central Office Building
Pictures |