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Area Code 313
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Code 313 (Inner City Detroit, Michigan).

Click on the pictures below for a larger version.


 

Detroit Zone 01

"Bell"


 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIBLDS2

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 222-3, 496, 962

Notes:
Source: GSV

 

Detroit Zone 01

"Columbia"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMICLDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 494, 576-8, 745, 831-3, 966, 993

Notes:
Source: GSV

 

Detroit Zone 01

"Headquarters"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIBHDS1

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 221, 224-6, 234-5, 237, 256, 335, 338, 373, 442, 471, 596, 628, 760, 782, 961, 963-5, 967, 983

Notes:
Source: GSV

 

 

Detroit Zone 01

"Madison"


 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIMDDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 456, 556, 664, 758, 870-6, 916, 972, 974

Notes:
Source: GSV

 

Detroit Zone 01

"Riverfont"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIRVDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 259, 392-4, 396, 446, 553, 566-8, 656, 665, 667, 877

Notes:
Source: GSV

 

Detroit Zone 01

"Tyler"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMITEDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100/200

Prefixes Served:
(313) 361, 894-9

Notes:
Source: GSV

 

 

Detroit Zone 02

"Lenox"


 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMILXDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100/200

Prefixes Served:
(313) 331, 499, 821-4, 926

Notes:
Source: GSV

 

Detroit Zone 02

"Niagara"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMINIDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(313) 343, 417, 640, 642, 647, 881-2, 884-6

Notes:
Source: GSV

 

Detroit Zone 02

"Pingree"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIPGDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 245, 371-2, 521, 527, 839

Notes:
Source: GSV

 

Detroit Zone 02

"Plaza"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIPEDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100/200

Prefixes Served:
(313) 267, 365, 571, 579, 921-5

Notes:
Also serves parts of Detroit Zone 03. Source: GSV

 

Detroit Zone 03

"Highland Park"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
HGPKMITSDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 252, 852, 865-9, 883, 956-7

Notes:
Source: GSV

 

Detroit Zone 03

"Twinbrook"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMITWDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100/200

Prefixes Served:
(313) 366, 368-9, 891-3

Notes:
Source: GSV

 

Detroit Zone 04

"Hogarth"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIHGDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100/200

Prefixes Served:
(313) 491, 834, 931, 933-5

Notes:
Source: GSV

 

Detroit Zone 04

"University"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIUVDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 340-2, 345, 772, 861-4, 927

Notes:
Source: GSV

 

Detroit Zone 04

"Vermont"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIVTDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 270, 272-3, 493, 653, 659, 835-8

Notes:
Source: GSV

 

Detroit Zone 05

"Redford"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIRFDS0

Switch Type:
Nokia Siemens EWSD DE5

Prefixes Served:
(248) 777
(313) 255, 387, 531-5, 538, 541, 543, 592, 794

Notes:
Source: GSV

 

Detroit Zone 06

"Dearborn Main"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DRBRMIDBDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(313) 274, 277, 278, 359, 561-3, 565, 724, 730, 791-2

Notes:
Also housed a WECO 1AESS until 2011. Prefixes served by the 1AESS were absorbed by the co-located 5ESS in the same building. Source: GSV

 

Detroit Zone 06

"Dearborn Fairborn"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DRBRMIFBDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 240, 253, 271, 336, 425, 426, 438, 441, 583, 593, 982, 996

Notes:
Source: GSV

 

Detroit Zone 06

"Dearborn Oregon"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DRBRMIORDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 581-2, 584, 624, 846, 943, 945

Notes:
Source: GSV

 

 

Detroit Zone 06

"Detroit Vinewood"


 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
DTRTMIVWDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(313) 297, 551, 554, 841-3, 849

Notes:
Source: GSV

 

Detroit Zone 06

"Lincoln Park"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
LNPKMIATDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(313) 294, 381-3, 386, 388-9, 928

Notes:
Source: GSV

 

Detroit Zone 06

"Taylor Wick"
 

Listing Updated:
July 2020

Operating Company:
at&t/SBC/Ameritech/Michigan Bell

CLLI:
TAYLMIWKDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(313) 291-2, 295, 299, 375
(734) 287, 374, 946-7

Notes:
Also serves parts of Wyndotte & Romulus.
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


Copyright 2020 Telephone Central Office Building Pictures
Page last modified July 5, 2020
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