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Area Code 415
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Code 415 (San Francisco, California).

Click on the pictures below for a larger version.


San Francisco: Central

"Folsom"

Listing Updated:
July 2011

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNFCCA21DS0
SNFCCA21DS1

Switch Type:
DS0: Genband/Nortel DMS-100
DS1: Genband/Nortel DMS-100

Prefixes Served:
DS0: (415) 222, 227, 247, 278, 344, 348, 356-7, 396, 427, 495, 498, 538, 541, 543, 597, 618, 736, 744, 808, 817, 896, 904-5, 908, 932, 947, 972-5, 977-9, 995

DS1: (415) 243, 281, 284, 369, 371, 442, 512, 536-7, 542, 545-7, 615, 624, 644, 764, 768, 777-8, 836, 856, 882, 894, 957, 998

Notes:
Also known as San Francisco 21. Very large "office building" like central office. Home to a several CLEC switches and a large regional tandem switch as well as an AT&T Long Lines 4ESS tandem (089-T).

 

San Francisco: Central

"McCoppin"

Photo 2 | Photo 3

Listing Updated:
October 2011

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNFCCA04DS0
SNFCCA04DS1

Switch Type:
DS0: Genband/Nortel DMS-100
DS1: Genband/Nortel DMS-100

Prefixes Served:
DS0: (415) 241, 355, 431, 436-7, 487, 522, 551, 554, 556-7, 565, 581, 701, 703, 934

DS1: (415) 252, 255, 503, 552-3, 558, 575, 621, 626, 734, 832, 861, 863-5

Notes:
Source: TCO

 

San Francisco: Central

"Steiner"

Listing Updated:
August 2016

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNFCCA12DS0
SNFCCA12DS1

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
DS0: (415) 292, 345-6, 353, 359, 409, 440-1, 447, 561, 563, 567, 673-4, 931

DS1: (415) 202, 351, 474, 600, 614, 749, 771, 775-6, 833, 885, 921-3, 928-9

Notes:
Source: Bob H.

 

 

San Francisco: Central

"25th Street"

Photo 2

 

Listing Updated:
October 2011

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNFCCA05DS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(415) 206, 282, 285, 401, 550, 641-3, 647-8, 695, 821, 824, 826, 920, 970

Notes:
Source: TCO

 

San Francisco: Juniper

"Onondaga"

Photo 2

Listing Updated:
October 2011

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNFCCA06DS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(415) 239, 333-4, 337-8, 404-6, 452, 469, 582, 584-7, 841

Notes:
Source: TCO

 

San Francisco: Montrose-Evergreen

"9th Avenue"

Listing Updated:
August 2016

Operating Company:
at&t/SBC/Pacific Telesis/Pacific Telephone

CLLI:
SNFCCA13DS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(415) 221, 379, 386-7, 422, 666, 668, 750-2, 831, 876, 933

Notes:
Source: Bob H.

 

 


Copyright 2016 Telephone Central Office Building Pictures
Page last modified August 20, 2016
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