Area Code 213
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Code 213 (Inner City Los Angeles, California).

Click on the pictures below for a larger version.

Los Angeles Zone 01 "Madison Complex"	Listing Updated: December 2021 Operating Company: at&t/SBC/Pacific Telesis/Pacific Bell CLLI: LSANCA03DS1 LSANCA03DS2 Switch Type: DS1: Ribbon/Genband//Nortel DMS-100 DS2: Ribbon/Genband//Nortel DMS-100 Prefixes Served: DS0: (213) 217, 229, 346, 356, 576, 613, 620-1, 625-6, 633, 687, 830, 894, 897 DS1: (213) 228, 239, 243, 312, 327, 347, 362, 426, 488-9, 532, 538, 599, 612, 622-3, 627, 670, 673, 694, 833, 861, 896 Notes: Technically the same building as "Olive Street" Source: GSV
Los Angeles Zone 01 "Olive Street"	Listing Updated: December 2021 Operating Company: at&t/SBC/Pacific Telesis/Pacific Bell CLLI: LSANCA02DS3 LSANCA02DS4 LSANCA02DS5 Switch Type: DS3:  Ribbon/Genband//Nortel DMS-100 DS4:  Ribbon/Genband//Nortel DMS-100 DS5:  Nokia/Alcatel/Lucent 5ESS Prefixes Served: DS3: (213) 237, 253, 473, 485, 628, 680, 808, 847, 893, 922, 928, 972, 974, 978 DS4: (213) 236, 244, 430, 452, 486, 533, 593, 614-5, 624, 629-30, 683, 688-9, 817, 891-2, 895, 955, 988, 996 DS5: (213) 437-9 Notes: Technically the same buuilding as "Madison Complex" Source: GSV
Los Angeles Zone 07 "Richmond"	Listing Updated: May 2024 Operating Company: at&t/SBC/Pacific Telesis/Pacific Bell CLLI: LSANCA09DS0 Switch Type: Ribbon/Genband//Nortel DMS-100 Prefixes Served: (213) 741-9, 763, 765 Notes: Source: GSV
Los Angeles Zone 10 "Rampart"	Listing Updated: February 2023 Operating Company: at&t/SBC/Pacific Telesis/Pacific Bell CLLI: LSANCA11DS0 LSANCA11DS1 LSANCA11DS2 Switch Type: DS0: Nokia/Alcatel/Lucent 5ESS DS1: Ribbon/Genband//Nortel DMS-100 DS2: Ribbon/Genband//Nortel DMS-100 Prefixes Served: DS0: (213) 339, 467 DS1: (213) 249, 351, 368, 381-2, 384, 387-9, 427, 637, 639, 738-9 DS2: (213) 251-2, 365, 380, 383, 385-6, 480, 487, 736, 908 Notes: Source: GSV
Los Angeles Zone 10 "Union"	Listing Updated: July 2022 Operating Company: at&t/SBC/Pacific Telesis/Pacific Bell CLLI: LSANCA06DS0 Switch Type: Ribbon/Genband//Nortel DMS-100 Prefixes Served: (213) 202, 207, 240-1, 250, 273, 345,353, 367, 413, 481-4, 580, 975, 977, 989 Notes: Also serves parts of Los Angeles Zone 01. Source: GSV

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