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Area Code 412
Telephone Central Office
Building Pictures
The following are representative examples of telephone central office buildings in Area Code 412 (with overlay Area Code 878) (Allegheny County except far north section).
Click on the pictures below for a larger version.
Clairton
Listing Updated:
May 2020Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
CLRTPACLRS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(412) 233Notes:
Source: GSV
Elizabeth
Listing Updated:
December 2021Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
ELZBPAELRS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(412) 382, 384Notes:
Source: GSV
Pittsburgh Zone 1
"Downtown"
Listing Updated:
August 2021Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPADTDS0
PITBPADTDS1
PITBPADTDS2
PITBPADTDS6
PITBPADT333Switch Type:
DS0: Ribbon/Genband/Nortel DMS-100
DS1: Nokia/Alcatel/Lucent 5ESS
DS2: Ribbon/Genband/Nortel DMS-100
DS6: Nokia/Alcatel/Lucent 5ESS
333: Nokia/Alcatel/Lucent 5ESSPrefixes Served:
DS0: (412) 261, 391, 394, 467, 565, 575, 579, 645, 740, 803, 880, 905
DS1: (412) 227, 232, 234, 236, 263, 291, 456, 471, 485, 552, 560, 566, 594, 658, 690, 867
DS2: (412) 255, 350, 355, 392-3, 497, 544, 553, 577, 642, 644, 705, 715, 762, 765, 768, 804, 807
DS6: (412) 201, 281, 288, 338, 396, 403, 434, 454, 633, 667
333: (412) 333Notes:
The 333 switch & prefix is the "mass calling" system for TV and radio stations. Source: GSV
Pittsburgh Zone 1
"Allentown"
Listing Updated:
October 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPAALRP0Switch Type:
Ribbon/Genband/Nortel CS 2000 remotePrefixes Served:
(412) 381, 390, 431-2, 481, 488Notes:
Originally a 5ESS. Source: GSV
Pittsburgh Zone 1
"North Side"
Listing Updated:
November 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPANSDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 231, 237, 320-3, 330, 359, 442Notes:
Source: GSV
Pittsburgh Zone 1
"Oakland"
Listing Updated:
September 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPAOKDS0
PITBPAOKDS1
PITBPAOKPS0Switch Type:
DS0: Ribbon/Genband/Nortel DMS-100
DS1: Nokia/Alcatel/Lucent 5ESS
PS0: Ribbon/Genband/Nortel CS 2000 SoftswitchPrefixes Served:
DS0: (412) 268, 862
DS1: (412) 383, 513, 578, 605, 621-4, 641, 647-8, 681-3, 687-8, 692, 802
PS0: (412) 801Notes:
Current source: GSV. Photos 2-4: Jeff M. in PA (September 2012).
Pittsburgh Zone 1
"Squirrel Hill"
Listing Updated:
August 2021Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPASQRP0Switch Type:
Ribbon/Genband/Nortel CS 2000 remotePrefixes Served:
(412) 420-2, 521Notes:
Originally an EWSD. Current source: GSV. Photo 2: Jeff M. in PA (September 2012).
Pittsburgh Zone 2
"Bellevue"
Listing Updated:
June 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
BLLVPABEDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(412) 732, 734, 761, 766Notes:
Source: GSV
Pittsburgh Zone 2
"West View"
Listing Updated:
April 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
WSVWPAWERS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(412) 801, 931, 939Notes:
Source: GSV
Pittsburgh Zone 3
"Millvale"
Listing Updated:
June 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
MLVAPAMIRS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(412) 821-2Notes:
Source: GSV
Pittsburgh Zone 3
"Sharpsburg"
Listing Updated:
August 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
SHSAPASHDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 781-2, 784, 799, 963, 967-8Notes:
Also serves parts of Pittsburgh Suburban Zone 19. Source: GSV. Photo 2 is what the CO looked like in 1936.
Pittsburgh Zone 4
"Braddock"
Listing Updated:
July 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
BRDDPABRDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(412) 271, 273, 351, 636Notes:
Source: GSV
Pittsburgh Zone 4
"Wilkinsburg"
Listing Updated:
August 2021Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
WKBGPAWKRP0Switch Type:
Ribbon/Genband/Nortel CS2K RemotePrefixes Served:
(412) 241-4, 247, 256, 371, 473, 731Notes:
Source: GSV
Pittsburgh Zone 5
"Homestead"
Listing Updated:
November 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
HMSTPAHODS0Switch Type:
Nokia Siemens EWSDPrefixes Served:
(412) 461-2, 464, 476Notes:
Source: GSV
Pittsburgh Zone 6
"Carrick"
Listing Updated:
October 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPACADS0Switch Type:
Nokia Siemens EWSDPrefixes Served:
(412) 819, 881-2, 884-6Notes:
Source: GSV
Pittsburgh Zone 6
"Dormont"
Listing Updated:
October 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
DRMTPADORP1Switch Type:
Ribbon/Genband/Nortel CS 2000 remotePrefixes Served:
(412) 306, 341, 343-4, 388, 531, 561, 563, 571-2Notes:
Originally was a 5ESS. Source: GSV
Pittsburgh Zone 7
"Crafton"
Listing Updated:
September 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
CRAFPACRDS0Switch Type:
Nokia Siemens EWSDPrefixes Served:
(412) 520, 919-22, 928, 937Notes:
Source: GSV
Pittsburgh Zone 7
"McKees Rocks"
Listing Updated:
November 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
MCRKPAMRDS0Switch Type:
Ribbon/Genband/Nortel DMS-100Prefixes Served:
(412) 331, 771, 777-8Notes:
Source: GSV
Pittsburgh Zone 8
"East Liberty"
Listing Updated:
September 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPAELRP0Switch Type:
Digital Switch (unknown type)Prefixes Served:
(412) 361-3, 365, 441, 661, 665Notes:
Originally was a 5ESS switch, cutover in October 2020. Source: GSV
Pittsburgh Suburban Zone 10
"Elizabeth Twp."
Listing Updated:
November 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
ELZTPAETDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 751, 754Notes:
Source: GSV
Pittsburgh Suburban Zone 10
"McKeesport"
Listing Updated:
October 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
MCPTPAMKDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 664, 672-3, 675, 678Notes:
Source: GSV
Pittsburgh Suburban Zone 10
"West Mifflin"
Listing Updated:
November 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
WMFLPAWMDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 460, 466, 469Notes:
Source: GSV
Pittsburgh Suburban Zone 11
"Pleasant Hills"
Listing Updated:
July 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PLHSPAPHDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 650, 653, 655, 892Notes:
Scheduled to become a Nortel CS 2000 remote in January 2025. Source: GSV
Pittsburgh Suburban Zone 13
"Bridgeville"
Listing Updated:
June 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
BGVLPABRDS0Switch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(412) 220, 221, 257, 914Notes:
Current photo: GSV. Photos 2-3: August 2009. Originally a #5 crossbar office until the mid 1980s.
Pittsburgh Suburban Zone 14
"Carnegie"
Listing Updated:
June 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
CARNPACARP0Switch Type:
Ribbon/Genband/Nortel CS2K RemotePrefixes Served:
(412) 276, 278-9, 429, 923Notes:
Source: GSV
Pittsburgh Suburban Zone 14
"Robinson Twp."
Listing Updated:
July 2021Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
RBTPPARTRP0Switch Type:
Ribbon/Genband/Nortel CS 2000 remotePrefixes Served:
(412) 490, 494, 747, 787-8, 809, 859Notes:
Source: GSV
Pittsburgh Suburban Zone 15
"Coraopolis
Listing Updated:
June 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
CRPLPACODS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 262, 264, 269, 299, 604
(724) 457Notes:
Also serves Glenwillard in Area Code 724. Source: GSV
Pittsburgh Suburban Zone 16
"Sewickley"
Listing Updated:
September 2022Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
SWKYPASERS1Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(412) 741, 749Notes:
Source: GSV
Pittsburgh Suburban Zone 17
"Perrysville"
Listing Updated:
June 2019Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PYVLPAPEDS0Switch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(412) 358, 364, 366-7, 369, 630, 635Notes:
Current photo: GSV. Photo 2: October 2005. Was a #5 crossbar office until the mid 1980s.
Pittsburgh Suburban Zone 18
"Glenshaw"
Listing Updated:
September 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
GLNSPAGLDS0Switch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(412) 486, 487, 492, 961Notes:
Current photo: GSV. Photos 2-3: October 2005. Was a #5 crossbar office until the mid 1980s. Also serves one prefix in Pittsburgh Zone 3 (412-961), which is commonly used as a Foreign Exchange or Foreign Central Office prefix.
Pittsburgh Suburban Zone 19
"Dorseyville"
Listing Updated:
June 2019Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
DRVLPADORS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(412) 767Notes:
Current photo: GSV. Photo 2: January 2006. Was a #5 crossbar office until the mid 1980s.
Pittsburgh Suburban Zone 20
"Oakmont"
Listing Updated:
December 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
OKMTPAOADS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 820, 826, 828Notes:
Source: GSV
Pittsburgh Suburban Zone 21
"Penn Hills"
Listing Updated:
August 2021Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PEHLPAPHDS0Switch Type:
Nokia Siemens EWSDPrefixes Served:
(412) 793, 795, 798
Notes:
Source: GSV
Pittsburgh Suburban Zone 22
"Monroeville"
Listing Updated:
July 2019Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
MOVLPAMODS0Switch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(412) 372-4, 380, 666, 856, 858Notes:
Current photo: GSV. Photo 2: October 2005. Was a #5 crossbar office until the mid 1980s.
Pittsburgh Suburban Zone 22
"Turtle Creek"
Listing Updated:
August 2023Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
TRCKPATCRP1Switch Type:
Ribbon/Genband/Nortel CS 2000 remotePrefixes Served:
(412) 816, 823-5, 829Notes:
Was an EWSD until recently. Source: GSV
Visit other Pennsylvania Area Codes: 215 412 570 610 717 724 814
Visit nearby regions: Delaware Maryland New Jersey New York Ohio West Virginia
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Copyright 2024 Telephone Central Office Building
Pictures |