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Area Code 412 & 878
Telephone Central Office
Building Pictures
The following are representative examples of telephone central office buildings in Area Codes 412 & 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:
August 2014Operating 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:
July 2014Operating 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:
August 2014Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPAALDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 381, 390, 431-2, 481, 488Notes:
Source: GSV
Pittsburgh Zone 1
"North Side"
Listing Updated:
July 2014Operating 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 2012Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPAOKDS0
PITBPAOKDS1
PITBPAOKPS0Switch Type:
DS0: Ribbon/Genband/Nortel DMS-100
DS1: Nokia/Alcatel/Lucent 5ESS
PS0: Packet Switch (unknown type)Prefixes 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:
Source: Jeff M. in PA
PS0 serves Pittsburgh Zone 2
Pittsburgh Zone 1
"Squirrel Hill"
Listing Updated:
September 2012Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPASQDS0Switch Type:
Nokia Siemens EWSDPrefixes Served:
(412) 420-2, 521Notes:
Source: Jeff M. in PA
Pittsburgh Zone 2
"Bellevue"
Listing Updated:
July 2014Operating 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:
July 2014Operating 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:
July 2014Operating 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 2014Operating 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
Pittsburgh Zone 4
"Braddock"
Listing Updated:
July 2014Operating 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:
July 2014Operating 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:
July 2014Operating 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:
July 2014Operating 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:
July 2014Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
DRMTPADODS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 306, 341, 343-4, 388, 531, 561, 563, 571-2Notes:
Source: GSV
Pittsburgh Zone 7
"Crafton"
Listing Updated:
July 2014Operating 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:
July 2014Operating 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:
July 2014Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PITBPAELDS0Switch Type:
Digital Switch (unknown type)Prefixes Served:
(412) 361-3, 365, 441, 661, 665Notes:
Source: GSV
Pittsburgh Suburban Zone 10
"Elizabeth Twp."
Listing Updated:
August 2014Operating 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:
August 2014Operating 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:
August 2014Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
WMFLPAWMDS0Switch Type:
Nokia/Alcatel/Lucent 5ESSPrefixes Served:
(412) 460, 466, 469Notes:
Source: GSV
Pittsburgh Suburban Zone 13
"Bridgeville"
Listing Updated:
August 2009Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
BGVLPABRDS0Switch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(412) 220, 221, 257, 914Notes:
Was a #5 crossbar office until the mid 1980s.
Pittsburgh Suburban Zone 14
"Carnegie"
Listing Updated:
August 2014Operating 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 16
"Sewickley"
Listing Updated:
August 2014Operating 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:
October 2005Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
PYVLPAPEDS0Switch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(412) 358, 364, 366-7, 369, 630, 635Notes:
Was a #5 crossbar office until the mid 1980s.
Pittsburgh Suburban Zone 18
"Glenshaw"
Listing Updated:
October 2005Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
GLNSPAGLDS0Switch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(412) 486, 487, 492, 961Notes:
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:
January 2006Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
DRVLPADORS0Switch Type:
Nokia/Alcatel/Lucent 5ESS RemotePrefixes Served:
(412) 767Notes:
Was a #5 crossbar office until the mid 1980s.
Pittsburgh Suburban Zone 20
"Oakmont"
Listing Updated:
August 2014Operating 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:
July 2014Operating 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:
October 2005Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
MOVLPAMODS0Switch Type:
Nokia/Alcatel/Lucent 5ESS HostPrefixes Served:
(412) 372-4, 380, 666, 856, 858Notes:
Was a #5 crossbar office until the mid 1980s.
Pittsburgh Suburban Zone 22
"Turtle Creek"
Listing Updated:
August 2014Operating Company:
Verizon/Bell Atlantic/Bell of PennsylvaniaCLLI:
TRCKPATCDS0Switch Type:
Nokia Siemens EWSDPrefixes Served:
(412) 816, 823-5, 829Notes:
Source: GSV
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