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Area Code 412 & 878
Telephone Central Office Building Pictures

The following are respresntative 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.


 

Elizabeth

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
ELZBPAELRS0

Switch Type:
Alcatel/Lucent 5ESS Remote

Prefixes Served:
(412) 382, 384

Notes:
Source: GSV

 

 

Pittsburgh Zone 1

"Downtown"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PITBPADTDS0
PITBPADTDS1
PITBPADTDS2
PITBPADTDS6
PITBPADT333

Switch Type:
DS0: Genband/Nortel DMS-100
DS1: Alcatel/Lucent 5ESS
DS2: Genband/Nortel DMS-100
DS6: Alcatel/Lucent 5ESS
333: Alcatel/Lucent 5ESS

Prefixes 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) 333

Notes:
The 333 switch & prefix is the "mass calling" system for TV and radio stations. Source: GSV

 

 

Pittsburgh Zone 1

"Allentown"

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PITBPAALDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 381, 390, 431-2, 481, 488

Notes:
Source: GSV

 

 

Pittsburgh Zone 1

"North Side"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PITBPANSDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 231, 237, 320-3, 330, 359, 442

Notes:
Source: GSV

 

 

Pittsburgh Zone 1

"Oakland"

Photo 2 | Photo 3

 

Listing Updated:
September 2012

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PITBPAOKDS0
PITBPAOKDS1
PITBPAOKPS0

Switch Type:
DS0: Genband/Nortel DMS-100
DS1: 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) 801

Notes:
Source: Jeff M. in PA
PS0 serves Pittsburgh Zone 2

 

 

Pittsburgh Zone 1

"Squirrel Hill"

 

Listing Updated:
September 2012

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PITBPASQDS0

Switch Type:
Nokia Siemens EWSD

Prefixes Served:
(412) 420-2, 521

Notes:
Source: Jeff M. in PA

 

 

Pittsburgh Zone 2

"Bellevue"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
BLLVPABEDS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(412) 732, 734, 761, 766

Notes:
Source: GSV

 

 

Pittsburgh Zone 2

"West View"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
WSVWPAWERS0

Switch Type:
Alcatel/Lucent 5ESS Remote

Prefixes Served:
(412) 801, 931, 939

Notes:
Source: GSV

 

 

Pittsburgh Zone 3

"Millvale"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
MLVAPAMIRS0

Switch Type:
Alcatel/Lucent 5ESS Remote

Prefixes Served:
(412) 821-2

Notes:
Source: GSV

 

 

Pittsburgh Zone 3

"Sharpsburg"

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
SHSAPASHDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 781-2, 784, 799, 963, 967-8

Notes:
Also serves parts of Pittsburgh Suburban Zone 19. Source: GSV

 

 

Pittsburgh Zone 4

"Braddock"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
BRDDPABRDS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(412) 271, 273, 351, 636

Notes:
Source: GSV

 

 

Pittsburgh Zone 4

"Wilkinsburg"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
WKBGPAWKDS0

Switch Type:
Nokia Siemens EWSD

Prefixes Served:
(412) 241-4, 247, 256, 371, 473, 731

Notes:
Source: GSV

 

 

Pittsburgh Zone 5

"Homestead"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
HMSTPAHODS0

Switch Type:
Nokia Siemens EWSD

Prefixes Served:
(412) 461-2, 464, 476

Notes:
Source: GSV

 

 

Pittsburgh Zone 6

"Carrick"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PITBPACADS0

Switch Type:
Nokia Siemens EWSD

Prefixes Served:
(412) 819, 881-2, 884-6

Notes:
Source: GSV

 

 

Pittsburgh Zone 6

"Dormont"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
DRMTPADODS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 306, 341, 343-4, 388, 531, 561, 563, 571-2

Notes:
Source: GSV

 

 

Pittsburgh Zone 7

"Crafton"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
CRAFPACRDS0

Switch Type:
Nokia Siemens EWSD

Prefixes Served:
(412) 520, 919-22, 928, 937

Notes:
Source: GSV

 

 

Pittsburgh Zone 7

"McKees Rocks"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
MCRKPAMRDS0

Switch Type:
Genband/Nortel DMS-100

Prefixes Served:
(412) 331, 771, 777-8

Notes:
Source: GSV

 

 

Pittsburgh Zone 8

"East Liberty"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PITBPAELDS0

Switch Type:
Digital Switch (unknown type)

Prefixes Served:
(412) 361-3, 365, 441, 661, 665

Notes:
Source: GSV

 

 

Pittsburgh Suburban Zone 10

"Elizabeth Twp."

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
ELZTPAETDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 751, 754

Notes:
Source: GSV

 

 

Pittsburgh Suburban Zone 10

"McKeesport"

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
MCPTPAMKDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 664, 672-3, 675, 678

Notes:
Source: GSV

 

 

Pittsburgh Suburban Zone 10

"West Mifflin"

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
WMFLPAWMDS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 460, 466, 469

Notes:
Source: GSV

 

 

Pittsburgh Suburban Zone 13

"Bridgeville"

Photo 2

 

Listing Updated:
August 2009

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
BGVLPABRDS0

Switch Type:
Alcatel/Lucent 5ESS Host

Prefixes Served:
(412) 220, 221, 257, 914

Notes:
Was a #5 crossbar office until the mid 1980s.

 

 

Pittsburgh Suburban Zone 14

"Carnegie"

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
CARNPACADS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 276, 278-9, 429, 923

Notes:
Source: GSV

 

 

Pittsburgh Suburban Zone 16

"Sewickley"

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
SWKYPASERS1

Switch Type:
Alcatel/Lucent 5ESS Remote

Prefixes Served:
(412) 741, 749

Notes:
Source: GSV

 

 

Pittsburgh Suburban Zone 17

"Perrysville"

Listing Updated:
October 2005

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PYVLPAPEDS0

Switch Type:
Alcatel/Lucent 5ESS Host

Prefixes Served:
(412) 358, 364, 366-7, 369, 630, 635

Notes:
Was a #5 crossbar office until the mid 1980s.

 

Pittsburgh Suburban Zone 18

"Glenshaw"

Photo 2

Listing Updated:
October 2005

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
GLNSPAGLDS0

Switch Type:
Alcatel/Lucent 5ESS Host

Prefixes Served:
(412) 486, 487, 492, 961

Notes:
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 2006

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
DRVLPADORS0

Switch Type:
Alcatel/Lucent 5ESS Remote

Prefixes Served:
(412) 767

Notes:
Was a #5 crossbar office until the mid 1980s.

 

 

Pittsburgh Suburban Zone 20

"Oakmont"

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
OKMTPAOADS0

Switch Type:
Alcatel/Lucent 5ESS

Prefixes Served:
(412) 820, 826, 828

Notes:
Source: GSV

 

 

Pittsburgh Suburban Zone 21

"Penn Hills"

 

Listing Updated:
July 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
PEHLPAPHDS0

Switch Type:
Nokia Siemens EWSD

Prefixes Served:
(412) 793, 795, 798
 

Notes:
Source: GSV

 

Pittsburgh Suburban Zone 22

"Monroeville"

Listing Updated:
October 2005

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
MOVLPAMODS0

Switch Type:
Alcatel/Lucent 5ESS Host

Prefixes Served:
(412) 372-4, 380, 666, 856, 858

Notes:
Was a #5 crossbar office until the mid 1980s.

 

 

Pittsburgh Suburban Zone 22

"Turtle Creek"

 

Listing Updated:
August 2014

Operating Company:
Verizon/Bell Atlantic/Bell of Pennsylvania

CLLI:
TRCKPATCDS0

Switch Type:
Nokia Siemens EWSD

Prefixes Served:
(412) 816, 823-5, 829

Notes:
Source: GSV

 

 


Copyright 2014 Telephone Central Office Building Pictures
Page last modified August 15, 2014
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