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Area Code 512
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Code 512 (Austin, Texas area).

Click on the pictures below for a larger version.


Austin

"Bee Caves"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXBCRS0

Switch Type:
Ribbon/Genband/Nortel RSC

Prefixes Served:
(512) 263, 402

Notes:
Source: GSV

 

Austin

"Bee Creek"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXBERS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(512) 264

Notes:
Source: GSV

 

Austin

"Cedar Valley"

Photo 2

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXCVDS0

Switch Type:
Ericsson AXE-10

Prefixes Served:
(512) 288, 301, 394

Notes:
Source: GSV. Photo 2: Larry P. (July 2014)

 

Austin

"Creedmore"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXCRRS0

Switch Type:
Ribbon/Genband/Nortel RSC

Prefixes Served:
(512) 243

Notes:
Source: GSV

 

Austin

"Evergreen"

Photo 2

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXEVDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(512) 247, 356, 369, 385-6, 389

Notes:
Source: GSV. Photo 2: Larry P. (July 2014)

 

Austin

"Fairfax"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXFARS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(512) 367

Notes:
Source: GSV

 

Austin

"Fireside (FI)"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXFIDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 231, 241, 338, 340, 342-6, 349, 372, 418, 425, 427, 463, 475, 502, 514, 527, 623, 794-5, 936

Notes:
Source: GSV

 

Austin

"Greenwood"

Photo 2

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXEVDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(512) 226, 232, 236, 315, 320, 322, 370, 390-1, 397, 403-4, 414, 457, 469, 471-4, 476-82, 494-5, 499, 505, 536, 542, 578, 609, 703, 708, 841, 854, 860, 867, 870, 907, 941, 972, 974, 978

Notes:
Source: GSV

 

Austin

"Hickory"

Photo 2

 

Listing Updated:
July 2014

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXHIDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS + PBX

Prefixes Served:
(512) 326, 373, 383, 416, 424, 428, 432-8, 440-8, 460, 462, 464, 486-7, 704, 707, 712, 730, 804, 912, 916

Notes:
Source: Larry P.

 

Austin

"Homestead"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXHODS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 206-7, 223-4, 302, 323-4, 371, 374, 377, 380, 406-7, 419-21, 450-4, 458-9, 465, 467, 483, 706

Notes:
Source: GSV

 

Austin

"Jollyville"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXJODS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 219, 249-50, 257-8, 331, 335-6, 378, 401, 506, 782, 918, 996

Notes:
Source: GSV

 

Austin

"Lake Travis"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXLTRS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(512) 267

Notes:
Source: GSV

 

Austin

"Lakeway"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXLWRS0

Switch Type:
Ribbon/Genband/Nortel RSC

Prefixes Served:
(512) 261, 608

Notes:
Source: GSV

 

Austin

"Manchaca"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXMCDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(512) 280, 282, 291-2

Notes:
Source: GSV

 

Austin

"Manor"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXMADS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 272, 278

Notes:
Source: GSV

 

Austin

"Marshall Ford"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXMFRS0

Switch Type:
Ribbon/Genband/Nortel RSC

Prefixes Served:
(512) 266

Notes:
Source: GSV

 

Austin

"Pflugerville"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXPFDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 251-2, 594, 670, 989-90

Notes:
Source: GSV

 

Austin

"Round Rock"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXRRDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 218, 238, 244, 246, 248, 255, 283, 310, 341, 388, 671, 716, 733, 828

Notes:
Source: GSV

 

Austin

"Tennyson"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXTEDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 239, 286, 339, 490-1, 672, 719, 821, 823, 832-9, 873, 908, 973, 977, 997

Notes:
Source: GSV

 

Austin

"Twinbrook"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXTWDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(512) 358, 891-2, 895, 899

Notes:
Source: GSV

 

Austin

"Walnut"

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
AUSTTXWADS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 223. 228, 276, 674, 919, 926-9, 933-4

Notes:
Source: GSV

 

Bastrop

Photo 2

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
BSTRTXBSDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(512) 303-4, 308, 321, 332, 549, 581

Notes:
Source: GSV. Photo 2: Larry P. (July 2014) (unsure which one is correct)

 

Bertram

 

Listing Updated:
September 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
BRTRTXXARS0

Switch Type:
Nokia/Siemens/Stromberg-Carlson DCO Remote

Prefixes Served:
(512) 355

Notes:
Source: GSV

 

Briggs

 

Listing Updated:
September 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
BRGSTXXBRL0

Switch Type:
Nokia Siemens RLS 450

Prefixes Served:
(512) 489

Notes:
So small that it doesn't even have a building. Source: GSV

 

Buchanan Dam

 

Listing Updated:
July 2013

Operating Company:
Frontier/Verizon/GTE

CLLI:
BCDMTXXADS0

Switch Type:
Nokia/Siemens/Stromberg-Carlson DCO Remote

Prefixes Served:
(512) 793

Notes:
Source: GSV

 

Buda

 

Listing Updated:
September 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
BUDATXXADS0

Switch Type:
Nokia/Siemens/Stromberg-Carlson DCO

Prefixes Served:
(512) 295, 312

Notes:
Source: GSV

 

Burnet

 

Listing Updated:
September 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
BURNTXXADS0

Switch Type:
Nokia/Siemens/Stromberg-Carlson DCO

Prefixes Served:
(512) 715, 756

Notes:
Source: GSV

 

Dale-Lytton Springs

"Dale"

 

Listing Updated:
July 2011

Operating Company:
Frontier/Verizon/GTE

CLLI:
DALETXXADS0

Switch Type:
Ribbon/Genband/Nortel DMS-10

Prefixes Served:
(512) 764

Notes:
Source: GSV

 

Dripping Springs

 

Listing Updated:
July 2014

Operating Company:
Verizon/GTE

CLLI:
DRSPTXXADS0

Switch Type:
Nokia/Siemens/Stromberg Carlson DCO

Prefixes Served:
(512) 858, 894

Notes:
Source: Larry P.

 

Elgin

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
ELGNTXELDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(512) 281, 285

Notes:
Source: GSV

 

Fentress

 

Listing Updated:
April 2011

Operating Company:
Frontier/Verizon/GTE

CLLI:
FNTRTXXARS0

Switch Type:
Ribbon/Genband/Nortel 1RC

Prefixes Served:
(512) 488

Notes:
Source: GSV

 

Georgetown

 

Listing Updated:
September 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
GRTWTXXADS0

Switch Type:
Nokia/Alcatel/Lucent/Automatic Electric GTD-5 EAX

Prefixes Served:
(512) 509, 763, 819, 863-4, 868-9, 930-1, 948

Notes:
Source: GSV

 

Granger

 

Listing Updated:
July 2013

Operating Company:
Frontier/Verizon/GTE

CLLI:
GRNGTXXADS0

Switch Type:
Ribbon/Genband/Nortel DSF

Prefixes Served:
(512) 859

Notes:
Source: GSV

 

Hutto

 

Listing Updated:
September 2021

Operating Company:
CenturyLink/Embarq/Sprint/Centel

CLLI:
HUTTTXXARP0

Switch Type:
Remote Packet (unknown type)

Prefixes Served:
(512) 759, 846

Notes:
Source: GSV

 

Jarrell

 

Listing Updated:
July 2011

Operating Company:
Frontier/Verizon/GTE

CLLI:
JRRLTXXADS0

Switch Type:
Nokia/Siemens/Stromberg-Carlson DCO

Prefixes Served:
(512) 746

Notes:
Source: GSV

 

Kempner

 

Listing Updated:
September 2021

Operating Company:
CenturyLink/Embarq/Sprint/Centel

CLLI:
KMPNTXXARS0

Switch Type:
Ribbon/Genband/Nortel RSC

Prefixes Served:
(512) 932

Notes:
Source: GSV

 

Kyle

 

Listing Updated:
September 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
KYLETXXADS0

Switch Type:
Nokia/Siemens/Stromberg-Carlson DCO

Prefixes Served:
(512) 262, 268, 405, 449

Notes:
Source: GSV

 

Lampasas

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
LMPSTXLSDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(512) 556, 564

Notes:
Source: GSV

 

Liberty Hill

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
LBHLTXLHRS0

Switch Type:
Ericsson AXE-10 Remote

Prefixes Served:
(512) 515, 778

Notes:
Source: GSV

 

Lockhart

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
LCKHTXLKDS1

Switch Type:
Ericsson AXE-10

Prefixes Served:
(512) 227, 376, 398, 620

Notes:
Source: GSV

 

Lometa

 

Listing Updated:
September 2021

Operating Company:
CenturyLink/Embarq/Sprint/Centel

CLLI:
LOMTTXXADS0

Switch Type:
Ribbon/Genband/Nortel DMS-10

Prefixes Served:
(512) 752

Notes:
Source: GSV

 

Milano

 

Listing Updated:
September 2021

Operating Company:
CenturyLink/Embarq/Sprint/Centel

CLLI:
MLANTXXARP0

Switch Type:
Remote Packet (unknown type)

Prefixes Served:
(512) 455

Notes:
Source: GSV

 

Paige

 

Listing Updated:
August 2013

Operating Company:
Frontier/Verizon/GTE

CLLI:
PAGETXXADS0

Switch Type:
Ribbon/Genband/Nortel DSF

Prefixes Served:
(512) 253

Notes:
Source: GSV

 

Rockdale

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
RCDLTXRDRS1

Switch Type:
Ribbon/Genband/Nortel RSS

Prefixes Served:
(512) 430, 446

Notes:
Source: GSV

 

San Marcos

 

Listing Updated:
September 2021

Operating Company:
CenturyLink/Embarq/Sprint/Centel

CLLI:
SMRCTXXADS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(512) 245, 353, 392-3, 395-6, 408, 558, 753-4, 805

Notes:
Source: GSV

 

Smithville

 

Listing Updated:
July 2014

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
SMVLTXSMRS0

Switch Type:
Ericsson AXE-10 Remote

Prefixes Served:
(512) 237, 360

Notes:
Source: Larry P.

 

Taylor

 

Listing Updated:
September 2021

Operating Company:
at&t/SBC/Southwestern Bell

CLLI:
TAYLTXTADS0

Switch Type:
Ericsson AXE-10

Prefixes Served:
(512) 352, 365

Notes:
Source: GSV

 

Thorndale-Thrall

 

Listing Updated:
July 2013

Operating Company:
Frontier/Verizon/GTE

CLLI:
THDLTXXADS0

Switch Type:
Ribbon/Genband/Nortel DSF

Prefixes Served:
(512) 898

Notes:
Source: GSV

 

 


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Page last modified September 5, 2021
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