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Area Code 309
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Code 309 (Illinois).

Click on the pictures below for a larger version.


Aledo
 

Listing Updated:
February 2021

Operating Company:
Frontier/Citizens

CLLI:
ALEDILXDDS0

Switch Type:
Nokia/Siemens/Stromberg-Carlson DCO

Prefixes Served:
(309) 582

Notes:
Source: GSV

 

Bloomington

"Main"
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
BLTNILXDDS0

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

Prefixes Served:
(309) 556-7, 766, 820-1, 823, 827-9, 994

Notes:
Source: GSV

 

Bloomington

"East"
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
BLTNILXTDS0

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

Prefixes Served:
(309) 661-5

Notes:
Source: GSV

 

Bloomington

"Normal"
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
BLTNILXNDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 268, 443-4, 436, 438, 451-2, 454, 622, 735, 763, 862, 888

Notes:
Source: GSV

 

Canton

"Main"
 

Listing Updated:
February 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
CNTNILCNDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(309) 647, 649

Notes:
Source: GSV

 

Chillicothe
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
CHLCILXDDS0

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

Prefixes Served:
(309) 274

Notes:
Source: GSV

 

Dunlap
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
DNLPILXDDS0

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

Prefixes Served:
(309) 243

Notes:
Source: GSV

 

East Moline

"Main"
 

Listing Updated:
February 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
EMLNILEMDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 751-2, 755

Notes:
Source: GSV

 

East Moline

"Green Rock"
 

Listing Updated:
May 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
GRRKILESDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 748-9, 765, 792, 796

Notes:
Source: Ryan C.
Photographers note:
Not only does this central office serve my home, it serves the John Deere World Headquarters. I was told I was very lucky to be served by this CO, as it was always the first to get upgrades due to it serving the headquarters! Brick inscription on building reads 1962.

 

Eureka
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
EURKILXDDS0

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

Prefixes Served:
(309) 304, 467

Notes:
Source: GSV

 

Farmer City
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
FMCYILXDDS0

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

Prefixes Served:
(309) 928

Notes:
Source: GSV

 

Galesburg

"XD"
 

Listing Updated:
February 2021

Operating Company:
CenturyLink/CenturyTel/Gallatin River Communications

CLLI:
GLBGILXDDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100/200

Prefixes Served:
(309) 341-3, 345
 

Notes:
Source: GSV

 

Galva
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
GALVILXDDS0

Switch Type:
Nokia/Siemens/Stromberg-Carlson DCO

Prefixes Served:
(309) 932

Notes:
Source: GSV

 

Geneseo
 

Listing Updated:
February 2021

Operating Company:
Geneseo Communications

CLLI:
GENSILXDDS1

Switch Type:
Ribbon/Genband/Nortel DMS-500

Prefixes Served:
(309) 441, 944-6, 949

Notes:
Source: GSV

 

Kewanee
 

Listing Updated:
March 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
KEWNILXDDS0

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

Prefixes Served:
(309) 852-4, 856

Notes:
Source: Ryan C.

 

Macomb
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
MCMBILXDDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100/200

Prefixes Served:
(309) 298, 833, 836-7

Notes:
Source: GSV

 

Moline

"Main"
 

Listing Updated:
February 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
MOLNILMLDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 524, 736, 743, 757, 762, 764, 797

Notes:
Source: GSV

 

Monmouth
 

Listing Updated:
February 2021

Operating Company:
Frontier/Citizens

CLLI:
MNMOILXDDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 457, 734

Notes:
Source: GSV

 

Morton
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
MRTNILXDDS2

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(309) 263, 266, 284, 866

Notes:
Source: GSV

 

Pekin
 

Listing Updated:
February 2021

Operating Company:
CenturyLink/CenturyTel/Gallatin River Communications

CLLI:
PEKNILXDDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 346-7, 353, 447-8, 885

Notes:
Source: GSV

 

Peoria

"Bluffs"
 

Listing Updated:
February 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
PEORILPBDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 566, 679, 681-2, 685-8

Notes:
Source: GSV

 

Peoria

"East"
 

Listing Updated:
February 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
EPERILPEDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 427, 694, 698-9

Notes:
Source: GSV

 

Peoria

"Jefferson"
 

Listing Updated:
February 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
PEORILPJDS1

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 494-5, 497, 624, 636, 637, 655, 669, 671-7, 680, 992, 999

Notes:
Source: GSV

 

Peoria

"North"
 

Listing Updated:
February 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
PEORILPNDS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(309) 589, 683, 690-3

Notes:
Source: GSV

 

Port Byron
 

Listing Updated:
February 2021

Operating Company:
Frontier/Citizens

CLLI:
PTBYILXDDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 523

Notes:
Source: GSV

 

Rock Island

"Main"
 

Listing Updated:
February 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
RCISILRIDS1

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(309) 206, 558, 732, 779, 786, 788, 793-4

Notes:
Source: GSV

 

Rock Island

"Milan"
 

Listing Updated:
January 2021

Operating Company:
at&t/SBC/Ameritech/Illinois Bell

CLLI:
MILNILMIDS0

Switch Type:
Nokia/Siemens EWSD DE5 RCU

Prefixes Served:
(309) 756, 787

Notes:
Source: Ryan C.

 

Sunnyland
 

Listing Updated:
February 2021

Operating Company:
Frontier/Verizon/GTE

CLLI:
SNLDILXDDS0

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

Prefixes Served:
(309) 745, 819

Notes:
Source: GSV

 

 


Copyright 2021 Telephone Central Office Building Pictures
Page last modified May 15, 2021
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