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Area Code 605
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Code 605 (South Dakota).

Click on the pictures below for a larger version.


Aberdeen

Listing Updated:
January 2011

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
ABRDSDCODS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 225-6, 229, 377, 622, 626

Notes:
Source: B. Mitchell

 

Belle Fourche

Listing Updated:
September 2012

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
BLFRSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(307) 896
(605) 892

Notes:
Also serves West Belle Fourche, WY.
Source: B. Mitchell

 

Bridgewater

Listing Updated:
May 2021

Operating Company:
Golden West Telecom/Armour Independent Telephone Company

CLLI:
BRWRSDXADS1

Switch Type:
Mitel GX5000

Prefixes Served:
(605) 296, 724, 729

Notes:
Serves multiple ratecenters. Source: GSV

 

Brookings

"XC" (4th Street)

Listing Updated:
May 2021

Operating Company:
Swiftel Communications/Brookings Municipal Utilities

CLLI:
BKNGSDXC69G

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

Prefixes Served:
(605) 688, 692, 697

Notes:
Source: GSV

 

Brookings

XE (Yorkshire Dr.)

Listing Updated:
May 2021

Operating Company:
Swiftel Communications/Brookings Municipal Utilities

CLLI:
BKNGSDXERS3

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(605) 696

Notes:
Source: GSV

 

Custer

Photo 2

Listing Updated:
May 2017

Operating Company:
Golden West Telephone Company/Vivian Telephone Company

CLLI:
(was CSTRSDXADS1)

Switch Type:
Ribbon/Genband/Nortel DMS-10 Host

Prefixes Served:
(605) 673

Notes:
Photo 2 source: B. Mitchell (September 2012)

 

Dell Rapids

Listing Updated:
May 2021

Operating Company:
Golden West Telecom/Sioux Valley Telephone

CLLI:
DLRPSDXADS1

Switch Type:
Ribbon/Genband/Nortel CS 1500

Prefixes Served:
(605) 363, 428, 446, 942, 946

Notes:
Serves multiple ratecenters. Source: GSV

 

Freeman

Listing Updated:
May 2021

Operating Company:
Golden West Telecom/Vivian Telephone Company

CLLI:
FRMNSDXADS0

Switch Type:
Ribbon/Genband/Nortel CS 1500

Prefixes Served:
(605) 286, 364, 369, 387, 583, 648, 925

Notes:
Serves multiple ratecenters. Source: GSV

 

Gettysburg

Listing Updated:
May 2020

Operating Company:
Venture Communications Cooperative

CLLI:
(was GTBGSDXADS0)

Switch Type:
Ribbon/Genband/Nortel CS1500 remote

Prefixes Served:
(605) 765

Notes:
This CO was originally a DMS-10, but the whole small phone company has been upgraded to a CS 1500 packet switch in the main town of Onida. Source: B. Mitchell

 

Hartford

Listing Updated:
May 2021

Operating Company:
Golden West Telecom/Union Telephone Company

CLLI:
HRFRSDXADS1

Switch Type:
Ribbon/Genband/Nortel CS 1500

Prefixes Served:
(605) 526, 528

Notes:
Source: GSV

 

Hermosa

Photo 2

Listing Updated:
November 2010

Operating Company:
Ft. Randall Telephone dba Mt. Rushmore Telephone

CLLI:
HRMSSDXARS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605)  255

Notes:
Photo 2 is the sign showing the company ownership. Source: B. Mitchell

 

Highmore

Photo 2

Listing Updated:
January 2012

Operating Company:
Venture Telephone Co-op/Sully Buttes Telephone Co-op

CLLI:
HGHMSDXADS1

Switch Type:
Ribbon/Genband/Nortel CS 1500

Prefixes Served:
(605)  258, 264, 285, 287, 324, 392, 436, 442, 447, 598, 649, 765, 768, 852, 875, 943, 948, 962, 973

Notes:
Serves multiple ratecenters. Source: B. Mitchell

 

Hill City

Listing Updated:
June 2010

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
HLCYSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605)  574

Notes:
Source: B. Mitchell

 

Hot Springs

Listing Updated:
September 2012

Operating Company:
Golden West Telephone Co.

CLLI:
HTSPSDXADS1
HTSPSDXADS2

Switch Type:
DS1: Ribbon/Genband/Nortel CS 1500
DS2: Ribbon/Genband/Nortel CS 1500

Prefixes Served:
DS1: (307) 663
(308) 453, 525
(605) 424, 459, 535, 662, 745, 833

DS2: (605) 673

Notes:
Serves multiple ratecenters. Source: B. Mitchell

 

Huron

Listing Updated:
May 2021

Operating Company:
CenturyLink/Qwest/US West/Mountain Bell

CLLI:
HURNSDCODS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(605) 352-3

Notes:
Source: GSV

 

Keystone

Listing Updated:
November 2010

Operating Company:
Ft. Randall Telephone dba Mt. Rushmore Telephone

CLLI:
KYSTSDXADS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(605) 666

Notes:
Source: B. Mitchell

 

Kimball

Listing Updated:
May 2021

Operating Company:
Midstate Communications

CLLI:
KMBLSDXADS2

Switch Type:
Metaswitch VP3510

Prefixes Served:
(605) 234, 243, 245, 249, 293, 337, 726, 732, 778-9, 894

Notes:
Serves multiple ratecenters. Source: GSV

 

Midland

Listing Updated:
January 2011

Operating Company:
Golden West Telephone Cooperative

CLLI:
(was MDLDSDXARS2)

Switch Type:
Ribbon/Genband/Nortel DMS-10 RLCM

Prefixes Served:
(605) 843

Notes:
Source: B. Mitchell

 

Miller

Listing Updated:
January 2011

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
MLLRSDCORS1

Switch Type:
Ericsson AXE-10 Remote

Prefixes Served:
(605) 853

Notes:
Source: B. Mitchell

 

New Effington

Listing Updated:
May 2021

Operating Company:
RC Technologies

CLLI:
NWEFSDXADS1

Switch Type:
Ribbon/Genband/Nortel CS 1500

Prefixes Served:
(605) 398, 637, 652, 738, 932, 938
(701) 634, 736

Notes:
Serves multiple ratecenters. Source: GSV

 

Philip

Listing Updated:
January 2011

Operating Company:
Golden State Telephone Cooperative

CLLI:
(was PHLPSDXADS1)

Switch Type:
Ribbon/Genband/Nortel DMS-10 Host

Prefixes Served:
(605) 859

Notes:
Source: B. Mitchell

 

Pierre

"Main"

Listing Updated:
May 2021

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
PIRRSDCODS6

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(605) 224, 773, 776, 945

Notes:
Source: GSV

 

Pierre

"Fort Pierre"

Listing Updated:
January 2011

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
FTPRSDCERS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 223

Notes:
Source: B. Mitchell

 

Rapid City

"Main"

Photo 2 | Photo 3

Listing Updated:
August 2010

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
RPCYSDCODS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Host & Tandem

Prefixes Served:
(605) 341-3, 348, 355, 388, 394, 399, 727, 737, 877

Notes:
Photos 2 and 3 are of the microwave tower that had a torn cover at the time of the photo (since repaired).

 

Rapid City

"Blackhawk"

Listing Updated:
July 2020

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
BLHKSDCERS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 786-7

Notes:
Source: B. Mitchell

 

Rapid City

"Rapid Valley"

Listing Updated:
May 2021

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
RPVYSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 393

Notes:
Source: GSV

 

Redfield

Listing Updated:
May 2021

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
RDFDSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 472

Notes:
Source: GSV

 

Salem

Listing Updated:
May 2021

Operating Company:
TrioTel Communications

CLLI:
SALMSDXADS2

Switch Type:
CopperCom CSX 2100 Media Gateway

Prefixes Served:
(605) 239, 246-7, 425, 449, 485, 523, 825

Notes:
Serves multiple ratecenters. Source: GSV

 

 

Sioux Falls

"Main"

Photo 2

 

Listing Updated:
August 2010

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
DS0: SXFLSDCODS0
DS1: SXFLSDCODS1
DS2: SXFLSDCODS2

Switch Type:
DS0: Ericsson AXE10 (host only)
DS1: Nokia/Alcatel/Lucent 5ESS (host/tandem)
DS2: Nokia/Alcatel/Lucent 5ESS (local end office)

Prefixes Served:
DS2: (605)  312, 322, 320, 330-6, 338-9, 357, 367, 373, 575, 731, 782, 977-8, 988

Notes:
This particular office has three switches. DS0 is an Ericsson AXE10 host/tandem but does not serve any local prefixes. DS1 is a 5ESS host/tandem and it does not serve any local prefixes. The DS2 is also a 5ESS but this is a local end office.

 

Sioux Falls

"Southeast"

Listing Updated:
August 2011

Operating Company:
CenturyLink/Qwest/US West/Mountain Bell

CLLI:
SXFLSDSERS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 371

Notes:
Source: GSV

 

Sioux Falls

"Southwest"

Listing Updated:
May 2021

Operating Company:
CenturyLink/Qwest/US West/Mountain Bell

CLLI:
SXFLSDSWDS0

Switch Type:
Ribbon/Genband/Nortel DMS-100

Prefixes Served:
(605) 323, 361-2

Notes:
Source: GSV

 

Spearfish

"Main"

Listing Updated:
January 2012

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
SPRFSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(307) 643
(605) 642, 644

Notes:
Also serves West Spearfish, WY.
Source: B. Mitchell

 

Spearfish

"Deadwood"

Photo 2

Listing Updated:
June 2020

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
DDWDSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 578

Notes:
Source: B. Mitchell. Photo 2 by the CO Building webmaster in May 2017.

 

Spearfish

"Lead"

Listing Updated:
September 2012

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
LEADSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 584

Notes:
Source: B. Mitchell

 

Spearfish

"Whitewood"

Listing Updated:
November 2011

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
WHWDSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 269

Notes:
Source: B. Mitchell

 

Sturgis

Listing Updated:
May 2017

Operating Company:
CenturyLink/Qwest/US West/Northwestern Bell

CLLI:
STRGSDCORS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS Remote

Prefixes Served:
(605) 347, 423

Notes:
 

 

Vermillion

Listing Updated:
May 2021

Operating Company:
CenturyLink/Qwest/US West/Mountain Bell

CLLI:
VRMLSDCODS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(605) 624, 638, 677

Notes:
Source: GSV

 

Wall

Listing Updated:
May 2021

Operating Company:
Golden West Telecommunications

CLLI:
WALLSDXADS1

Switch Type:
Ribbon/Genband/Nortel CS 1500

Prefixes Served:
(605) 279, 386, 457, 798, 993

Notes:
Serves multiple rateceners. Source: GSV

 

Watertown

Listing Updated:
May 2021

Operating Company:
CenturyLink/Qwest/US West/Mountain Bell

CLLI:
WTTWSDCODS0

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(605) 882, 884, 886

Notes:
Source: GSV

 

Winner

Listing Updated:
May 2021

Operating Company:
Golden West Telecom/Vivian Telephone Company

CLLI:
WNNRSDXADS1

Switch Type:
Ribbon/Genband/Nortel CS 1500

Prefixes Served:
(402) 653, 774, 974
(605) 473, 557, 654, 669, 683, 747, 775, 835, 842, 856, 879

Notes:
Serves multiple ratecenters. Source: GSV

 

Yankton

Listing Updated:
May 2021

Operating Company:
CenturyLink/Qwest/US West/Mountain Bell

CLLI:
YNTNSDCODS1

Switch Type:
Nokia/Alcatel/Lucent 5ESS

Prefixes Served:
(402) 667
(605) 655, 665, 668

Notes:
Source: GSV

 

 


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Page last modified May 27, 2021
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