Brightspeed: 145 E Holum St, DeForest Data Center

Distance	Site	About
2.86 miles	QTS: Vienna Expansion	Later phases of QTS Data Centers' proposed campus in the Town of Vienna, Wisconsin, withdrawn in 2026 when QTS chose a site in Iowa.
3.82 miles	QTS: Vienna, Wisconsin	QTS Data Centers proposed a large data center campus in the Town of Vienna, north of Madison, Wisconsin, in 2025. It withdrew in 2026 and chose a site in Iowa.
5.65 miles	QBE: Sun Prairie	QBE's former data center sits in Building 300 of its former General Casualty campus at 1 QBE Way in Sun Prairie, Wisconsin. QBE sold the campus in 2025, and the space is now marketed for lease.
6.70 miles	American Family Insurance: Madison HQ	American Family Insurance runs an enterprise data center at its national headquarters campus at 6000 American Parkway in Madison, Wisconsin.
7.84 miles	Verizon: 117 N Bristol St, Sun Prairie
10.01 miles	AT&T: 215 Kedzie St
11.61 miles	Lumen: 710 E Mifflin St
12.24 miles	US Signal: WI01 Madison	US Signal's WI01 data center occupies Suite 1 of the Network222 carrier hotel on Madison's Capitol Square and anchors the company's Wisconsin fiber network.
12.24 miles	Network222	Network222 is the ten-story carrier hotel at 222 West Washington Avenue on Madison's Capitol Square. It houses the 5NINES and US Signal data centers and a Madison Internet Exchange (MadIX) switch.
12.25 miles	5Nines	5NINES runs a colocation data center in Suite 170 of Network222, the carrier hotel at 222 West Washington Avenue in downtown Madison, Wisconsin. ResTech Services has owned the 5NINES data center business since October 2023.
12.27 miles	AT&T: 122 W Main St
12.59 miles	UW-Madison: DoIT Data Center	UW-Madison's DoIT data center fills the basement of the Computer Sciences and Statistics building at 1210 West Dayton Street. It hosts campus research computing and one of the two Madison Internet Exchange (MadIX) switches.
12.63 miles	T-Mobile: Madison
12.67 miles	Lumen Madison 1	Lumen Madison 1 is a Lumen colocation and network site in the Sunkist Building at 612 West Main Street in Madison, Wisconsin.
12.71 miles	AT&T: 1001 Spring St
12.89 miles	AT&T: 729 Pflaum Rd
13.33 miles	AT&T: 2802 Sylvan Ave
13.51 miles	TDS: 1912 Parmenter St, Middleton
13.82 miles	Wisconsin DET: Femrite Data Center	The Femrite Data Center at 5830 Femrite Drive in Madison is the State of Wisconsin's primary data center, run by the Department of Administration's Division of Enterprise Technology since 2006.
13.89 miles	EdgeConnex Madison	EdgeConneX's MAD01 edge data center occupies a pod in the Dane County Data Exchange I building at 4916 East Broadway in Madison, Wisconsin.
13.90 miles	Dane County Data Exchange I	Dane County Data Exchange I is a carrier-neutral data center building at 4916 East Broadway in Madison, Wisconsin, home to EdgeConneX's Madison edge data center and shell space for lease.
14.46 miles	TDS: Middleton Data Center	The former TDS Data Center occupies Suite 230 of the Wisconsin Trade Center office building at 8401 Greenway Boulevard in Middleton, Wisconsin. TDS has since left, and the landlord markets the suite for lease.
15.01 miles	SupraNet Madison	SupraNet runs a SOC 2 Type II colocation data center at 8000 Excelsior Drive on Madison's west side, serving more than 100 customers.
16.05 miles	AT&T: 2002 Reetz Rd
17.20 miles	CDW: Fitchburg	Berbee Information Networks opened its first data center in 1999 at its headquarters at 5520 Research Park Drive in Fitchburg, Wisconsin. CDW bought Berbee in 2006 and later closed the data center; Promega bought the building in 2024.
17.94 miles	US Signal: WI02 Madison	US Signal's WI02 data center at 5515 Nobel Drive in Fitchburg, just south of Madison, Wisconsin, is the largest colocation facility in the Madison market. US Signal bought it with OneNeck from TDS in 2024.

Distance

Site

About

2.86 miles

QTS: Vienna Expansion

Later phases of QTS Data Centers' proposed campus in the Town of Vienna, Wisconsin, withdrawn in 2026 when QTS chose a site in Iowa.

3.82 miles

QTS: Vienna, Wisconsin

QTS Data Centers proposed a large data center campus in the Town of Vienna, north of Madison, Wisconsin, in 2025. It withdrew in 2026 and chose a site in Iowa.

5.65 miles

QBE: Sun Prairie

QBE's former data center sits in Building 300 of its former General Casualty campus at 1 QBE Way in Sun Prairie, Wisconsin. QBE sold the campus in 2025, and the space is now marketed for lease.

6.70 miles

American Family Insurance: Madison HQ

American Family Insurance runs an enterprise data center at its national headquarters campus at 6000 American Parkway in Madison, Wisconsin.

7.84 miles

Verizon: 117 N Bristol St, Sun Prairie

10.01 miles

AT&T: 215 Kedzie St

11.61 miles

Lumen: 710 E Mifflin St

12.24 miles

US Signal: WI01 Madison

US Signal's WI01 data center occupies Suite 1 of the Network222 carrier hotel on Madison's Capitol Square and anchors the company's Wisconsin fiber network.

12.24 miles

Network222

Network222 is the ten-story carrier hotel at 222 West Washington Avenue on Madison's Capitol Square. It houses the 5NINES and US Signal data centers and a Madison Internet Exchange (MadIX) switch.

12.25 miles

5Nines

5NINES runs a colocation data center in Suite 170 of Network222, the carrier hotel at 222 West Washington Avenue in downtown Madison, Wisconsin. ResTech Services has owned the 5NINES data center business since October 2023.

12.27 miles

AT&T: 122 W Main St

12.59 miles

UW-Madison: DoIT Data Center

UW-Madison's DoIT data center fills the basement of the Computer Sciences and Statistics building at 1210 West Dayton Street. It hosts campus research computing and one of the two Madison Internet Exchange (MadIX) switches.

12.63 miles

T-Mobile: Madison

12.67 miles

Lumen Madison 1

Lumen Madison 1 is a Lumen colocation and network site in the Sunkist Building at 612 West Main Street in Madison, Wisconsin.

12.71 miles

AT&T: 1001 Spring St

12.89 miles

AT&T: 729 Pflaum Rd

13.33 miles

AT&T: 2802 Sylvan Ave

13.51 miles

TDS: 1912 Parmenter St, Middleton

13.82 miles

Wisconsin DET: Femrite Data Center

The Femrite Data Center at 5830 Femrite Drive in Madison is the State of Wisconsin's primary data center, run by the Department of Administration's Division of Enterprise Technology since 2006.

13.89 miles

EdgeConnex Madison

EdgeConneX's MAD01 edge data center occupies a pod in the Dane County Data Exchange I building at 4916 East Broadway in Madison, Wisconsin.

13.90 miles

Dane County Data Exchange I

Dane County Data Exchange I is a carrier-neutral data center building at 4916 East Broadway in Madison, Wisconsin, home to EdgeConneX's Madison edge data center and shell space for lease.

14.46 miles

TDS: Middleton Data Center

The former TDS Data Center occupies Suite 230 of the Wisconsin Trade Center office building at 8401 Greenway Boulevard in Middleton, Wisconsin. TDS has since left, and the landlord markets the suite for lease.

15.01 miles

SupraNet Madison

SupraNet runs a SOC 2 Type II colocation data center at 8000 Excelsior Drive on Madison's west side, serving more than 100 customers.

16.05 miles

AT&T: 2002 Reetz Rd

17.20 miles

CDW: Fitchburg

Berbee Information Networks opened its first data center in 1999 at its headquarters at 5520 Research Park Drive in Fitchburg, Wisconsin. CDW bought Berbee in 2006 and later closed the data center; Promega bought the building in 2024.

17.94 miles

US Signal: WI02 Madison

US Signal's WI02 data center at 5515 Nobel Drive in Fitchburg, just south of Madison, Wisconsin, is the largest colocation facility in the Madison market. US Signal bought it with OneNeck from TDS in 2024.