March 1, 2021
zipstream comporium broadband

2014

With the launch of Zipstream, Comporium becomes the first internet provider to launch 1GB service.
March 1, 2021
Citezen Telephone company

2008

Citizens Telephone Company (20,000 customers) and Sylvan Valley CATV (6,000 customers) of Brevard, N.C. are acquired.
March 1, 2021
PBT Company

2004

PBT Telecom of Gilbert, S.C. was acquired, adding customers in six Midlands counties to Comporium’s customer base.
March 1, 2021
Comporium Communications

2001

To signify the diverse services being offered, Rock Hill Telephone Company and ten affiliated businesses rebrand and reorganize to become Comporium Group.
March 1, 2021
Internet SunBelt.Net

1993

Dial-up and direct internet service arrived with the formation of SunBelt.Net, a subsidiary of Rock Hill Telephone Company that served three states.
March 1, 2021
Security Alarm Center

1987

Telewatch Security Systems is organized to provide residential and business security services.
March 1, 2021
Cable Contract Signing with TNT John Barnes Jr Ted Turner Bill Beaty

1964

Catawba Services and Video Vision were formed to provide cable television services to Rock Hill, Lancaster and Fort Lawn, respectively.
March 1, 2021
Fort hill Telephone

1947

Rock Hill Telephone acquires Fort Mill Telephone Company (established 1897) and its 293 lines.
March 1, 2021
Rock Hill Telephone acquires its initial interest in Lancaster Telephone Company

1931

Rock Hill Telephone acquires its initial interest in Lancaster Telephone Company (established 1898).
March 1, 2021
1912 EL Mary Sanders Barnes

1912

Rock Hill Telephone and its 433 lines are sold to E.L. and Mary Barnes.
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