Internet Providers in Portsmouth

Portsmouth has two fiber providers, Fidium Fiber and Great Works Internet. Symmetric speeds of 2,000 Mbps are available in parts of the city.

Fiber

Provider	DownDownload (Mbps)	UpUpload (Mbps)	AvailabilityCoverage
Fidium Fiber	2,000	2,000	97%
Great Works Internet	10-25	1-3	5%

Cable

Provider	DownDownload (Mbps)	UpUpload (Mbps)	AvailabilityCoverage
Xfinity	2,000	250	99%

DSL

Provider	DownDownload (Mbps)	UpUpload (Mbps)	AvailabilityCoverage
Consolidated Communications	100	40	94%

Fixed Wireless

Provider	DownDownload (Mbps)	UpUpload (Mbps)	AvailabilityCoverage
Verizon	300	20	82%
T-Mobile	100	20	99%
AT&T	100	20	93%

Next-Gen Satellite

Provider	DownDownload (Mbps)	UpUpload (Mbps)	AvailabilityCoverage
Starlink	280	30	100%

Old-School Satellite

Provider	DownDownload (Mbps)	UpUpload (Mbps)	AvailabilityCoverage
HughesNet	100	5	100%
Viasat	100	3	100%

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Low-Availability Internet Options

Provider	TechnologyTech	Download (Mbps)	Upload (Mbps)	AvailabilityCoverage
Xfinity	Fiber	2,000	250	0.3%
US Cellular	Fixed WirelessFixed Wireless	10-25	1-3	4%

Broadband Map's availability estimates are based on the census boundaries of Portsmouth. Speed metrics capture internet providers' maximum advertised speeds. Both may be overoptimistic.

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Data Sourcing

Broadband Map's listings of internet providers in Portsmouth rely primarily on the November 2025 release from the FCC's Broadband Data Collection program (representing Portsmouth ISPs' availability as of June 2025).