Ofcom data · 525 postcodes

TS21 broadband coverage — County Durham

Full-fibre, gigabit and superfast broadband availability across the TS21 postcode district, plus business broadband and leased-line options for County Durham.

Mixed coverage

Superfast (30Mb+)

72.2%

Ultrafast (300Mb+)

5.6%

Gigabit-capable

5.6%

Below USO (10Mb)

Check broadband at your exact TS21 postcode

District figures are an average — get the precise availability, full-fibre status and mobile signal for your address.

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Broadband in TS21

Broadband availability in the TS21 postcode district (County Durham) is Mixed — superfast is available to many but not all premises. Across the 525 postcodes Ofcom measures in TS21, superfast broadband (30 Mbit/s or faster) reaches 72.2% of premises and gigabit-capable lines are available to 5.6%.

Around 1% of premises in TS21 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in TS21

Postcode	Superfast	Gigabit
TS21 1AA	100%	0%
TS21 1AB	100%	33.3%
TS21 1AD	0%	0%
TS21 1AE	0%	0%
TS21 1AF	100%	0%
TS21 1AG	0%	0%
TS21 1AH	0%	0%
TS21 1AJ	0%	0%
TS21 1AN	100%	0%
TS21 1AR	0%	0%

Business broadband & leased lines in County Durham

Whether the TS21 district has full fibre yet or not, we can connect your business. Where FTTP and gigabit are live we quote ultrafast full-fibre; where they aren't, a leased line still delivers guaranteed, symmetric speeds with an SLA. We also handle mobile coverage and VoIP for the same site.

Get a business broadband quote for TS21

Free, no obligation — full fibre, leased line or FTTC, matched to what's actually available at your postcode.

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Nearby TS districts

TS10 — 94.8% gigabit TS25 — 93.7% gigabit TS17 — 89.7% gigabit TS5 — 94.9% gigabit TS19 — 96.1% gigabit TS6 — 91.2% gigabit TS3 — 95.6% gigabit TS18 — 83.1% gigabit TS23 — 90.1% gigabit TS24 — 91.4% gigabit

See all Cleveland (TS) broadband coverage ›

Frequently asked questions

What broadband speeds are available in the TS21 area (County Durham)?

In the TS21 area (County Durham), superfast broadband (30 Mbit/s+) is available to approximately 72.2% of premises and gigabit-capable broadband to around 5.6%, based on Ofcom Connected Nations data. Exact availability varies by postcode — enter your full postcode in our checker for a precise result.

Can I get full-fibre or gigabit broadband in the TS21 area (County Durham)?

Gigabit-capable coverage in the TS21 area (County Durham) stands at about 5.6% of premises. Where gigabit and full-fibre (FTTP) are live, businesses can order symmetric, low-latency connections — ideal for cloud, VoIP and multi-site working. If full fibre hasn't reached your premises yet, a leased line can still deliver guaranteed gigabit speeds.

How do I check broadband at my exact address in the TS21 area (County Durham)?

Use the free broadband postcode checker on this page: enter your postcode to see fixed-broadband availability, gigabit/full-fibre coverage and mobile signal for all four networks at that location, sourced from official Ofcom data.

Who provides business broadband in the TS21 area (County Durham)?

Most UK providers serve the TS21 area (County Durham) over the Openreach and (where present) CityFibre or Virgin Media networks. Connection Technologies arranges business broadband, full-fibre (FTTP) and leased lines across the area — request a quote to compare options for your postcode.

Broadband availability data © 2026 Ofcom (Connected Nations), licensed under the Open Government Licence v3.0. Figures are area averages and predictions; availability at an individual address may differ — always confirm with a postcode-level check.