Skip to content
Ofcom data · 260 postcodes

BT26 broadband coverage — Lisburn and Castlereagh

Full-fibre, gigabit and superfast broadband availability across the BT26 postcode district, plus business broadband and leased-line options for Lisburn and Castlereagh.

Excellent coverage

Superfast (30Mb+)

98.7%

Ultrafast (300Mb+)

90.2%

Gigabit-capable

90.2%

Below USO (10Mb)

0.2%

Check broadband at your exact BT26 postcode

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

Check my postcode ›

Broadband in BT26

Broadband availability in the BT26 postcode district (Lisburn and Castlereagh) is Excellent — gigabit-capable full fibre is widely available. Across the 260 postcodes Ofcom measures in BT26, superfast broadband (30 Mbit/s or faster) reaches 98.7% of premises and gigabit-capable lines are available to 90.2%.

Around 0.2% of premises in BT26 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 BT26

PostcodeSuperfastGigabit
BT26 6AA100%100%
BT26 6AB100%91.5%
BT26 6AE100%72.2%
BT26 6AF100%100%
BT26 6AG100%82.6%
BT26 6AJ100%70%
BT26 6AL100%100%
BT26 6AN100%100%
BT26 6AP100%100%
BT26 6AQ100%100%

Business broadband & leased lines in Lisburn and Castlereagh

Whether the BT26 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 BT26

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

Get my quote ›

Nearby BT districts

BT34 — 90.2% gigabitBT23 — 92.4% gigabitBT92 — 73.4% gigabitBT47 — 81% gigabitBT35 — 84.7% gigabitBT78 — 82.7% gigabitBT48 — 90.5% gigabitBT30 — 89.8% gigabitBT71 — 87.1% gigabitBT36 — 95.9% gigabit

See all Belfast (BT) broadband coverage ›

Frequently asked questions

What broadband speeds are available in the BT26 area (Lisburn and Castlereagh)?
In the BT26 area (Lisburn and Castlereagh), superfast broadband (30 Mbit/s+) is available to approximately 98.7% of premises and gigabit-capable broadband to around 90.2%, 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 BT26 area (Lisburn and Castlereagh)?
Gigabit-capable coverage in the BT26 area (Lisburn and Castlereagh) stands at about 90.2% 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 BT26 area (Lisburn and Castlereagh)?
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 BT26 area (Lisburn and Castlereagh)?
Most UK providers serve the BT26 area (Lisburn and Castlereagh) 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.

©Connection Technologies 2026. All Rights Reserved.

Connection Technologies Limited is authorised and regulated by the Financial Conduct Authority, reference FRN 958225

Registered office: Fareham Innovation Centre, Merlin House, 4 Meteor Way, Fareham, Lee-on-the-Solent, PO13 9FU.

Registered in England and Wales, Company No. 11630924

Connect with Us

Linkedin
Sitemap