Belfast broadband coverage (BT)
Full-fibre, gigabit and superfast availability across every BT postcode district in Northern Ireland — plus business broadband and leased lines.
Excellent coverage
Superfast (30Mb+)
95.6%
Ultrafast (300Mb+)
87.6%
Gigabit-capable
87.6%
Below USO (10Mb)
—
Check your exact BT postcode
Area figures average a whole postcode region — get the precise availability, full-fibre status and mobile signal for your address.
Broadband across the BT area
The BT postcode area covers Belfast and the surrounding Northern Ireland region, spanning 80 outward-code districts. Overall fixed-broadband provision across BT is excellent: superfast reaches about 95.6% of premises and gigabit-capable connectivity is available to roughly 87.6%.
Availability is never uniform across a whole postcode area — city-centre BT districts are typically further ahead on full fibre than outlying towns and rural fringes. Use the district breakdown below to see how each BT outcode compares, then check an exact postcode for the definitive answer.
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BT districts compared
Each BT outward code ranked by size. Click a district for its full breakdown and a postcode-level check.
| District | Area | Superfast | Gigabit |
|---|---|---|---|
| BT34 | Armagh City, Banbridge and Craigavon | 96.7% | 90.2% |
| BT23 | Ards and North Down | 98.4% | 92.4% |
| BT92 | Fermanagh and Omagh | 85.2% | 73.4% |
| BT47 | Causeway Coast and Glens | 87.3% | 81% |
| BT35 | Armagh City, Banbridge and Craigavon | 94.6% | 84.7% |
| BT78 | Derry City and Strabane | 92.3% | 82.7% |
| BT48 | Derry City and Strabane | 98% | 90.5% |
| BT30 | Ards and North Down | 97.3% | 89.8% |
| BT71 | Armagh City, Banbridge and Craigavon | 97.3% | 87.1% |
| BT36 | Antrim and Newtownabbey | 99.5% | 95.9% |
| BT45 | Mid Ulster | 96.2% | 87.6% |
| BT41 | Antrim and Newtownabbey | 97.7% | 88.9% |
| BT28 | Lisburn and Castlereagh | 98.8% | 92.5% |
| BT60 | Armagh City, Banbridge and Craigavon | 95% | 83.2% |
| BT79 | Derry City and Strabane | 94.2% | 86% |
| BT94 | Fermanagh and Omagh | 88.1% | 72.6% |
| BT38 | Antrim and Newtownabbey | 99% | 94.2% |
| BT93 | Fermanagh and Omagh | 81.6% | 73.9% |
| BT19 | Ards and North Down | 99.7% | 96.7% |
| BT5 | Belfast | 99.1% | 95.2% |
| BT42 | Antrim and Newtownabbey | 97.4% | 89.7% |
| BT51 | Causeway Coast and Glens | 94.4% | 80.1% |
| BT66 | Armagh City, Banbridge and Craigavon | 98.6% | 90.5% |
| BT62 | Armagh City, Banbridge and Craigavon | 98.1% | 85.8% |
| BT53 | Causeway Coast and Glens | 96.6% | 84.5% |
| BT74 | Fermanagh and Omagh | 92.7% | 75.6% |
| BT40 | Mid and East Antrim | 91.9% | 83.8% |
| BT32 | Armagh City, Banbridge and Craigavon | 95.3% | 88.3% |
| BT44 | Causeway Coast and Glens | 95.7% | 84.2% |
| BT82 | Derry City and Strabane | 96.7% | 85.8% |
| BT20 | Ards and North Down | 100% | 92.8% |
| BT80 | Mid Ulster | 96.5% | 88.8% |
| BT70 | Fermanagh and Omagh | 94.1% | 83.9% |
| BT8 | Belfast | 98% | 91.1% |
| BT14 | Antrim and Newtownabbey | 99.4% | 96.8% |
| BT39 | Antrim and Newtownabbey | 98.1% | 93.5% |
| BT4 | Belfast | 97.2% | 93.1% |
| BT12 | Belfast | 98.2% | 91.4% |
| BT15 | Belfast | 98.7% | 95.3% |
| BT37 | Antrim and Newtownabbey | 99.8% | 96.8% |
| BT9 | Belfast | 98.6% | 95.2% |
| BT22 | Ards and North Down | 98% | 93.2% |
| BT27 | Lisburn and Castlereagh | 98.7% | 93.4% |
| BT43 | Mid and East Antrim | 98.5% | 90.8% |
| BT13 | Belfast | 98.3% | 96% |
| BT6 | Belfast | 99.7% | 95.9% |
| BT17 | Belfast | 99.6% | 93.4% |
| BT24 | Ards and North Down | 96% | 86.1% |
| BT63 | Armagh City, Banbridge and Craigavon | 98.7% | 90.9% |
| BT67 | Armagh City, Banbridge and Craigavon | 97.5% | 90.6% |
| BT61 | Armagh City, Banbridge and Craigavon | 98.3% | 83.7% |
| BT11 | Belfast | 99.9% | 97.5% |
| BT49 | Causeway Coast and Glens | 86.8% | 76.1% |
| BT52 | Causeway Coast and Glens | 98.9% | 96% |
| BT25 | Armagh City, Banbridge and Craigavon | 97.4% | 90.5% |
| BT7 | Belfast | 96.6% | 91.9% |
| BT16 | Ards and North Down | 99.1% | 96.7% |
| BT18 | Ards and North Down | 99.6% | 90.4% |
| BT1 | Belfast | 82.9% | 70.9% |
| BT29 | Antrim and Newtownabbey | 97.9% | 88.2% |
| BT46 | Causeway Coast and Glens | 95.7% | 79.1% |
| BT33 | Newry, Mourne and Down | 98.9% | 93.5% |
| BT55 | Causeway Coast and Glens | 99.8% | 95.4% |
| BT81 | Derry City and Strabane | 93.8% | 89.1% |
| BT31 | Armagh City, Banbridge and Craigavon | 95.6% | 87.3% |
| BT26 | Lisburn and Castlereagh | 98.7% | 90.2% |
| BT54 | Causeway Coast and Glens | 95.7% | 81.3% |
| BT56 | Causeway Coast and Glens | 99.5% | 91.2% |
| BT21 | Ards and North Down | 98.6% | 89.7% |
| BT10 | Belfast | 99.8% | 95.8% |
| BT57 | Causeway Coast and Glens | 78.6% | 64% |
| BT75 | Fermanagh and Omagh | 92.4% | 89% |
| BT65 | Armagh City, Banbridge and Craigavon | 98.3% | 84.6% |
| BT2 | Belfast | 94.2% | 90% |
| BT69 | Mid Ulster | 94.7% | 83% |
| BT3 | Belfast | 82.8% | 63.9% |
| BT76 | Fermanagh and Omagh | 82.6% | 76.5% |
| BT68 | Mid Ulster | 95.2% | 93.1% |
| BT77 | Mid Ulster | 80.9% | 74.2% |
| BT64 | Armagh City, Banbridge and Craigavon | 96.2% | 76% |
Business broadband & leased lines in Belfast
Connection Technologies arranges business broadband, full-fibre (FTTP) and leased lines right across the BT area. Where gigabit full fibre is live we quote ultrafast symmetric connections; everywhere else a leased line still guarantees the speed and SLA your business needs.
Get a business broadband quote in Belfast
Free and no obligation — matched to what's actually available at your postcode.
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Frequently asked questions
What broadband speeds are available in the BT postcode area (Belfast)?
Can I get full-fibre or gigabit broadband in the BT postcode area (Belfast)?
How do I check broadband at my exact address in the BT postcode area (Belfast)?
Who provides business broadband in the BT postcode area (Belfast)?
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.