4 towns · Updated October, 2026
Broadband Deals in Belfast
01Live comparison
Best Broadband Offers in Belfast October, 2026
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Belfast is a council district of Northern Ireland. It has 7,016 live residential postcodes, and 15 postcode districts lie mainly within it (ONS Postcode Directory, May 2025). Four of its towns have their own broadband page: Belfast, Dunmurry, Gilnahirk and Mount Vernon.
Enter your postcode in the comparison above to see the broadband deals available at your address.
Broadband deals by town in Belfast
Each town page has the live comparison and lists the postcodes it covers.
-
Belfast
- Postcode districts
- BT1, BT4 (part), BT5 (part), BT6 (part), BT7, BT9 (part), BT12, BT13, BT14 (part), BT15 (part)
- Live residential postcodes
- 3,844
- Gigabit-capable
- 94.5% of premises
-
Dunmurry
- Postcode districts
- BT8 (part), BT9 (part), BT10, BT11, BT17 (part)
- Live residential postcodes
- 1,311
- Gigabit-capable
- 97% of premises
-
Gilnahirk
- Postcode districts
- BT4 (part), BT5 (part), BT6 (part)
- Live residential postcodes
- 896
- Gigabit-capable
- 97.5% of premises
-
Mount Vernon
- Postcode districts
- BT3 (part), BT14 (part), BT15 (part), BT36 (part)
- Live residential postcodes
- 965
- Gigabit-capable
- 96.9% of premises
Postcode districts in Belfast
These 15 postcode districts have at least half of their live residential postcodes in Belfast. Enter your full postcode in the comparison to see the deals for your address.
- BT1
- BT2
- BT3
- BT4
- BT5
- BT6
- BT7
- BT9
- BT10
- BT11
- BT12
- BT13
- BT14
- BT15
- BT17
Sources: ONS Postcode Directory, May 2025 (postcode districts, postcodes and councils); Ofcom Connected Nations, January 2026 (gigabit-capable broadband).
Belfast broadband FAQs
Still unsure? Call us on 01483 355354 or send us a message.
Which towns in Belfast have their own broadband page?
Four towns in Belfast have their own broadband page on Switch My Broadband: Belfast, Dunmurry, Gilnahirk and Mount Vernon. Enter your postcode in the comparison on this page to see the deals available at your address.
Which postcode districts are in Belfast?
15 postcode districts have at least half of their live residential postcodes in Belfast: BT1, BT2, BT3, BT4, BT5, BT6, BT7, BT9, BT10, BT11, BT12, BT13, BT14, BT15 and BT17. Source: ONS Postcode Directory, May 2025.
Which council covers Belfast?
All 7,016 live residential postcodes in Belfast are in the Belfast council area. Source: ONS Postcode Directory, May 2025.
Can I get full fibre in Belfast?
92.3% of premises in Belfast (161,063 of 174,558) could get full fibre, compared with 81% across the UK. Whether your home can get it depends on your address: enter your postcode in the comparison on this page to see the deals available there. Source: Ofcom Connected Nations, January 2026.
How many homes and businesses in Belfast can get gigabit broadband?
167,000 premises in Belfast (95.7% of 174,558) could get gigabit-capable broadband, with download speeds of 1 Gbit/s or more; across the UK the figure is 87.8%. Source: Ofcom Connected Nations, January 2026.
Also in Northern Ireland
Part of Northern Ireland All areas: Broadband deals by area
Belfast on the map
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