BT4 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 615 postcodes across 3 sectors in Belfast.
Full fibre
0%
Gigabit
93%
Superfast
98%
Postcodes
615
Belfast's BT4 postcode covers 615 postcodes across the city. Cable networks deliver gigabit connectivity to nearly 93% of premises, with superfast speeds available everywhere.
Broadband speeds in BT4
Share of BT4 premises by the fastest download speed available, averaged across all 615 postcodes in the district.
Gigabit speeds reach 92.8% of postcodes in BT4, almost entirely delivered via cable infrastructure. Another 4.7% can access speeds between 30 and 300 Mbps, which exceeds the UK average download speed of around 75 Mbps. Below-10Mbps postcodes account for just 0.6%, suggesting fewer than four locations face basic broadband constraints. The speed distribution is heavily skewed toward gigabit capacity. Cable networks dominate BT4's connectivity area. This concentration at the top tier means household users rarely face bandwidth limitations, whether for multiple simultaneous video calls, 4K streaming, or remote work. The thin superfast margin reflects BT4's urban composition, where cable rollout has achieved near-complete gigabit coverage.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
0%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
0%
Premises that can use a fixed wireless access service
Broadband by sector
BT4 splits into 3 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| BT4 1 | 223 | 97% | 0% | 92% |
| BT4 2 | 211 | 99% | 0% | 96% |
| BT4 3 | 181 | 96% | 0% | 90% |
All BT4 1 postcodes (223)
All BT4 2 postcodes (211)
All BT4 3 postcodes (181)
Best deals
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Living in Belfast
Most households here choose between gigabit cable and standard superfast services. The consistent availability of high-speed connectivity removes uncertainty when moving or upgrading your connection.
Remote worker score
55/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
BT4 broadband FAQs
Can I get gigabit speeds in BT4?
Yes. Nearly 93 out of every 100 postcodes have access to gigabit connectivity, typically via cable networks.
What about postcodes that can't access gigabit?
Around 5% fall into the 30 to 300 Mbps range, which still exceeds the UK average download speed of 75 Mbps. A tiny fraction (under 1%) sits below 10 Mbps.
Are there any connectivity problems in this area?
No postcodes lack superfast speeds. Every location in BT4 meets the legal definition of acceptable broadband.
How does BT4 compare to broader Belfast performance?
BT4's gigabit penetration is at the upper end. It reflects strong cable coverage across much of the city centre.
Neighbouring districts
Check your exact postcode
Every postcode in BT4 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources