CF11 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 777 postcodes across 5 sectors in Cardiff.
Full fibre
0%
Gigabit
89%
Superfast
99%
Postcodes
777
CF11 in central Cardiff demonstrates premium connectivity: 90.3% ultrafast, 88.8% gigabit across 777 postcodes, with 75.7% fixed wireless coverage and minimal below-10Mbps premises.
Broadband speeds in CF11
Share of CF11 premises by the fastest download speed available, averaged across all 777 postcodes in the district.
Gigabit reaches 88.8% of postcodes across the 777-postcode zone, matching high-performing Cambridge sectors and reflecting substantial fibre and cable investment in central Cardiff. Wireless is present in 75.7% of addresses, far exceeding CF10 and suggesting full wireless overlay atop wired infrastructure. This dual-network approach provides redundancy and choice for most households. Superfast penetration reaches 98.5%, ensuring baseline speeds across virtually all postcodes. Below-10Mbps premises are negligible at 0.7%, making slow broadband largely absent. The speed distribution is heavily weighted towards gigabit: 90.3% achieve ultrafast speeds, with only 8.2% in the 30 to 300 Mbps band. CF11 demonstrates Cardiff's strongest digital infrastructure capability, supporting businesses and remote workers alike.
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
76%
Premises that can use a fixed wireless access service
Broadband by sector
CF11 splits into 5 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 |
|---|---|---|---|---|
| CF11 0 | 62 | 96% | 0% | 85% |
| CF11 6 | 217 | 100% | 0% | 95% |
| CF11 7 | 151 | 100% | 0% | 93% |
| CF11 8 | 147 | 97% | 0% | 78% |
| CF11 9 | 200 | 98% | 0% | 88% |
All CF11 0 postcodes (62)
All CF11 6 postcodes (217)
All CF11 7 postcodes (151)
All CF11 8 postcodes (147)
All CF11 9 postcodes (200)
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Living in Cardiff
CF11 is Cardiff's premium connectivity hub, supporting the city centre and inner suburbs with excellent broadband diversity. Price data is not recorded.
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
CF11 broadband FAQs
Is CF11 Cardiff's best-connected postcode?
By standard metrics, yes. 88.8% gigabit and 98.5% superfast rank it among the strongest Welsh districts.
What does 75.7% fixed wireless mean?
It indicates substantial wireless coverage alongside wired infrastructure. Most postcodes have wireless available.
Are there any poorly served postcodes?
Just 0.7% fall below 10 Mbps, minimal for any urban centre.
Should CF11 be a priority for broadband-dependent movers?
Yes. Gigabit and wireless options give you redundancy and speed. It's Cardiff's most reliable digital infrastructure.
Neighbouring districts
Check your exact postcode
Every postcode in CF11 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