Broadband and mobile checker

Search a postcode or postcode area against the current live broadband and mobile coverage seams.

Source: Ofcom broadband and mobile coverage. Coverage: Live connectivity rows matched postcode area CF15. Broadband is postcode level and mobile coverage remains area-level only in the current public seam.. Freshness: Broadband year 2024 · Mobile year 2025. Matches: 25.
Postcode Area Broadband Mobile Freshness
CF15 5BF Cardiff Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Mobile year 2025
CF15 5DT Cardiff Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Mobile year 2025
CF15 5DX Cardiff Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Mobile year 2025
CF15 5DZ Cardiff Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Mobile year 2025
CF15 5EB Cardiff Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Mobile year 2025
CF15 5EH Cardiff Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Mobile year 2025
CF15 5EJ Cardiff Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Mobile year 2025
CF15 7AB Cardiff Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7AD Cardiff Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7AE Rhondda Cynon Taf Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 96.2% · 5G 0.7%
4G strong-coverage share is 96.2%, with 5G at 0.7% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7AG Rhondda Cynon Taf Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 96.2% · 5G 0.7%
4G strong-coverage share is 96.2%, with 5G at 0.7% in the current area-level summary.
 Mobile year 2025
CF15 7AS Rhondda Cynon Taf Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 96.2% · 5G 0.7%
4G strong-coverage share is 96.2%, with 5G at 0.7% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7AT Rhondda Cynon Taf Broadband coverage is mixed
Gigabit availability is 0%, with 18.8% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 96.2% · 5G 0.7%
4G strong-coverage share is 96.2%, with 5G at 0.7% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7HU Cardiff Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7HW Cardiff Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7HX Cardiff Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7JD Rhondda Cynon Taf Broadband coverage is mixed
Gigabit availability is 0%, with 94.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 96.2% · 5G 0.7%
4G strong-coverage share is 96.2%, with 5G at 0.7% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7JE Rhondda Cynon Taf Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 96.2% · 5G 0.7%
4G strong-coverage share is 96.2%, with 5G at 0.7% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7JJ Rhondda Cynon Taf Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 96.2% · 5G 0.7%
4G strong-coverage share is 96.2%, with 5G at 0.7% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7JL Cardiff Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7JP Cardiff Broadband coverage is mixed
Gigabit availability is 3.1%, with 93.8% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7JQ Cardiff Broadband coverage is mixed
Gigabit availability is 0%, with 2.9% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7JR Cardiff Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CF15 7JS Cardiff Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Mobile year 2025
CF15 7JT Cardiff Broadband coverage is mixed
Gigabit availability is 40%, with 40% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 99.8% · 5G 95.9%
4G strong-coverage share is 99.8%, with 5G at 95.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025

Known caveats

  • Mobile coverage is still served at area level in the public seam, so treat it as a shortlist signal rather than a street-level verdict.
  • Connectivity rows do not replace a final provider and address-level availability check before you commit to a property.
  • If you search a postcode area, neighbouring postcode rows can differ enough that the exact postcode follow-up still matters.