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 CF23. Broadband is postcode level and mobile coverage remains area-level only in the current public seam.. Freshness: Mobile year 2025. Matches: 25.
Postcode Area Broadband Mobile Freshness
CF23 0AS 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
CF23 0BP 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
CF23 0DB 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
CF23 0DF 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
CF23 0DS 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
CF23 0DT 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
CF23 0ES 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
CF23 0FH 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
CF23 0FP 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
CF23 0FQ 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
CF23 0FR 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
CF23 0GP 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
CF23 0GU 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
CF23 0HB 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
CF23 0JW 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
CF23 0LE 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
CF23 0LG 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
CF23 0LH 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
CF23 0LJ 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
CF23 0LN 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
CF23 0LP 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
CF23 0LQ 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
CF23 0LR 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
CF23 0LU 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
CF23 0LX 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

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.