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 CF5. 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
CF5 1AA	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AB	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AD	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AE	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AF	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AG	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AH	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AJ	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AL	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AN	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AP	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AQ	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AR	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AS	Cardiff	Broadband coverage is mixed Gigabit availability is 0%, with 100% 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
CF5 1AT	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AU	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AW	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AX	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AY	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1AZ	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1BA	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1BB	Cardiff	Strong broadband coverage Gigabit availability is 96%, with 96% 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
CF5 1BD	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1BE	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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
CF5 1BF	Cardiff	Strong broadband coverage Gigabit availability is 100%, with 100% 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.