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 SA31. 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
SA31 1AD	Carmarthenshire	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 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1AF	Carmarthenshire	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 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1AG	Carmarthenshire	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 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1AH	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1AN	Carmarthenshire	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 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1AS	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1AW	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1BA	Carmarthenshire	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 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1BD	Carmarthenshire	Broadband coverage is mixed Gigabit availability is 12.5%, with 12.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1BH	Carmarthenshire	Broadband coverage is mixed Gigabit availability is 3.3%, with 3.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1BS	Carmarthenshire	Broadband coverage is mixed Gigabit availability is 26.9%, with 26.9% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1BU	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1BW	Carmarthenshire	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 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1BX	Carmarthenshire	Broadband coverage is mixed Gigabit availability is 50%, with 50% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1BY	Carmarthenshire	Broadband coverage is mixed Gigabit availability is 35.2%, with 35.2% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DA	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DB	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DD	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DE	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DG	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DH	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DJ	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DL	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DN	Carmarthenshire	Broadband coverage is mixed Gigabit availability is 33.3%, with 33.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA31 1DP	Carmarthenshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 94.3% 4G strong-coverage share is 94.3%, with 5G at Unavailable 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.