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 SA20. 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
SA20 0AA Carmarthenshire Broadband coverage is mixed
Gigabit availability is 61.5%, with 61.5% 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
SA20 0AB Carmarthenshire Strong broadband coverage
Gigabit availability is 76.9%, with 76.9% 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
SA20 0AG 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
SA20 0AJ Carmarthenshire Below-USO risk present
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 100% 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
SA20 0AL 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
SA20 0AN 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
SA20 0AP 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
SA20 0AR Carmarthenshire Broadband coverage is mixed
Gigabit availability is 63.6%, with 63.6% 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
SA20 0AS 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
SA20 0AT 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
SA20 0AU 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
SA20 0AW 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
SA20 0AX Carmarthenshire Below-USO risk present
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 33.3% 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
SA20 0AY Carmarthenshire Strong broadband coverage
Gigabit availability is 96.3%, with 96.3% 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
SA20 0AZ 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
SA20 0BA 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
SA20 0BB 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
SA20 0BD Carmarthenshire Strong broadband coverage
Gigabit availability is 85.3%, with 85.3% 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
SA20 0BE 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
SA20 0BG 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
SA20 0BH Carmarthenshire Broadband coverage is mixed
Gigabit availability is 13.6%, with 13.6% 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
SA20 0BJ 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
SA20 0BL 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
SA20 0BN Carmarthenshire Broadband coverage is mixed
Gigabit availability is 66.7%, with 66.7% 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
SA20 0BP Carmarthenshire Broadband coverage is mixed
Gigabit availability is 66.7%, with 66.7% 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.