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 LL39. Broadband is postcode level and mobile coverage remains area-level only in the current public seam.. Freshness: Broadband year 2024 · Mobile year 2025. Matches: 19.
Postcode Area Broadband Mobile Freshness
LL39 1AJ Gwynedd Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1AQ Gwynedd Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1AX Gwynedd Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1AZ Gwynedd Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1BJ Gwynedd Strong broadband coverage
Gigabit availability is 94.1%, with 94.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1BQ Gwynedd Strong broadband coverage
Gigabit availability is 87.5%, with 87.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1BX Gwynedd Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1BZ Gwynedd 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 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1DQ Gwynedd 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 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1LJ Gwynedd 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 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1LQ Gwynedd 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 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1LX Gwynedd 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 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1LZ Gwynedd 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 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1YP Gwynedd 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 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1YR Gwynedd Broadband coverage is mixed
Gigabit availability is 57.1%, with 57.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1YS Gwynedd Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Mobile year 2025
LL39 1YT Gwynedd Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1YU Gwynedd Strong broadband coverage
Gigabit availability is 96.4%, with 96.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, with 5G at Unavailable in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
LL39 1YY Gwynedd Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 93.8%
4G strong-coverage share is 93.8%, 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.