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 LL37. 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
LL37 2JA	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
LL37 2JB	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
LL37 2JD	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
LL37 2JE	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
LL37 2JF	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
LL37 2JG	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
LL37 2JH	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
LL37 2JJ	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
LL37 2JL	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
LL37 2JP	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
LL37 2JQ	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
LL37 2JR	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
LL37 2JS	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
LL37 2JT	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
LL37 2JU	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
LL37 2JX	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
LL37 2JY	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
LL37 2JZ	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
LL37 2LA	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
LL37 2QA	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
LL37 2QB	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
LL37 2QD	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
LL37 2QE	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
LL37 2QF	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
LL37 2QH	Gwynedd	Broadband coverage is mixed Gigabit availability is 60%, with 60% 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.