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 AL10. 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
AL10 0AA	Welwyn Hatfield	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 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AB	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AD	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AE	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AG	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AH	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AJ	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AL	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AN	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AQ	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AT	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AU	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AW	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AX	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AY	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0AZ	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BA	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BB	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BD	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BE	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BG	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BH	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BJ	Welwyn Hatfield	Broadband coverage is mixed Gigabit availability is 4.8%, with 90.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BL	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
AL10 0BN	Welwyn Hatfield	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 36.2% 4G strong-coverage share is 99.9%, with 5G at 36.2% 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.