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 HP4. 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
HP4 1AA	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AB	Dacorum	Broadband coverage is mixed Gigabit availability is 35.3%, with 35.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AD	Dacorum	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 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AE	Dacorum	Strong broadband coverage Gigabit availability is 80%, with 80% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AF	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AG	Dacorum	Broadband coverage is mixed Gigabit availability is 53.8%, with 53.8% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AH	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AJ	Dacorum	Strong broadband coverage Gigabit availability is 78.6%, with 78.6% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AL	Dacorum	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 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AQ	Dacorum	Broadband coverage is mixed Gigabit availability is 62.5%, with 62.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AR	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1AT	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BB	Dacorum	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 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BE	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BJ	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BL	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BS	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BT	Dacorum	Strong broadband coverage Gigabit availability is 80%, with 80% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BU	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BW	Dacorum	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 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BX	Dacorum	Strong broadband coverage Gigabit availability is 80%, with 80% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BY	Dacorum	Strong broadband coverage Gigabit availability is 88.9%, with 88.9% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1BZ	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1DA	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
HP4 1DB	Dacorum	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 51.6% 4G strong-coverage share is 99.6%, with 5G at 51.6% 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.