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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 DL1. 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
DL1 1AA	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1AG	Darlington	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 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1AS	Darlington	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 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1AT	Darlington	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 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1AU	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1AW	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1AX	Darlington	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 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1AZ	Darlington	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 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BA	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BD	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BE	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BF	Darlington	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Mobile year 2025
DL1 1BG	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BH	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BJ	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BL	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BN	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BQ	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1BW	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1DA	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1DB	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1DD	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1DE	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1DF	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
DL1 1DG	Darlington	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 20.1% 4G strong-coverage share is 100%, with 5G at 20.1% 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.

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