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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 BT3. 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
BT3 9AA	BELFAST	Broadband coverage is mixed Gigabit availability is 33.3%, with 33.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9AD	BELFAST	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 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9AE	BELFAST	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 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9AG	BELFAST	Broadband coverage is mixed Gigabit availability is 50%, with 50% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9AH	BELFAST	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 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9AL	BELFAST	Below-USO risk present Gigabit availability is 16.7%, with 16.7% of premises at at least 300 Mbps and 16.7% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9AQ	BELFAST	Below-USO risk present Gigabit availability is 66.7%, with 66.7% of premises at at least 300 Mbps and 11.1% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9AR	BELFAST	Broadband coverage is mixed Gigabit availability is 40.7%, with 40.7% of premises at at least 300 Mbps and 3.7% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9AS	BELFAST	Below-USO risk present Gigabit availability is 33.3%, with 33.3% of premises at at least 300 Mbps and 50% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9BG	BELFAST	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Mobile year 2025
BT3 9BJ	BELFAST	Below-USO risk present Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 100% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9BP	BELFAST	Below-USO risk present Gigabit availability is 57.1%, with 57.1% of premises at at least 300 Mbps and 42.9% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9BS	BELFAST	Below-USO risk present Gigabit availability is 25%, with 25% of premises at at least 300 Mbps and 75% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9BU	BELFAST	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 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9BW	BELFAST	Broadband coverage is mixed Gigabit availability is 56.9%, with 56.9% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9BX	BELFAST	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Mobile year 2025
BT3 9DA	BELFAST	Strong broadband coverage Gigabit availability is 98.5%, with 98.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9DB	BELFAST	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 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9DE	BELFAST	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 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9DF	BELFAST	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Mobile year 2025
BT3 9DH	BELFAST	Broadband coverage is mixed Gigabit availability is 12.5%, with 12.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9DJ	BELFAST	Broadband coverage is mixed Gigabit availability is 18.8%, with 18.8% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9DL	BELFAST	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Mobile year 2025
BT3 9DP	BELFAST	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 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT3 9DR	BELFAST	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 99.9% · 5G 84.3% 4G strong-coverage share is 99.9%, with 5G at 84.3% 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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