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 BT12. 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
BT12 4AA	BELFAST	Strong broadband coverage Gigabit availability is 77.9%, with 77.9% 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
BT12 4AD	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
BT12 4AE	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
BT12 4AF	BELFAST	Broadband coverage is mixed Gigabit availability is 38.9%, with 38.9% 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
BT12 4AG	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
BT12 4AH	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
BT12 4AJ	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
BT12 4AL	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
BT12 4AP	BELFAST	Broadband coverage is mixed Gigabit availability is 42.9%, with 42.9% 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
BT12 4AQ	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
BT12 4AS	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
BT12 4BA	BELFAST	Strong broadband coverage Gigabit availability is 96.7%, with 96.7% 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
BT12 4BU	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
BT12 4DB	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
BT12 4DE	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
BT12 4DF	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
BT12 4DH	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
BT12 4DN	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
BT12 4DQ	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
BT12 4DS	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
BT12 4DW	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
BT12 4EA	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
BT12 4EJ	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
BT12 4FG	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
BT12 4FQ	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

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.