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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 EC3A. 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
EC3A 1AT	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 2AA	City of London	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 100% · 5G 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Mobile year 2025
EC3A 2AD	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 2BG	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 2BJ	City of London	Broadband coverage is mixed Gigabit availability is 20%, with 20% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 3AA	Islington	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 100% · 5G 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Mobile year 2025
EC3A 3BP	City of London	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 100% · 5G 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 3DE	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 3DH	City of London	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 100% · 5G 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 4AA	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 4AF	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5AF	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5AG	City of London	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 100% · 5G 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Mobile year 2025
EC3A 5AR	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5AT	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5AW	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5AX	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5AY	City of London	Broadband coverage is mixed Gigabit availability is 28.2%, with 28.2% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5BU	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5BZ	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5DE	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5DH	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5DQ	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5EB	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
EC3A 5EH	City of London	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 100% 4G strong-coverage share is 100%, with 5G at 100% 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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