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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 CB4. 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
CB4 0AB	South Cambridgeshire	Broadband coverage is mixed Gigabit availability is 40%, with 40% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0AE	South Cambridgeshire	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 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0AF	South Cambridgeshire	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Mobile year 2025
CB4 0AG	South Cambridgeshire	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Mobile year 2025
CB4 0AP	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0DL	Cambridge	Broadband coverage is mixed Gigabit availability is 28%, with 28% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0DN	Cambridge	Broadband coverage is mixed Gigabit availability is 27.3%, with 27.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0DS	South Cambridgeshire	Broadband coverage is mixed Gigabit availability is 37%, with 37% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0DT	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0DW	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0FJ	South Cambridgeshire	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 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0FN	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0FP	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0FW	South Cambridgeshire	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 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0FX	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0FY	South Cambridgeshire	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 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0FZ	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0GA	South Cambridgeshire	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 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0GD	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0GF	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0GH	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0GJ	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0GN	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0GQ	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB4 0GW	South Cambridgeshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.3% · 5G 11.1% 4G strong-coverage share is 99.3%, with 5G at 11.1% 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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