Tools

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 CB3. 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
CB3 0AA	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AD	Cambridge	Strong broadband coverage Gigabit availability is 89.7%, with 96.6% 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
CB3 0AE	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AF	Cambridge	Broadband coverage is mixed Gigabit availability is 42.1%, with 100% 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
CB3 0AG	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AH	Cambridge	Strong broadband coverage Gigabit availability is 94.6%, with 94.6% 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
CB3 0AJ	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AL	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AN	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AP	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AQ	Cambridge	Strong broadband coverage Gigabit availability is 80%, with 80% 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
CB3 0AS	Cambridge	Broadband coverage is mixed Gigabit availability is 66.7%, with 66.7% 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
CB3 0AT	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AX	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AY	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0AZ	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0BB	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0BD	Cambridge	Strong broadband coverage Gigabit availability is 91.7%, with 91.7% 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
CB3 0BE	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0BG	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0BH	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0BJ	Cambridge	Strong broadband coverage Gigabit availability is 90%, with 90% 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
CB3 0BL	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0BN	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CB3 0BP	Cambridge	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 50% 4G strong-coverage share is 100%, with 5G at 50% 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.

Broadband and mobile checker

Research

Plan and learn

Support