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 SO21. 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
SO21 1AA	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AB	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AD	Winchester	Strong broadband coverage Gigabit availability is 75%, with 75% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AE	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AF	Winchester	Strong broadband coverage Gigabit availability is 75%, with 75% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AG	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AH	Winchester	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AJ	Winchester	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AL	Winchester	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AN	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AQ	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AR	Winchester	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AS	Winchester	Strong broadband coverage Gigabit availability is 86.7%, with 86.7% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AT	Winchester	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AU	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AW	Winchester	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AX	Winchester	Broadband coverage is mixed Gigabit availability is 71.4%, with 71.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AY	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1AZ	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1BA	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1BB	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1BD	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1BE	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1BH	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SO21 1BJ	Winchester	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 98.5% · 5G 18.8% 4G strong-coverage share is 98.5%, with 5G at 18.8% 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.