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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 SG3. 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
SG3 6AA	North Hertfordshire	Strong broadband coverage Gigabit availability is 82.4%, with 82.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AB	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AD	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AE	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AF	North Hertfordshire	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 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AG	North Hertfordshire	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 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AH	North Hertfordshire	Strong broadband coverage Gigabit availability is 97.6%, with 97.6% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AJ	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AL	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AN	North Hertfordshire	Strong broadband coverage Gigabit availability is 89.5%, with 89.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AP	North Hertfordshire	Strong broadband coverage Gigabit availability is 77.3%, with 77.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AQ	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AR	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AS	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AT	North Hertfordshire	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 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AU	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AW	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AX	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AY	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6AZ	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6BA	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6BB	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6BD	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6BE	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG3 6BG	North Hertfordshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.6% · 5G 17.7% 4G strong-coverage share is 99.6%, with 5G at 17.7% 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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