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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 CM17. 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
CM17 0AA	Harlow	Strong broadband coverage Gigabit availability is 75%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AB	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AD	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AE	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AF	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AG	Harlow	Strong broadband coverage Gigabit availability is 91.3%, with 91.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AH	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AJ	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AL	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AN	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AP	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AQ	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AR	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AS	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AT	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AU	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AW	Harlow	Broadband coverage is mixed Gigabit availability is 0%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AX	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AY	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0AZ	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0BA	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0BB	Harlow	Strong broadband coverage Gigabit availability is 96%, with 96% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0BD	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0BE	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM17 0BG	Harlow	Strong broadband coverage Gigabit availability is 92.9%, with 92.9% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% 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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