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 WD23. 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
WD23 1AA Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AB Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AD Hertsmere Strong broadband coverage
Gigabit availability is 96.2%, with 96.2% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AE Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AG Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AH Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AJ Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AL Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AN Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AP Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AQ Hertsmere Broadband coverage is mixed
Gigabit availability is 29.2%, with 29.2% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AR Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AS Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AT Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AU Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AW Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AX Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AY Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1AZ Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1BA Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1BB Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1BD Hertsmere Broadband coverage is mixed
Gigabit availability is 73.2%, with 73.2% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1BF Hertsmere Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Mobile year 2025
WD23 1BH Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
WD23 1BJ Hertsmere 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 93.5%
4G strong-coverage share is 100%, with 5G at 93.5% 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.