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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 PO1. 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
PO1 1AA Portsmouth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Mobile year 2025
PO1 1AB Portsmouth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Mobile year 2025
PO1 1AN Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1AQ Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1AT Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1AU Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1AW Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BA Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BG Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BH Portsmouth Strong broadband coverage
Gigabit availability is 75%, with 75% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BJ Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BQ Portsmouth Strong broadband coverage
Gigabit availability is 76.9%, with 76.9% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BS Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BT Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BU Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BW Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BX Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BY Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1BZ Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1DD Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1DE Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1DG Portsmouth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Mobile year 2025
PO1 1DH Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
PO1 1DN Portsmouth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% in the current area-level summary.
 Mobile year 2025
PO1 1DS Portsmouth 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 68.6%
4G strong-coverage share is 100%, with 5G at 68.6% 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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