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 PO3. 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
PO3 5AA 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
PO3 5AB 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
PO3 5AD 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
PO3 5AF 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
PO3 5AG 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
PO3 5AH 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
PO3 5AJ 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
PO3 5AL 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
PO3 5AN Portsmouth Strong broadband coverage
Gigabit availability is 95.8%, with 95.8% 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
PO3 5AP 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
PO3 5AQ 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
PO3 5AR 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
PO3 5AS 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
PO3 5AT 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
PO3 5AU 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
PO3 5AW 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
PO3 5AX 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
PO3 5AY 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
PO3 5BA 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
PO3 5BB 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
PO3 5BD 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
PO3 5BE 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
PO3 5BG 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
PO3 5BH 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
PO3 5BJ 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.