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 CO3. 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
CO3 0AB Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AD Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AE Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AF Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AG Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AH Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AJ Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AL Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AN Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AP Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AQ Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AR Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AS Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AT Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AU Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AW Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AX Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AY Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0AZ Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0BA Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0BB Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0BD Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0BE Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0BG Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
CO3 0BH Colchester 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 25.3%
4G strong-coverage share is 100%, with 5G at 25.3% 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.