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 S41. 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
S41 0AA Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AB Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AD Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AE Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AF Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AG Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AH Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AJ Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AL Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AN Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AP Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AQ Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AR Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AS Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AT Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AU Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AW Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AX Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0AY Chesterfield Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Mobile year 2025
S41 0AZ Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0BA Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0BB Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0BD Chesterfield Strong broadband coverage
Gigabit availability is 94.7%, with 94.7% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0BE Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
S41 0BF Chesterfield 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 54%
4G strong-coverage share is 100%, with 5G at 54% 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.