+44 identifies the UK numbering plan. Ofcom publishes current block allocations and number categories for deeper range analysis.
Country first
The ITU lists the United Kingdom under +44. Use the full number and national plan for what follows.
Range categories
Ofcom’s numbering data distinguishes geographic blocks beginning 01 or 02 from other types. Its public files identify allocated blocks.
Keep the field honest
A block record is not a live subscriber, current operator or location. Porting can change the provider.
Read an Ofcom-listed UK drama example
Ofcom lists London drama numbers in 020 7946 0000–0999 and says they will not be allocated to communications providers in the foreseeable future. We use 020 7946 0018 as an explanation example, not a subscriber result.
| Observation | Supported reading | Unsupported reading |
|---|---|---|
| +44 | UK numbering plan | The caller is physically in the UK |
| 020 in national format | London geographic area code | The subscriber’s home address |
| 7946 0018 in this specimen | Within the published drama example range | A real customer or active line |
| No current-carrier record | Current provider unknown | A guessed network brand |
The 020 conversion applies to this UK geographic example. Other UK number categories have different meanings and costs; a country code alone cannot establish call price.