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Number Block Transactions

Communications Providers are responsible for ensuring that their records are updated to reflect the most recent changes to the National Numbering Scheme.

To help make Communications Providers aware of changes to Telephone Numbers, and hence to help them update their records, Ofcom has created 2 lists of transactions based on Allocation/Transfer of Telephone numbers made over a rolling 12 month period (please note that Transferred numbers will also be shown as Allocated).

There are two lists - in MS Excel format:

• Telephone Numbers beginning 01-09
• Codes used for Indirect Access, and Directory Enquiries ("DQ")

This information is updated weekly where possible.

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