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AddressBase products epoch dates

Find the latest - and past - epoch dates for our addressing products.

AddressBase, AddressBase Plus, AddressBase Premium and AddressBase Islands are updated every six weeks. This six week period of time is known as an epoch.

Our AddressBase products are currently available as a full supply or Change Only Update (COU) for each epoch.

Future dates are provided as an indication only and are subject to change. Data cut dates are estimated; these are given to provide an indication of the last point at which changes will reach the epoch.  

Please note: as we approach the publication date and prepare to release a new epoch, any new requests placed for data will be paused to ensure data integrity. These requests will be processed as soon as this pause is lifted.

Epoch number Publication date Data cut date
86 5 August 2021  5 July 2021
87 16 September 2021 16 August 2021
88 28 October 2021 27 September 2021
89 10 December 2021 8 November 2021

Past epoch publication dates

Epoch number Publication date Data cut date    
85 24 June 2021 24 May 2021    
84 13 May 2021 12 April 2021    
83 1 April 2021 1 March 2021    
82 25 February 2021 18 January 2021    
81 7 January 2021 30 November 2020