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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.

*There is potential for the publication date of Epoch 81 to move to the week commencing 11 January 2021 following Christmas closure.

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

Past epoch publication dates

Epoch number Publication date Data cut date
80 19 November 2020 19 October 2020
79 8 October 2020 8 September 2020
78 27 August 2020 27 July 2020
77 16 July 2020 15 June 2020
76 4 June 2020 4 May 2020