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9th September 2021 – Planned System Maintenance

The following service will be unavailable on Thursday 9th September from 06:00 – 07:00 UTC:

.UK ccTLD:

  • Testbed EPP

This is due to upcoming changes to .UK EPP cipher suites. Please see the notice below.

Upcoming changes to the cipher suites used in EPP on the .UK platform

The end goal is to remove some weak cipher suites from .uk, however it will be completed in stages to allow your testing.

When Change
9th September 2021 1. The cipher suites on the .UK testbed environment (testbed-epp.nominet.org.uk:700) will change to:

ECDHE-RSA-AES256-GCM-SHA384

ECDHE-RSA-AES128-GCM-SHA256

ECDHE-RSA-AES256-SHA384

ECDHE-RSA-AES128-SHA256

DES-CBC3-SHA

AES128-SHA

AES128-SHA256

AES128-GCM-SHA256

AES256-SHA

AES256-SHA256

AES256-GCM-SHA384

CAMELLIA128-SHA

CAMELLIA256-SHA

IDEA-CBC-SHA

RC4-SHA

SEED-SHA

2. The production EPP environment (epp.nominet.org.uk:700) will remain as is.

8th December 2021 1.The cipher suites on the .UK production environment (epp.nominet.org.uk:700) and (ote-epp.nominet.org.uk:700) will change to:

ECDHE-RSA-AES256-GCM-SHA384

ECDHE-RSA-AES128-GCM-SHA256

ECDHE-RSA-AES256-SHA384

ECDHE-RSA-AES128-SHA256

DES-CBC3-SHA

AES128-SHA

AES128-SHA256

AES128-GCM-SHA256

AES256-SHA

AES256-SHA256

AES256-GCM-SHA384

CAMELLIA128-SHA

CAMELLIA256-SHA

IDEA-CBC-SHA

RC4-SHA

SEED-SHA

2. The cipher suites on the .UK testbed environment (testbed-epp.nominet.org.uk:700) will change to:

ECDHE-RSA-AES256-GCM-SHA384

ECDHE-RSA-AES128-GCM-SHA256

ECDHE-RSA-AES256-SHA384

ECDHE-RSA-AES128-SHA256

8th March 2022 1. The cipher suites on the .UK production environment (epp.nominet.org.uk:700) and (ote-epp.nominet.org.uk:700) will change to:

ECDHE-RSA-AES256-GCM-SHA384

ECDHE-RSA-AES128-GCM-SHA256

ECDHE-RSA-AES256-SHA384

ECDHE-RSA-AES128-SHA256

2. The cipher suites on the .UK testbed environment (testbed-epp.nominet.org.uk:700) will not change, and will be in synchronisation with production and OTE.

What do I need to do?

Check that your EPP client supports and uses the cipher suites that will be supported after the maintenance window using the testbed environment.

If you have any questions please contact our customer care services team on +44 1865 332233 or via [email protected].

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