HSCN/TN/nhs.uk logical DNS configuration
This diagram shows the logical DNS configuration used across HSCN/TN.
2019 technical refresh
The TN has completed a technical refresh programme to ensure the core components of the network and key supporting infrastructure (including nhs.uk DNS) continue to perform well during the migration to HSCN.
To facilitate closure of the TN, NHS Digital are running a procurement for a new DNS service. The provider will use NHS Digital IP addresses and all organisations must transition to the new resolution IP addresses.
As part of the DNS refresh, two new resolution IP addresses have been implemented alongside the legacy IP addresses. The new NHS Digital RIPE IP addresses of 22.214.171.124 and 126.96.36.199 will run concurrently alongside the legacy, BT RIPE IP addresses 188.8.131.52 and 184.108.40.206 IP.
The historical IP configurations will continue to use the current internal DNS servers shown as their 'local' servers for DNS queries. They are at the following network IP addresses: cns0.nhs.uk (220.127.116.11) and cns1.nhs.uk (18.104.22.168).
These IP addresses are owned and managed by BT and will eventually be decommissioned when the BT TN DNS service is replaced by an alternate service provider.
|Current - DNS BT RIPE IP addresses
||New - NHS Digital RIPE IP addresses
NHS Digital recommend that you carry out local risk assessments and testing of the new IP addresses to ensure that they can resolve DNS requests against the new IP address configurations. In preparation for the migration to an alternate service provider all organisations using the existing BT TN DNS service must reconfigure their service to use the new NHS Digital RIPE IP addresses by 31 December 2019.
Firewall rules in place to allow port 53 queries to only connect to the legacy IP addresses should be updated.
For further information on the technical refresh please contact us by email at firstname.lastname@example.org.
DNS change request process
NHS Digital own and administer nhs.uk DNS for the NHS in England.
NSS in Scotland administers the scot.nhs.uk (sub) domain.
NHS Wales Informatics Service manages the wales.nhs.uk/cymru.nhs.uk sub-domain.
HSCNI manages the n-i.nhs.uk sub-domain.
The TN provider will continue to manage the 'live' DNS service for the foreseeable future.
DNS change requests, to change either zone data files or individual DNS records, must be made directly to these bodies. The HSCN/TN service provider cannot accept DNS change requests from end-users.
Find England DNS change request forms and contact information.
For further details please see HSCN/Transition Network DNS.