INITIAL

This notification is for customers who run their own authoritative DNS servers and use our secondary-dns.co.uk as secondary (slave).

As part of our DNS infrastructure project we will start to initiate Zone Transfers from an additional set of IP addresses.

You will still send your NOTIFY to secondary-dns.co.uk but you will start to see AXFR requests from an additional set of IP addresses.

Therefore, please update your ACLs to allow the following addresses in addition to what you have at the moment:

• 194.4.172.3
• 194.4.172.4
• 194.4.173.3
• 194.4.173.4
• 2001:8b6:1:0:194:4:172:3
• 2001:8b6:1:0:194:4:172:4
• 2001:8b6:2:0:194:4:173:3
• 2001:8b6:2:0:194:4:173:4

Please update your ACLs by March 11th.

We will have an overlap of using the existing DNS servers and the new DNS servers. As part of our testing we will start to use the new IP addresses from February 17th