We have brought up some new nameservers to replace old ones.
If you are using the names of the servers as provided in your welcome mail, then you do not need to change anything.
If you are using IP addresses then you will need to make the following changes
Change 188.8.131.52 to 184.108.40.206 (EU Nameservers)
Change 220.127.116.11 to 18.104.22.168 (US Nameservers)
The servers in Red are being retired as DNS servers from 31-Oct-2016
Another new European DNS Server is available 22.214.171.124
So the two DNS clusters are:
126.96.36.199 - Roubaix DataCentre 188.8.131.52 - Strasbourg DataCentre 184.108.40.206 - Gravelines DataCentre
Nameservers for the US
220.127.116.11 - Beauharnois DataCentre 1 18.104.22.168 - Beauharnois DataCentre 2