The routers have been changed without stopping the service, since while the first router was being replaced, the charge was absorbed by the second one, and vice versa.
The F-root name server replica was installed at CATNIX in 2005, supporting IPv4 and IPv6. Its aim was to increase security in case of Distributed Denial-of-Service (DDoS) attacks.
The Domain Name System (DNS) is an Internet cornerstone based on a hierarchical structure where millions of servers around the world are part of the information needed to make things work. The root system consists of 13 servers which are named from A to M. From these, 10 are located in the United States, two in Europe and one in Japan. Because of the need of improving the safety and availability of the service, since when the DNS does not work or its access degrades typical applications (web, email, etc.) are disabled or penalized, replicas are distributed around the world.
CATNIX members can email email@example.com to contact ISC. For the rest of DNS root servers, mail addresses are:
- For root-J, .com and .net from Verisign: peeringOPS@verisign.com
- For root-L from ICANN: firstname.lastname@example.org