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Re: [LUG] DNS Servers and Test server

 

Brown Richard wrote:
> 
> Thanks for the reply. What I currently have is space on a shared  
> hosting set-up and I am redirecting sites via that. However, I buy my  
> domains through fasthosts and will be trying their ip redirect set-up.  

Fasthosts appear to have both their DNS servers in the same AS.

Hard to pin down, fasthosts use ns[x].fasthosts.net.uk, some customers 
use livedns.co.uk and some fast-hosts.org, but in all cases I see only 
servers on Fasthosts main network.

So not quite as bad as sequential IP addresses, but still a single 
routing issue might obliterate all fasthost hosted domains.

Probably not a major issue for you, but your reliability will be bounded 
by fasthosts network reachability. Which isn't perfect, netcraft noted 
an outage in 2006.

Any provider of DNS with servers on more than one routing domain is 
likely to have substantially better availability, even if the individual 
networks have substantially lower reliability each. Some specialist DNS 
providers will also provide ANYCAST based DNS hosting.

If they have more than the 460,000 hosts netcraft reported last time 
fasthosts disappeared of the Internet, it looks like an easily avoidable 
cock-up waiting to happen.

The registers repeated description of fasthosts as gaff prone is not a 
good sign in this regard.

If you must use a cheap service, Go-Daddy at least have servers in 
multiple autonomous routing domains. Otherwise I'm sure I know someone 
who can help :)

  Simon



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