How many nameservers?

Danny Mayer mayer at
Tue Feb 3 12:57:56 UTC 2009

Ben Croswell wrote:
> I have never heard of there being any downside to a large number of NS
> records for a domain.
> I know internally to my company we have large numbers of NS records for
> the internal domains.

There is one. A large number of NS records won't fit into a UDP packet
and you get TC flag and you have to retry with TCP. This gets worse if
one side does not support EDNS which would allow a larger packet.


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