"spare hosts" as personal DNS nameservers for 'mynew.org'

[Reindl Harald]

Am 11.07.2017 um 15:57 schrieb bind at zq3q.org:
> Assume I register domain 'mynew.org' with registrar namecheap; and as an exercise,
> I plan to setup my own two authoritative DNS nameservers for 'mynew.org'.
> 
> I have several linux VMs, that are under used, so I want to use them
> for the nameservers for 'mynew.org'.  **Neither are in 'mynew.org';
> is that going to work?**
> 
> namecheap support seems to suggest that the personal DNS authorative nameservers
> for 'mynew.org', must be in 'mynew.org', as in
> 
>      ns1.mynew.org
>      ns2.mynew.org

for sure not and i am repsonsible for both zones and some hundret others 
on that nameservers over 15 years....

https://intodns.com/rhsoft.net confirms that all is fine and when your 
registrar really has such crazy requirements switch to a sane one - 
frankly it's even not helpful in case you need to switch nameservers 
because in the case above they become GLUE records with a TTL of 172800 
independent from the zone TTL

i had to switch a server which hosted websites and one of the 
nameservers (i know don't mix it) to a different machine some years ago 
and it was not funny that it took ages until webclients used the new IP 
address while NDS would not have been a problem by just keep the old one 
as additional slave until shut it down

ns1.thelounge.net.   ['85.124.176.242']   [TTL=172800]
ns2.thelounge.net.   ['91.118.73.16']   [TTL=172800]

[harry at rh:~]$ whois rhsoft.net
.......
Name Server: ns1.thelounge.net
Name Server: ns2.thelounge.net
DNSSEC: Unsigned

[harry at rh:~]$ dig NS rhsoft.net @ns1.thelounge.net
; <<>> DiG 9.10.5-P2-RedHat-9.10.5-2.P2.fc25 <<>> NS rhsoft.net 
@ns1.thelounge.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 27172
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1024
;; QUESTION SECTION:
;rhsoft.net.                    IN      NS

;; ANSWER SECTION:
rhsoft.net.             86400   IN      NS      ns2.thelounge.net.
rhsoft.net.             86400   IN      NS      ns1.thelounge.net.