[Suggestion] Nameservers

Allow four (preferably configurable for more) nameservers to be specified/displayed in the GUI.
RFC recommends a minimum of two and up to six, be used.

are you using 1 ip or 2 or more ips for name servers ?

My standard configuration is three (of my own) nameservers. On other servers, I use four and occasionally six.

name server are on different/multiple ips ?

name server are on different/multiple ips ?

Of course. My own nameservers are on geographically diverse VPS.
Where 4 or 6 nameservers are used, they are 3rd party ones, with Anycast capability, for example.

(Edited for clarity.)

you meant you use one name servers each vps ha ha hah a ?
if you've 6 name servers on same ip its no use

you meant you use one name servers each vps ha ha hah a ?
if you've 6 name servers on same ip its no use

Words fail me. 

According to RFC2182 section 5 you must have at least 3 nameservers, and no more than 7

https://www.iana.org/help/nameserver-requirements
https://www.cira.ca/resources/anycast/guide-how/best-practices-improving-external-dns-resiliency

Minimum number of name servers

There must be at least two NS records listed in a delegation, and the hosts must not resolve to the same IP address.

by the way you can add extra name servers manually

in future maybe we can add more name server add option.