Some little Scripts which maybe others can use
Bash Script to check if DNS entries are synced to all DNS Server.
Just configure your DNS Servers in the script and then run:
./check_dns_entry.sh www.dom.ch
or for specific record
./check_dns_entry.sh dom.ch NS
Bash Script to Check a list of domains, what NS are in the whois records.
Just configure your domainlist at the top
./check_whois_records.sh