Change IPs for NS records

So here is the deal.  You have a domain registrar which holds the registration for your domain name.  That registrar holds an entry that points to the authoritative DNS servers that are handling your domain.  This may be the same company as the domain registrar, or your old ISP, or some other company like godaddy.com.

If you did not change who is handling your authorative DNS servers then you simply need to submit your DNS changes for the A records so they point to the new IP addresses.  This process is different for every provider out there.  Some you can call the changes in, some you have to send an email, some let you do it through a web portal.

They always claim it takes 24 hours.  This is due to the nature of how DNS propagates.  However, most of it is ready within the first 30 minutes to 3 hours.

So what you do depends on if you are changing your authoritative name servers and whether you are changing your dns provider.

Your old ISP is not going to notify the new ISP of anything.

I noticed that DNS only works when I enable the old WAN link and old NAT rules for old NS WAN IPs.

I did a check with intoDNS, it reported this:

Looks like the A records (the GLUE) got from the parent zone check are different than the ones got from your nameservers. You have to make sure your parent server has the same NS records for your zone as you do.

Also, dns2.mydomain.com reports (NO GLUE).

I also get a warning about recursive queries:

I could use the nameservers listed below to performe recursive queries. It may be that I am wrong but the chances of that are low. You should not have nameservers that allow recursive queries as this will allow almost anyone to use your nameservers and can cause problems.

@kenboonejr

How do I find out which authoritative DNS servers are handling my domain?

So, you are saying I have to contact the new ISP and tell them to update their DNS records
for my domain and from there they will propagate to the rest of the Internet?

what is your domain name?

admiral.hr

I tried checking for the NS record for my domain with an authoritative server for the .hr TLD.

dig +norec @hr-ns-1.carnet.hr. admiral.hr. NS

It is still pointing to the old ISP IP for dns1:

dns1.admiral.hr.        14440   IN      A       195.29.163.228

Go to network-tools.com
On the left side click on DNS and down below in the space put in admiral.hr

Then hit go.  

You will get these results:
Retrieving DNS records for admiral.hr...
DNS servers
dns2.admiral.hr
dns1.admiral.hr [195.29.163.228]

Answer records
admiral.hr            A      31.45.244.77      3600s
admiral.hr            NS       dns3.admiral.hr      3600s
admiral.hr            NS       dns2.admiral.hr      3600s
admiral.hr            NS       dns1.admiral.hr      3600s
admiral.hr            SOA      
server:      dns1.admiral.hr
email:      hostmaster@admiral.hr
serial:      86
refresh:      900
retry:      600
expire:      86400
minimum ttl:      3600
3600s
admiral.hr            MX      
preference:      10
exchange:      mail.admiral.hr
3600s

Authority records

Additional records
dns3.admiral.hr            A      83.139.114.100      3600s
dns2.admiral.hr            A      31.45.244.76      3600s
dns1.admiral.hr            A      31.45.244.75      3600s
mail.admiral.hr            A      31.45.244.77      3600s

So do you maintain these servers?

Yes, I maintain these:

dns3.admiral.hr            A      83.139.114.100      3600s
dns2.admiral.hr            A      31.45.244.76      3600s
dns1.admiral.hr            A      31.45.244.75      3600s
mail.admiral.hr            A      31.45.244.77      3600s

network-tools.com also reports old IP for dns1.admiral.hr:

dns1.admiral.hr [195.29.163.228]

So these are the authoritative domain servers for your domain.  So now what needs to happen is the registrar for the admiral.hr domain needs to be notified of the new authoritative name server IP addresses.

How do I notify the registrar about the change?