To make long story short you need to have nameservers in  your DNS zone the same you have in WHOIS

For example:

whois alltime.pp.ua |grep "Name Server"
Name Server:STAN.NS.CLOUDFLARE.COM
Name Server:KIA.NS.CLOUDFLARE.COM

dig ns alltime.pp.ua +short
kia.ns.cloudflare.com.
stan.ns.cloudflare.com.

Good luck.

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