Find a domain’s registrar
The registrar, DNS operator and host can be different companies.
Look up registration data
For an international domain, use ICANN Lookup and inspect the registrar field. For Ukrainian zones, use the registry’s Whois. Some contact information may be withheld.
Distinguish the roles
Nameserver names do not identify the registrar. The service you paid may be a reseller; check your invoice and confirmation message too.
For an outward transfer
Contact support. Bestname support provides a permission link to clients without a reseller, while resellers obtain AuthInfo manually through support. Contact support.