1kbfhkk3ai2cnu2fo6ek7kbcid7s2q3p.mylib.eu IXFR zone transfer

Changes since SOA version

IXFR is a zone transfer request that returns changes since a specific SOA version. Enter the SOA version to request changes since then.

Not an apex domain The domain 1kbfhkk3ai2cnu2fo6ek7kbcid7s2q3p.mylib.eu is not the root of its zone.
Instead, try zone transfer on mylib.eu .