77-73-224-0.as41960.net 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 77-73-224-0.as41960.net is not the root of its zone.
Instead, try zone transfer on as41960.net .