2001-1c01-2d0c-7f00-0000-0000-0000-0001.cable.dynamic.v6.ziggo.nl 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 2001-1c01-2d0c-7f00-0000-0000-0000-0001.cable.dynamic.v6.ziggo.nl is not the root of its zone.
Instead, try zone transfer on cable.dynamic.v6.ziggo.nl .