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 f9d49f869805290220bd0125cf9d68b1.d7d7f6404d216c5ea258b8944bd8654b.t0611526001769516515.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .
Instead, try zone transfer on sectigo.com .