7F75E41D523FDF2A705498207B89DD25.FEC5997C620778D862C266E4D21B5FD9.716160634.sectigo.com 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 7F75E41D523FDF2A705498207B89DD25.FEC5997C620778D862C266E4D21B5FD9.716160634.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .