2a3409db860854bcc607d5b43f43bc3d.e516e2142b3b781acabbf42159659a43.6286295d98594.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 2a3409db860854bcc607d5b43f43bc3d.e516e2142b3b781acabbf42159659a43.6286295d98594.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .