f757f6d5d05daa02503a94077c7a36ac.e49e8df26947fa8e575d431e7fae542b.t0419141001666935119.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 f757f6d5d05daa02503a94077c7a36ac.e49e8df26947fa8e575d431e7fae542b.t0419141001666935119.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .