03755297602968010b8ce15eac2510c1.6efdd814b90c5b72f9e1db2de08da8cd.t0196466001700808574.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 03755297602968010b8ce15eac2510c1.6efdd814b90c5b72f9e1db2de08da8cd.t0196466001700808574.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .