303c2803b6c42a655f6eb0da67796b20.176dc0cc8c9a5a78295b93131dc462f3.659326576.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 303c2803b6c42a655f6eb0da67796b20.176dc0cc8c9a5a78295b93131dc462f3.659326576.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .