f4f67a3c85b50875259d9ac4ae55fa33.51e12cb41e4bf7100e8b80a8e4cd1a80.836362665.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 f4f67a3c85b50875259d9ac4ae55fa33.51e12cb41e4bf7100e8b80a8e4cd1a80.836362665.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .