950341d7fa448f9fec87cdcbdc32d27a.b6ac87a26ec681cf2d209193a90099ae.754460971.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 950341d7fa448f9fec87cdcbdc32d27a.b6ac87a26ec681cf2d209193a90099ae.754460971.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .