f56e8193949309b2ecfdf1d5049a13aa.dc28c45700ad7b40f8f5396903e0bf81.769848930.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 f56e8193949309b2ecfdf1d5049a13aa.dc28c45700ad7b40f8f5396903e0bf81.769848930.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .