6211A6821F3AF63CD7A92AAC6D0A5396.F7A50E10685BF25583F8E6FB6CA6988B.64898ecb37c68.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 6211A6821F3AF63CD7A92AAC6D0A5396.F7A50E10685BF25583F8E6FB6CA6988B.64898ecb37c68.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .