440D9D51FE6F67773EEE762B2BFC855C.8326AB9E4D56A99B59E0FF58B940DD3F.a835dc0fde1eb76aa0.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 440D9D51FE6F67773EEE762B2BFC855C.8326AB9E4D56A99B59E0FF58B940DD3F.a835dc0fde1eb76aa0.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .