C6A67794E9240B8AA72D7ACB656590CB.3529FDF2EDD8455F0457956D3CFD3D5F.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 C6A67794E9240B8AA72D7ACB656590CB.3529FDF2EDD8455F0457956D3CFD3D5F.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .