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 988ea83db2fe06fb8fa45b1d35abb84b.517e0a2443295df476a7e2cd3a2cce07.f5df262793fbed6.comodoca.com is not the root of its zone.
Instead, try zone transfer on comodoca.com .
Instead, try zone transfer on comodoca.com .