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 s42-75-34-8.socorro.nm.wi-power.com is not the root of its zone.
Instead, try zone transfer on socorro.nm.wi-power.com .
Instead, try zone transfer on socorro.nm.wi-power.com .