_sips._tcp.sbc2.voip.uio.no 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 _sips._tcp.sbc2.voip.uio.no is not the root of its zone.
Instead, try zone transfer on uio.no .