SkyNet-Best-ISP-in-StPetersburg-Russia.sknt.ru 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 SkyNet-Best-ISP-in-StPetersburg-Russia.sknt.ru is not the root of its zone.
Instead, try zone transfer on skynet.ru .