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 abts-mum-static-210.110.169.122.airtelbroadband.in is not the root of its zone.
Instead, try zone transfer on airtelbroadband.in .
Instead, try zone transfer on airtelbroadband.in .