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-del-dynamic-131.49.77.182.airtelbroadband.in is not the root of its zone.
Instead, try zone transfer on airtelbroadband.in .
Instead, try zone transfer on airtelbroadband.in .