ip.static.168-243-220-232.intercom.com.sv 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 ip.static.168-243-220-232.intercom.com.sv is not the root of its zone.
Instead, try zone transfer on intercom.com.sv .