$ORIGIN .
$TTL 3600

@       SOA     ns1. admin.xa. (
                2025071600      ; serial
                6h              ; refresh
                1h              ; retry
                1w              ; expire
                1d )            ; minimum

          NS     root-ns1.xa.
          NS     root-ns2.xa.


root-ns1.xa.     A      127.16.1.27
root-ns1.xa.     AAAA   fda1:b2:c3::127:16:1:27

root-ns2.xa.     A      127.16.1.28
root-ns2.xa.     AAAA   fda1:b2:c3::127:16:1:28

$ORIGIN delegation01.xa.
@                NS     ns1
@                NS     ns2

ns1              A      127.16.1.21
ns1              AAAA   fda1:b2:c3::127:16:1:21
ns2              A      127.16.1.22
ns1              AAAA   fda1:b2:c3::127:16:1:22

$ORIGIN delegation01.xb.
@                NS     ns1
@                NS     ns2

ns1              A      127.16.1.25
ns1              AAAA   fda1:b2:c3::127:16:1:25
ns2              A      127.16.1.26
ns1              AAAA   fda1:b2:c3::127:16:1:26



;EOF