$ORIGIN .
$TTL 180
api.ustream.tv  IN SOA  customs.waw.hackerspace.pl. bofh.hackerspace.pl. (
                            1474143278 ; serial
                            1800 ; refresh (30 minutes)
                            1800 ; retry (30 minutes)
                            604800 ; expire (1 week)
                            10800 ; minimum (3 hours)
                            )
                    NS      customs.waw.hackerspace.pl.

$ORIGIN api.ustream.tv.
$TTL 300

@   IN  A   10.8.0.151