strange NS entry

[Krisztian Andre]

Why is my NS entry wrong? This is a ddns configuration.

db.unity-worldwide.lan :

$ORIGIN .
$TTL 259200     ; 3 days
unity-worldwide.lan     IN SOA  poseidon.unity-worldwide.lan. 
root.unity-worldwide.lan. (
                                200510045  ; serial
                                28800      ; refresh (8 hours)
                                7200       ; retry (2 hours)
                                2419200    ; expire (4 weeks)
                                86400      ; minimum (1 day)
                                )
                        *NS      
poseidon.unity-worldwide.lan.unity-worldwide.lan*.
                        TXT     "Unity-worldwide Imperial Mall"
$ORIGIN unity-worldwide.lan.
$TTL 300        ; 5 minutes
WORKSTATION01           A       192.168.0.57
                        TXT     "312a8fa7676a2680e0512b33ab1d16c292"
WORKSTATION02           A       192.168.0.56
                        TXT     "3106776331030d0235c72cf059021603dc"
workstation03           A       192.168.0.55
                        TXT     "31d7d5b5d66e249cd8c8d0756ae319937f"
WORKSTATION05           A       192.168.0.53
                        TXT     "3181bbc95c4fe0c266275603a4123ae337"
WORKSTATION07           A       192.168.0.27
                        TXT     "31d793f90e417ac48388a261dca9b079a6"