AIX, nslookup

I can ping an address, but can not find it in the nslookup

# ping 10.14.100.2
PING 10.14.100.2: (10.14.100.2): 56 data bytes
64 bytes from 10.14.100.2: icmp_seq=0 ttl=128 time=0 ms
64 bytes from 10.14.100.2: icmp_seq=1 ttl=128 time=0 ms

----10.14.100.2 PING Statistics----
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 0/0/0 ms
#
#
# nslookup 10.14.100.2
Server:         10.14.10.10
Address:        10.14.10.10#53

** server can't find 2.100.14.10.in-addr.arpa: NXDOMAIN

Select allOpen in new window

Am I reading this correctly

Should not this be impossible