shell:$ nslookup -timeout=2 -retry=1 'elearning.nu.edu.sa'
Server: 75.98.161.224
Address: 75.98.161.224#53
Non-authoritative answer:
elearning.nu.edu.sa canonical name = www.nu.edu.sa.
Name: www.nu.edu.sa
Address: 212.26.74.15
;; communications error to 75.98.161.224#53: timed out
;; Got SERVFAIL reply from 69.39.86.5
** server can't find www.nu.edu.sa: SERVFAIL
| 