Homework 3 is giving me some problems.

nslookup -type=MX www.loyola.edu
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
;; connection timed out; no servers could be reached

nslookup -type=PTR 254.169.in-addr.arpa
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
;; connection timed out; no servers could be reached

Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: 172.16.0.254
Address: 172.16.0.254#53

Non-authoritative answer:
Name: www.maths.leeds.ac.uk
Address: 129.11.36.6

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