gavinhungry / dnsmess

IPv4 DNS (reverse) lookup tool

dnsmess

An IPv4 DNS lookup/reverse lookup tool with full request/response output. The DNS server used is hardcoded to Google Public DNS (see dnsmess.h).

Usage

$ make
$ dnsmess [DOMAIN | IP]

Example

$ dnsmess google.com

DNS Query (28 bytes):
47 4C 01 00 00 01 00 00 00 00 00 00 06 67 6F 6F  GL...........goo
67 6C 65 03 63 6F 6D 00 00 01 00 01 -- -- -- --  gle.com.....

DNS Response (204 bytes):
47 4C 81 80 00 01 00 0B 00 00 00 00 06 67 6F 6F  GL...........goo
67 6C 65 03 63 6F 6D 00 00 01 00 01 C0 0C 00 01  gle.com.........
00 01 00 00 00 35 00 04 AD C2 21 06 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 0E C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 07 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 02 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 00 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 03 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 04 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 05 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 08 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 09 C0 0C 00 01  .....5....!.....
00 01 00 00 00 35 00 04 AD C2 21 01 -- -- -- --  .....5....!.

IPv4 address(es) for google.com:
  173.194.33.6
  173.194.33.14
  173.194.33.7
  173.194.33.2
  173.194.33.0
  173.194.33.3
  173.194.33.4
  173.194.33.5
  173.194.33.8
  173.194.33.9
  173.194.33.1

Reverse DNS

$ dnsmess 173.194.33.6

DNS Query (43 bytes):
47 4C 01 00 00 01 00 00 00 00 00 00 01 36 02 33  GL...........6.3
33 03 31 39 34 03 31 37 33 07 69 6E 2D 61 64 64  3.194.173.in-add
72 04 61 72 70 61 00 00 0C 00 01 -- -- -- -- --  r.arpa.....

DNS Response (81 bytes):
47 4C 81 80 00 01 00 01 00 00 00 00 01 36 02 33  GL...........6.3
33 03 31 39 34 03 31 37 33 07 69 6E 2D 61 64 64  3.194.173.in-add
72 04 61 72 70 61 00 00 0C 00 01 C0 0C 00 0C 00  r.arpa..........
01 00 00 54 5F 00 1A 0E 73 65 61 30 39 73 30 31  ...T_...sea09s01
2D 69 6E 2D 66 36 05 31 65 31 30 30 03 6E 65 74  -in-f6.1e100.net
00 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --  .

Domain name(s) for 173.194.33.6:
  sea09s01-in-f6.1e100.net

License

dnsmess is released under the terms of the MIT license.