Identifying the DNS server used to fulfill an HTTP request (2013) | Hacker News Reader

Identifying the DNS server used to fulfill an HTTP request (2013)

5f5.org

10 pointsamzans3 comments

This is old and may well be no longer functional: posted on January, 14 2013.

It seems that this no longer works:

  $ dig +trace webutils.flourishworks.com
  ...
  ...
  webutils.flourishworks.com. 300	IN	NS	 misc.firebase.com.
  couldn't get address for 'misc.firebase.com': not found
  dig: couldn't get address for 'misc.firebase.com': no more

    ; <<>> DiG 9.11.2-P1 <<>> webutils.flourishworks.com
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 41479
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

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