weblog d’un abbe

20070908

Wanna trace DNS lookup path

Filed under: Research — abbe @ 1222
[wj@lap0 ~]$ dig +trace wahjava.wordpress.com

; <> DiG 9.4.1-P1 <> +trace wahjava.wordpress.com
;; global options:  printcmd
.                       505277  IN      NS      A.ROOT-SERVERS.NET.
.                       505277  IN      NS      B.ROOT-SERVERS.NET.
.                       505277  IN      NS      C.ROOT-SERVERS.NET.
.                       505277  IN      NS      D.ROOT-SERVERS.NET.
.                       505277  IN      NS      E.ROOT-SERVERS.NET.
.                       505277  IN      NS      F.ROOT-SERVERS.NET.
.                       505277  IN      NS      G.ROOT-SERVERS.NET.
.                       505277  IN      NS      H.ROOT-SERVERS.NET.
.                       505277  IN      NS      I.ROOT-SERVERS.NET.
.                       505277  IN      NS      J.ROOT-SERVERS.NET.
.                       505277  IN      NS      K.ROOT-SERVERS.NET.
.                       505277  IN      NS      L.ROOT-SERVERS.NET.
.                       505277  IN      NS      M.ROOT-SERVERS.NET.
;; Received 372 bytes from 172.18.33.1#53(172.18.33.1) in 1 ms

com.                    172800  IN      NS      I.GTLD-SERVERS.NET.
com.                    172800  IN      NS      H.GTLD-SERVERS.NET.
com.                    172800  IN      NS      A.GTLD-SERVERS.NET.
com.                    172800  IN      NS      B.GTLD-SERVERS.NET.
com.                    172800  IN      NS      F.GTLD-SERVERS.NET.
com.                    172800  IN      NS      G.GTLD-SERVERS.NET.
com.                    172800  IN      NS      M.GTLD-SERVERS.NET.
com.                    172800  IN      NS      K.GTLD-SERVERS.NET.
com.                    172800  IN      NS      D.GTLD-SERVERS.NET.
com.                    172800  IN      NS      E.GTLD-SERVERS.NET.
com.                    172800  IN      NS      J.GTLD-SERVERS.NET.
com.                    172800  IN      NS      C.GTLD-SERVERS.NET.
com.                    172800  IN      NS      L.GTLD-SERVERS.NET.
;; Received 511 bytes from 192.33.4.12#53(C.ROOT-SERVERS.NET) in 333 ms

wordpress.com.          172800  IN      NS      ns1.wordpress.com.
wordpress.com.          172800  IN      NS      ns2.wordpress.com.
wordpress.com.          172800  IN      NS      ns3.wordpress.com.
;; Received 141 bytes from 192.5.6.30#53(A.GTLD-SERVERS.NET) in 931 ms

wahjava.wordpress.com.  300     IN      CNAME   wordpress.com.edgekey.net.
wordpress.com.          14400   IN      NS      ns1.wordpress.com.
wordpress.com.          14400   IN      NS      ns2.wordpress.com.
wordpress.com.          14400   IN      NS      ns3.wordpress.com.
;; Received 180 bytes from 72.232.101.25#53(ns1.wordpress.com) in 1021 ms

That’s all you need to do to trace DNS lookup path for wahjava.wordpress.com .

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