On 12/03/08 12:36, Larry Daberko wrote:
I am unable to resolve www.yahoo.com. Tracing DNS back from the root servers shows that www.yahoo.com is a CNAME to www.wa1.b.yahoo.com and there are no A records for that hostname.
Anyone have more details or a Yahoo contact? I'm unable to get to their webpage as it is :-)
-Larry Daberko iServe Technologies
$ dig @ns1.yahoo.com www.yahoo.com
; <<>> DiG 9.4.2 <<>> @ns1.yahoo.com www.yahoo.com ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56431 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; WARNING: recursion requested but not available
;; QUESTION SECTION: ;www.yahoo.com. IN A
;; ANSWER SECTION: www.yahoo.com. 300 IN CNAME www.wa1.b.yahoo.com.
;; AUTHORITY SECTION: wa1.b.yahoo.com. 300 IN NS yf1.yahoo.com. wa1.b.yahoo.com. 300 IN NS yf2.yahoo.com.
;; ADDITIONAL SECTION: yf1.yahoo.com. 1800 IN A 68.142.254.15 yf2.yahoo.com. 1800 IN A 68.180.130.15
;; Query time: 15 msec ;; SERVER: 68.180.131.16#53(68.180.131.16) ;; WHEN: Wed Dec 3 15:34:09 2008 ;; MSG SIZE rcvd: 123
but looking up the host itself gives no answer
$ dig @ns1.yahoo.com www.wa1.b.yahoo.com
; <<>> DiG 9.4.2 <<>> @ns1.yahoo.com www.wa1.b.yahoo.com ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34875 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2 ;; WARNING: recursion requested but not available
;; QUESTION SECTION: ;www.wa1.b.yahoo.com. IN A
;; AUTHORITY SECTION: wa1.b.yahoo.com. 300 IN NS yf1.yahoo.com. wa1.b.yahoo.com. 300 IN NS yf2.yahoo.com.
;; ADDITIONAL SECTION: yf1.yahoo.com. 1800 IN A 68.142.254.15 yf2.yahoo.com. 1800 IN A 68.180.130.15
Well, since ns1.yahoo.com isn't authoritative for wa1.b.yahoo.com, then I wouldn't expect it to have the answer. Trying yf1.yahoo.com:
dig www.wa1.b.yahoo.com. @yf1.yahoo.com
; <<>> DiG 9.4.2-P1 <<>> www.wa1.b.yahoo.com. @yf1.yahoo.com ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31055 ;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;www.wa1.b.yahoo.com. IN A ;; ANSWER SECTION: www.wa1.b.yahoo.com. 60 IN CNAME www-real.wa1.b.yahoo.com. www-real.wa1.b.yahoo.com. 60 IN A 209.131.36.158 ;; Query time: 3 msec ;; SERVER: 68.142.254.15#53(68.142.254.15) ;; WHEN: Wed Dec 3 12:55:24 2008 ;; MSG SIZE rcvd: 76 It's a chain of CNAME records, which isn't very nice, but isn't technically illegal. In most cases, it's resolvable. Not what I would do for a globally-reachable revenue-generating service, but I am sure they have their reasons. michael