Can I use CNAME with ip address? Why If works (sometimes)?
- by Maciek Sawicki
I believe that the easiest answer for the first question is "No, You have "A" for this", but I accidentally setup some subdomain using CNAME pointing to ip address and it worked on few computers in my office. I wonder how it was possible?
Now, when I'm checking it from home I have following error:
beast:~ viroos$ host somesubdomain.somedomain.com
Host somesubdomain.somedomain.com not found: 3(NXDOMAIN)
I'm 100% it used to work at my office (currently it looks like it doesn't, but I'm checking it on different machine). Therefore I'm not 100% if it worked due to some special network setup or because I tested it just after adding DNS entry.
I know this story sounds, a little crazy/incredibly, but can someone help me solve this puzzle.
//edit: I'm adding dig output
; <<>> DiG 9.6-ESV-R4-P3 <<>> somesubdomain.somedomain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 60224
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;somesubdomain.somedomain.com. IN A
;; ANSWER SECTION:
somesubdomain.somedomain.com. 67 IN CNAME xxx.xxx.xxx.xx1.
;; AUTHORITY SECTION:
. 1800 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2012040901 1800 900 604800 86400
;; Query time: 72 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Tue Apr 10 00:11:01 2012
;; MSG SIZE rcvd: 136
