SubDomains not working.

Hello.

Currently I have created subdomains for one of my clients, the first three are working perfectly, but when I did the fourth my browser no longer reflected, as if the page does not exist, in fact, have created more subdomains nor have I worked.

Does anyone have any idea that could be happening?

 

Not work… another sugestions? I use the command "dig" and I see a difference with the answer:

Subdomain Bad

root@server [~]# dig test.domain.com

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.23.rc1.el6_5.1 <<>> test.domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 53708
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;test.domain.com. IN A

;; AUTHORITY SECTION:
domain.com. 3600 IN SOA ns1.dns.com. webmaster.dns.net. 2014020708 86400 7200 3600000 86400

;; Query time: 50 msec
;; SERVER: 10.0.80.11#53(10.0.80.11)
;; WHEN: Tue Feb 18 11:51:37 2014
;; MSG SIZE rcvd: 112

And the Good Subdomain

root@server [~]# dig wr.domain.com

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.23.rc1.el6_5.1 <<>> wr.domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12696
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;wr.domain.com. IN A

;; ANSWER SECTION:
wr.domain.com. 14400 IN A 184.173.78.*

;; Query time: 1 msec
;; SERVER: 10.0.80.11#53(10.0.80.11)
;; WHEN: Tue Feb 18 11:54:44 2014
;; MSG SIZE rcvd: 59


Any help?