There is a site called "cichlidforums.com," which is different from "cichlid-forum.com." Up until recently, I could access the first site. Suddenly, one day, my browser cannot find it. However, when I go to work and use the computer there, I can find it with no problem. So I know they have a DNS but why can't I access it at home?
QUESTION POSED ON: 19 OCT 2005
QUESTION ANSWERED BY: Bob Konigsberg
I'm a little puzzled by this behavior as well. I tried it and had mixed results. It seemed to work better when I tried going to Cichlidforums.com first, as opposed to www.Cichlidforums.com.
Their name server configuration hasn't been changed in about a year, so that's not the problem. Try the following experiment at home (without the quote marks):
- Open up a command prompt (go to Start --> Run --> cmd and click on the OK button).
- Type Nslookup and hit Enter
- At the Nslookup ">" prompt type "set type=soa"
- At the Nslookup ">" prompt type "cichlidforums.com."
See what sort of answer you get. It should look like this:
Non-authoritative answer:
cichlidforums.com
primary name server = ns7.procentra.net
responsible mail addr = root.dallas.procentra.net
serial = 2004102801
refresh = 14400 (4 hours)
retry = 7200 (2 hours)
expire = 3600000 (41 days 16 hours)
default TTL = 86400 (1 day)
cichlidforums.com nameserver = ns7.procentra.net
cichlidforums.com nameserver = ns8.procentra.net
ns7.procentra.net internet address = 64.92.160.202
ns8.procentra.net internet address = 64.92.160.203
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If you don't get a reply similar to the one above, then you should contact your ISP and ask them why you can't resolve that DNS name. And don't take "Have you rebooted your computer?" for an answer. Ask them if they can resolve the name.
You should also check to see if your hosts file contains a bogus entry. Depending on your operating system, it will be one of the following locations (This assumes that your system boots from drive C:. If not, then substitute the appropriate drive letter):
C:\winnt\system32\drivers\etchosts (Windows NT and Windows 2000)
C:\windows\hosts (Windows 95, Windows 98, and Windows ME)
C:\windows\system32\drivers\etc.hosts (Windows XP, and Windows Server 2003)
/etc/hosts (Most flavors of Unix and Linux)
Are you running your own DNS at home or strictly using your ISP's? If you are running your own, check the caching values and the forwarder entries. Also see if you're running a DHCP server, that the DNS values and that it hands out to systems that are still valid and up to date.
There are some other less likely possibilities, but I'm leery of bringing them up in a public forum where someone might find them and then try to justify or explain all their problems that way.
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