Computer names (as on a LAN) use network name resolution not dns. URLs use
DNS.
A firewall could be disrupting pings, have you tried pinging their IP
address.
Also some IP addresses don't have DNS names, or the names are not available
for reverse lookup.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.