OS X Modems Not Connecting to SIngle Specific Web SIte

4 Netgear N600 modems connected to 4+ Macs.

Modems are working normally except that 2 can see a specific web site and 2 cannot. The 2 problem modems can see all other sites. Problem started 4 hours ago.

Power cycling network?

Have tried powering down, hard reset, clearing caches and cookies.

Does anyone have any thoughts please? There are some, old, Google mentions but no solutions.
tweddlewalkerAsked:
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tweddlewalkerAuthor Commented:
4 Netgear N600 modems connected to 4+ Macs.

Modems are working normally except that 2 can see a specific web site and 2 cannot. The 2 problem modems can see all other sites. Problem started 4 hours ago.

Power cycling network?

Have tried powering down, hard reset, clearing caches and cookies.

Does anyone have any thoughts please? There are some, old, Google mentions but no solutions.
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Dave BaldwinFixer of ProblemsCommented:
What is the web site and what browser are you using to connect to it?  You might try moving one of the computers with the problem to a different modem to see if the problem follows the computer.  If it does, then the computer is the problem and not the modem.
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strungCommented:
Try pinging the problem website from each Mac and seeing if the name resolve to a different IP address on the computers that can connect from the ones that can't.

Also try trace route.
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strungCommented:
Also on each Mac go to the Network settings, hit the Advance button, then the DNS tab and see if all Macs are using the same DNS server.
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tweddlewalkerAuthor Commented:
Found out what the problem was.  Was our ISP
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