I have DNSMadeEasy's monitoring/failover service. While I use it for the failover, I don't think their monitoring seems very accurate.
I check the site as soon as they say it's down and it hasn't been down once when I check.
Not to mention, their numbers really clash with host-tracker.com, which shows the site at 99.98% for the last 16 days, with 5 minute checking intervals. That's barely over 3 minutes of downtime.
On an unrelated not, I put host tracker on two different DH domains a week ago, one set at 1 minute intervals and the other set at 30 minutes--just to see the difference in results.
So far, it's only been 7 days and both read 100%. While it's useless info for my little test, it's much different than the results you're getting.
One DH domain that's been monitored for 16 days, which covered some downtime, still reads at 99.86% with 5 minute intervals.
Anyway, I'd setup a host-tracker.com account for the same domain and see how the results vary from DNSMadeEasy.
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