Multi-Site Domain Monitoring with Database and E-mail warnings.

I run several websites, across several different webhosts. Some of which are a LOT flaky (000webhost,x10hosting). The ping times for these sites can be appalling.

I wanted to know HOW appalling.

So I have written a system from scratch, using php and mysql.
The names of the domains to check are kept in a database table, which the script then processes. All it does is "ping" each server in turn, and save the results in another table, datestamped. If a domain doesn't respond, it e-mails me, and tells me which one.

The script is installed on one of my paid hosting sites, and is being run hourly as a cron job via utopia cron in wordpress. Although it would work just fine as a proper cron job..

I will be building a table of response times (and downtime) for the free hosting services I use.

How long before they block my pings?

It's just occurred to me that I could install this on all my sites, and have them all monitor each other.. Hmm..