Please be advised that the
ipid.shat.net IP address echo service has been permanently discontinued.
Way back in 1999, when many of us still got a new IP address every time we dialed into the internet, I set up a page at
ipid.shat.net with a server-side include (remember those?) to echo the value of
REMOTE_ADDR. That little service caught on quickly. It was added into several dynamic DNS clients and various other projects with a need to determine the user's IP. I eventually took the service down in 2013, given the myriad other options available; you can just Google "IP address" to get it, now.
In late 2017, I was debugging a DNS issue and was surprised to see how many queries were still coming in for the
ipid label. I decided to spin the site back up on a spare VPS and see what sort of traffic it would get. After leaving it running for a few days, it eclipsed 500 hits per second (!) and the socket churn began to overwhelm the VM. Instead o...