This is one of Triple Pat's redundant master check-in servers. You can check-in here if you want, but we recommend either only using the main site (triplepat.com or triplepat.net), or, preferably, using failover with a list of all possible mirrors:
We use triplepat.com and triplepat.net from different DNS registrars and providers for redundancy and reliability. We encourage your checkin scripts to use both TLDs for failover purposes.
To find out more about Triple Pat, visit triplepat.com.