Tiscali is the most reliable hosting company site for June 2007, followed closely by DataPipe and EasyNet. This marks the second time Tiscali has edged out Datapipe, duplicating the result from last November.

Tiscali, a European provider of hosting and Internet access services, finished atop our table three times in 2006 and once in 2005. Tiscali is based in Cagliari, Italy, with operations in the UK, Germany, The Netherlands and Czech Republic. The company offers shared hosting, dedicated servers, colocation and domain names in addition to a wide range of telecom services.

Web.com, which is ninth in our rankings this month and led the table in January 2007, was acquired by WebSitePros last week.

Two of the 10 most most reliable hosts run their web sites on Windows, four on Linux and two on FreeBSD.

Netcraft measures and makes available the response times of fifty leading hosting providers' sites. The performance measurements are made at fifteen minute intervals from separate points around the internet, and averages are calculated over the immediately preceding 24 hour period.

From a customers’ point of view, the percentage of failed requests is more pertinent than outages on the hosting companies’ own sites, as this gives a pointer to reliability of routing, and this is why we choose to rank our table by fewest failed requests, rather than shortest periods of outage.

Fuller information on the measurement process and current measurements are available.