Most Reliable Hosting Company Sites in May 2009

Rank Company site OS Outage
DNS Connect First
1 New York Internet FreeBSD    0.000  0.266 0.042 0.086 0.180
2 pair Networks FreeBSD    0.000  0.319 0.055 0.113 0.248
3 INetU unknown    0.000  0.768 0.063 0.133 0.264
4 Swishmail FreeBSD  0:00:00  0.005  1.101 0.040 0.081 0.208
5 Verio Linux  0:00:00  0.005  2.233 0.068 0.137 0.137
6 Virtual Internet Windows Server 2003  0:00:00  0.005  0.715 0.092 0.342 0.688
7 Server Intellect Windows Server 2003  0:00:00  0.010  0.929 0.039 0.079 0.184
8 unknown  0:00:00  0.010  1.310 0.044 0.096 0.140
9 Kattare Internet Services Linux  0:00:00  0.010  0.371 0.090 0.182 0.480
10 Linux  0:00:00  0.014  3.799 0.066 0.136 0.327

See full table

New York Internet, pair Networks and INetU had the most reliable hosting company sites in May 2009. Each of these sites responded resiliently to Netcraft's performance collectors throughout the month, with not a single failed request.

This is New York Internet's second consecutive appearance at the top. Established in 1996, the company's core services now include dedicated servers, colocation and virtual web hosting - all backed with a 99.999% uptime guarantee.

pair Networks also started off in 1996, with a $10,000 family loan funding a single employee and a partial T-1 line. The company has since grown to offer dedicated servers, virtual private servers and high volume hosting from its own datacentres in Pennsylvania, which use GigE connections to five diverse backbone networks.

INetU is an enterprise managed hosting company, also located in Pennsylvania. They stand by their network performance by offering a 100% uptime service level agreement. Managed services provided by INetU include MySQL and MS SQL database clusters, Exchange servers, virtualization and firewalls. Their clients include Fortune 500 companies such as Microsoft, Intel and Northrop Grumman.

Among May's top ten hosting company sites, three companies (including New York Internet and pair Networks) run their sites on FreeBSD. Three other companies run their sites on Linux, while the remaining two identifiable operating systems are Windows Server 2003.

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 customer's point of view, the percentage of failed requests is more pertinent than outages on 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.

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