Qube had the most reliable hosting company site in March, responding to all of Netcraft's requests. This continues Qube's strong performance from last year, where it placed in the top ten in eight months of 2015, and both January and February of 2016. Qube is based in London and offers a range of managed services, including private cloud hosting, from data centres in London, New York and Zurich.

In a very close second place, Netcetera also responded to every Netcraft request, but with a slightly longer average connection time. Netcetera owns and operates a carbon neutral data centre on the Isle of Man, and recently celebrated its 20th birthday, having been in the hosting business since 1996.

Datapipe takes third place in March, with two failed requests. Datapipe has an exceptionally consistent record for reliability, with its site maintaining 100% uptime over 10 years, and appearing in the top ten list on 42 occasions over the last 48 months.

Linux remains the most common choice of operating system amongst the most reliable hosting company sites, powering eight out of the top ten. Citrix Netscaler and FreeBSD also make an appearance, being employed by Kattare Internet Services and Pair Networks respectively.

Netcraft measures and makes available the response times of around forty 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. In the event the number of failed requests are equal then sites are ranked by average connection times.

Information on the measurement process and current measurements is available.

GoDaddy had the most reliable hosting company site in February, responding to every Netcraft request. This is the ninth consecutive month that GoDaddy has featured in the top 10, and the fourth time it has reached first place in the past 12 months.

Netcetera took second place in February with just one failed request. Based in the Isle of Man, Netcetera is celebrating its 20th birthday in 2016 with a series of special promotions. Over 11 years of monitoring by Netcraft, Netcetera has maintained a 99.96% uptime record.

Third place goes to Lightcrest, appearing in the top 10 for the third time in four months. Although both Lightcrest and XILO had two failed requests each, Lightcrest had a faster average connection time. Lightcrest's customers can use its Kahu Compute Fabric platform for Lightcrest-hosted deployments and those hosted remotely.

Linux remains the dominant choice of operating system among the most reliable hosting sites. This is the eighth consecutive month without any sites powered by Windows appearing in the top 10.

Netcraft measures and makes available the response times of around forty 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. In the event the number of failed requests are equal then sites are ranked by average connection times.

Information on the measurement process and current measurements is available.

With just a single failed request, Datapipe had the most reliable hosting company site in January. It featured in the top ten for all but one month in 2015 and last topped the table in July.

In second place in January was XILO Communications Ltd with just two failed requests. XILO’s website has maintained 100% uptime over the past year, and 99.990% since October 2011. XILO’s servers are located in Maidenhead, just outside London, and use XILO’s own network hardware.

Netcetera came in third place, also with just two failed requests, albeit with a slightly longer average connection time. Netcetera is based on the Isle of Man and has recently expanded its Dataport data centre where it offers carbon neutral shared, dedicated, and cloud hosting, as well as co-location options.

GoDaddy reached fourth place in January, marking its eighth consecutive appearance in the top ten. Since June, GoDaddy has maintained an impressive average connection time of just under eight milliseconds, with no single month's average being more than nine milliseconds.

As it did through the entirety of 2015, Linux has once again dominated as the most commonly used operating system amongst the top ten hosting company websites. The only two companies in January’s table not using Linux to host their websites are Swishmail (FreeBSD) and EveryCity (SmartOS).

Netcraft measures and makes available the response times of around forty 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. In the event the number of failed requests are equal then sites are ranked by average connection times.

Information on the measurement process and current measurements is available.

EveryCity had the most reliable hosting company site in December 2015. Despite moving into new offices, its website was the only one to respond to all of Netcraft's requests. EveryCity has maintained its 100% uptime record throughout 2015, and has made it into the top ten 11 times during the year. It also had the most reliable hosting company site in May.

In second place in December was Lightcrest, which also appeared in the top ten in November. It experienced only one failed request, with an impressively fast average connection time of 6 milliseconds. Lightcrest operates its cloud services using its own Kahu Compute Fabric infrastructure, without outsourcing any components to third-party cloud providers.

In third place – also with a single failed request, but with a slower average connection time – was One.com. Established in 2002, One.com now has over 270 employees with companies registered in Denmark, India and Dubai.

Six of December's top ten hosting company sites ran on Linux operating systems, while Swishmail used FreeBSD, Codero used a Citrix Netscaler device, and EveryCity used SmartOS. The latter is a community fork of OpenSolaris, featuring the ZFS file system, DTrace dynamic tracing, kernel-based virtual machines and Solaris Zones operating system-level virtualisation.

Netcraft measures and makes available the response times of around forty 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. In the event the number of failed requests are equal then sites are ranked by average connection times.

Information on the measurement process and current measurements is available.