1&1 Ionos

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1&1 Ionos
Type of site
HeadquartersMontabaur, Germany
Area servedWorldwide
OwnerUnited Internet
Founder(s)Ralph Dommermuth
Key peopleAchim Weiss[1] (CEO)
Revenue$135 million (2019)[2]

1&1 Ionos (styled as 1&1 IONOS, formerly 1&1 Internet), is a web hosting company. It was founded in Germany in 1988 and is currently owned by United Internet. In addition to web hosting, it also provides domain registration, SSL certificates, email services, website builder packages and cloud hosting, as well as virtual private servers and dedicated servers. The company has two headquarters, one in Montabaur, Germany, and the other in Chesterbrook, Pennsylvania. It has approximately 2,000 employees in 40 countries, with eight million customers, ten data centers and over 90,000 servers. The company's CEO is Achim Weiss.

1&1 is also known as 1&1 Telecommunication, an Internet service provider and mobile network operator in Germany.


In 2000, the company changed its name to United Internet and moved its product business to 1&1 Internet AG. In the same year, 1&1 began operating in the United Kingdom, and three years later began serving United States customers. One of the company's biggest North American data centers is located in Lenexa, Kansas, which houses more than 40,000 servers.[3]

In 2018, 1&1 merged with cloud infrastructure specialists ProfitBricks (founded by Achim Weiss) and rebranded as 1&1 Ionos. The rebrand involved a name change and a slightly redesigned Web site, but the service offerings and prices initially stayed the same. However, 1&1 Ionos introduced some new services the following year, including a personal consultant service for customers.[4] As of September 2019, 1&1 Ionos held second place in a ranking of the market share of global Web hosting providers.[5]

Weiss described the reasons for the rebrand, stating:

"As this new company is more than just a hosting provider, we have opted for a new name — and Ionos fits perfectly. It is inspired by the ionosphere; the upper part of the Earth's atmosphere that contains a high concentration of ions and free electrons. It is inspiring to look at, whether viewing from down on Earth, or up in outer space and is, of course, situated in the clouds."[6]

Eco-friendly efforts[edit]

1&1 Ionos uses sustainable methods to reduce carbon emissions, including the use of 100% renewable energy in data centers and administrative buildings in the UK and Germany. The carbon is offset in other locations across the world with green certificates or by using local renewable sources.[7]

Server outages[edit]

In April 2019, customers in the United Kingdom complained of lengthy server outages due to a malfunctioning uninterruptible power supply (UPS), which resulted in Web sites being offline. Call center staff were also unable to answer customer questions due to support tools not functioning properly. 1&1 Ionos eventually fixed and addressed the issue, stating: "For when such cases occur, we have UPS systems and emergency power generators that ensure power supply is uninterrupted during an emergency. One of the five UPS systems in the affected data center suffered a technical malfunction, which meant several servers suffered a temporary loss of power and had to be restarted. As file systems had to be repaired after the power failure, some servers were not immediately available again. We're continuing to look into the cause of the error of the affected UPS system, however all UPS systems are working properly again."[8]


  1. ^ "1&1 IONOS Newsroom". 29 October 2018. Retrieved 14 November 2018.
  2. ^ "1&1 Ionos's Competitors, Revenue, Number of Employees, Funding and Acquisitions". www.owler.com. 25 October 2019. Archived from the original on 25 October 2019. Retrieved 25 October 2019.
  3. ^ Nucci, Cora (30 September 2008). "Inside 1&1's Giant Web Hosting Data Center". InformationWeek. Retrieved 25 October 2019.
  4. ^ "Your personal consultant". IONOS. Retrieved 25 October 2019.
  5. ^ "Global Web Hosting Market Share October 2019". Hostadvice. Retrieved 25 October 2019.
  6. ^ Spadafora, Anthony. "With a new branding, 1&1 Ionos wants to be more than just a hosting provider". www.techradar.com. techradar. Retrieved 25 October 2019.
  7. ^ "Sustainability Report 2018" (PDF). United Internet. Retrieved 25 October 2019.
  8. ^ Oates, John (18 April 2019). "Server at web host 1&1 Ionos decides to take unscheduled day off, sinks a bunch of sites". The Register. Retrieved 25 October 2019.