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Hetzner Online GmbH
Logo Hetzner.svg
Type of businessGesellschaft mit beschränkter Haftung
HeadquartersGunzenhausen, Bavaria, Germany
Founder(s)Martin Hetzner
IndustryWeb hosting, SSL certificates, Colocation, Domain registration
Revenue148 mio (2016)
Net income48 mio (2016)
Employeesca. 220 (2017), 184 (2016)

Hetzner Online GmbH is an Internet hosting company and data center operator based in Gunzenhausen, Germany.

It should not be confused with its South African namesake and partner company, Hetzner (Pty) Ltd — the two are separate companies registered and incorporated in their own rights under the applicable country laws. They do not have the same shareholders.


Hetzner Online GmbH (Gesellschaft mit beschränkter Haftung) began operations in Germany in 1997[1] under the name Hetzner Online Services. Between 2000 and 2015, Hetzner Online in Germany operated under the legal status AG ("Aktiengesellschaft"). In 2015, it changed its legal status to GmbH. In addition, Hetzner Online expanded its chief executive team with Stephan Konvickova and Günther Müller at the beginning of the year 2019. [2]

The company is named after its founder Martin Hetzner. Hetzner Online owns and operates three data center parks in Nuremberg[3] and Falkenstein/Vogtland (Germany), and Helsinki (Finland).[4][5][6][7] In addition, Hetzner Online is a co-investor in the Cinia C-Lion1 project, which connected Helsinki and Rostock, Germany together with a 1,100 km long submarine fiberglass cable. The cable provides a high-speed connection between Hetzner's German and Finnish data centers.[8][9]

In 2017, Hetzner Online celebrated its 20th anniversary with a multi-day event at its data center park in Falkenstein. The event, "Willkommen im Internet", included technical workshops, a tour of the facility, and a public, open-air concert by Austrian singer, Christina Stürmer.[10]

The head office of Hetzner Online is based in Gunzenhausen, Bavaria, in Germany. It has a partner company in South Africa: Hetzner South Africa (Pty.) Ltd.[11] which operates data centers in Midrand[12][13] and Cape Town (South Africa).[11][14]


Hetzner Online provides dedicated hosting, shared web hosting, virtual private servers, managed servers, domain names, SSL certificates, storage boxes[15], and cloud solutions. At the data center parks located in Nuremberg, Falkenstein and Helsinki/Finnland, customers can also connect their hardware to Hetzner Online's energy-efficient and state of the art infrastructure and network with the company's colocation services.[16] The company operates a server auction site online where older servers are auctioned off in the form of a Dutch auction.[citation needed]

Hetzner Online has a domain name registrar arrangement with ICANN (for registering domains under .com, .net and .org and others),[17] DENIC (for .de),[18] and nic.at (for .at).[19]


Hetzner Online's datacenter projects are coordinated and implemented in-house with as little outsourcing as possible. Data center units served by multiple redundant uplinks, including 300 Gbit/s to DE-CIX and fiber optic links to Nuremberg and Frankfurt. Colocation facilities are sited at all data center parks in Nuremberg, Falkenstein/Vogtland in Germany and Helsinki in Finland.[20]

Energy usage[edit]

Energy for normal operations at the data center parks is used exclusively from renewable sources, in Germany from hydropower and in Finland from wind power. In the German data center parks, this energy is provided by Energiedienst AG.[21][22] In addition the company strives to conserver energy with its use of direct free cooling, double-height raised floor, components selected on the basis of energy-consumption, waste heat recycling, and intelligent lighting solutions. In 2011, TÜV SÜD certified Hetzner's data centers as an "Energy Efficient Enterprise".[23]

To prevent possible faults caused by problems with the electrical network, Hetzner Online obtains its power in a redundant manner from the network provider. The current is fed from the neighbouring transformer station to the redundant transformers via two separate lines. The A/B busbar concept, in conjunction with the use of static transfer switches (STS), ensures a higher availability of the power supply. The redundant modular UPS system is able to secure the complete power supply in case of a module failure. In the event of a longer power failure, a diesel generator takes over the entire power supply of the data center. In addition, a battery monitoring system permanently monitors the condition of the battery blocks.[24]

Cooling system[edit]

Direct free cooling is used for cooling IT hardware. In contrast to conventional systems, this method uses outside air for cooling. If the outdoor temperature rises, the system automatically switches to mixed operation and cools the air via compressors. The cold air is then directed to the air intakes of the servers via the raised floors. This is made possible by cold aisle containment, in which the currents of cold and warm air are separated and deliberately channeled in specific directions. The warm air in the corridors and near the ceiling of the data center are channeled out through the roof in a concentrated manner. The remaining "waste heat" is not wasted. In fact, it is used to heat offices. This system, which was designed in house, not only effecitvely cools the hardware; it also reduces the use of cold air and increases the efficiency of cooling, thereby reducing energy consumption.[25]


The backbone is set up in the form of a ring network between the datacenter locations Nuremberg and Falkenstein as well as the most important Internet location, Frankfurt. All locations are connected to central exchange nodes such as DE-CIX, AMS-IX, DATA-IX and V-IX via the company's own fiber optic network.[26] All Hetzner servers had a 20TB monthly cap for full speed on their servers with the option for an extra fee for full speed past that point, however, have lifted the bandwidth cap on 1Gbps connection speeds as of October 1.[27][28][29]

Energy Efficiency Monitoring System[edit]

An extensive array of measuring devices enables the Hetzner Online team to closely monitor energy consumption and analyze the quality of the power network in real time. The system measures power consumption 24/7 at different intervals at all levels in the data center and sends warnings if it finds of anomalies. A remote-readable software calculates important key figures, such as PUE/EER, and identifies optimization potentials.


The internationally recognized standard for information security certifies that Hetzner Online GmbH has established and implemented an appropriate information security management system (ISMS). Hetzner Online utilizes the ISMS in its infrastructure and complete operations for the data center parks in the Nuremberg and Falkenstein locations. FOX Certification, a third party certification authority, audited Hetzner Online's data center parks for the certification process. The datacenter parks are thus certified in accordance to ISO/IEC 27001.

This certification confirms that Hetzner Online will uphold strict information security standards. It states that Hetzner Online provides up-to-standard systems for security management, data security, data confidentiality and availability of IT systems. The certificate proves adequate security management, data security, confidentiality of information and availability of IT systems. It also confirms that the safety standards are continuously improved and sustainably monitored.[30][31]


Hetzner Online is a sponsor of a variety of humanitarian and educational charity organizations. Sponsoring activities in the past include Habitat for Humanity Germany and their building projects in Africa.[32] In 2010, Hetzner Online donated setup fees received from new orders during the football World Cup 2010 to the Youth Build Project 2010.[33] In 2012 Habitat for Humanity Germany patron, actress Alexandra Neldel travelled to Mozambique and South Africa to learn more about Hetzner Online's projects. The company received the Habitat for Humanity Corporate Partnership Award in 2012.[34] In addition, Hetzner Online has sponsored several non-profit organizations located in the communities near its data center parks.



In June 2013, Hetzner Online suffered from a security breach where customer information was exposed to attackers who had compromised Hetzner Online's monitoring systems.[35][36]

Russian complaints about Glavcom.ua[edit]

In early August 2014, the Russian Federal Service for Supervision of Communications, Information Technology and Mass Media (Roskomnadzor) sent a demand to many news agencies, including BBC, prohibiting any mention of the demonstration that was being arranged in the Siberian city of Novosibirsk in support of the federalization of Siberia.[37][38] A number of such messages were sent to Ukraine, which was in the midst of undeclared war with Russian paramilitary in Donetsk region.[39] Since the Ukrainian online newspapers did not remove the article, Roskomnadzor sent letters to their Internet providers demanding removal of the news item. Hetzner Online complied with the demands and sent a notice to glavcom.ua, saying "Please solve the problem and reply within the next 24 hours to avoid suspension. This is the final deadline."[40]

This story was widely reprinted in news sources.[41] Ukrainian Ministry of Foreign Affairs issued a statement expressing solidarity with glavcom.ua owners and journalists. Vassily Zvarych, vice-head of Communications Department of Foreign Ministry, gave a press conference saying that he was surprised by Hetzner Online's compliance with the Russian complaint.[42] Also, a German chapter of Reporters Without Borders issued a statement condemning Roskomnadzor.[43]

The notices to suspend Glavcom.ua were issued by Hetzner Online August 6, 2014; on August 10 Hetzner Online issued apologies, denying that any censorship was planned and that their technical support made a wrong decision, which they regret.[44] However, by that time the story was widely published in German mass-media,[45] and Glavcom.ua already migrated from Hetzner Online to another hosting provider.[46][47]

no.spam.ee lawsuit[edit]

In 2013, an Estonian anti-spam activist Tõnu Samuel posted a blog entry about an alleged spammer Silver Teede on his website no.spam.ee. In retaliation, Teede wrote a complaint to the blog's service provider, Hetzner Online, who decided to terminate services for the blog. In an ensuing court case, Estonian courts found the complaints to be baseless and awarded Samuel damages for the loss of his servers.[48][49][50]

blocking "Novaya Gazeta"[edit]

On January 11, 2016, Hetzner blocked the St. Petersburg site of Novaya Gazeta, the leading oppositional, non-governmental newspaper in Russia.[51] The newspaper marked the act as political censorship without any legal procedure.[52]


  • 2007 eco Internet Award, "Verband der deutschen Internetwirtschaft" (Association of the Internet Industry)[53]
  • 2007 Bayerns best 50
  • 2011 Green IT Best Practice Award[54][55]
  • 2011 eco Internet Award, Association of German Internet Industry[56]
  • 2012 funkschau journal Carrier & Provider Award[57]
  • 2012 PC WELT trade press Technology Winner Brand Awareness International[58]
  • 2012 Bavaria's Best 50 fastest growing businesses in Bavaria[59]
  • 2012 Shortlisted for 5th Data Centres Europe 2012 Awards[60]
  • 2012 Finalist Datacenterdynamics EMEA Awards 2012[61]
  • 2013 Funkschau Journal "Carrier & Provider Award[62]
  • 2013 Shortlised for International Datacentre & Cloud Awards 2013[63]
  • 2014 PC WELT Brand of the Year and Technology Winner Brand Awareness International[64]
  • 2015 Deloitte Technology Fast 50 Award; "Sustained Excellence Award"[65]
  • 2015 "Carrier and Provider of the Year" Funkschau Leserwahl (Reader's Choice) Award[66]
  • 2015 Bayerns Best 50 Award[67]
  • 2016 Hosting Awards[68]
  • 2016 European Business Award[69]
  • 2017 Hosting Award in the "VPS/vServer" category[70][71]
  • 2018 Hosting & Service Provider Award in the "Cloud Service Provider" category[72]
  • 2018 Hosting & Service Provider Award in the "Webhosting" category[73]

Memberships in trade organizations[edit]


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  37. ^ BBC: "Блог редактора: Артем Лоскутов и "федерализация Сибири"
  38. ^ BBC World Service statement regarding interview with Artem Loskutov
  39. ^ Bloomberg: Ukraine in ‘Undeclared War’ With Russia as Rebels Unite
  40. ^ Немцы заблокируют «Главком» за то, что он не удалил статью по требованию Роскомнадзора
  41. ^ Webhoster Hetzner: Deutsche Firma hilft russischer Medienaufsicht bei Zensur
  42. ^ МИД Украины удивлен позицией немецкого хостера, согласившегося с Роскомнадзором
  43. ^ Russische Zensurversuche im Ausland
  44. ^ Human rights in Ukraine: Russian censor will not be allowed to block Glavkom
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  46. ^ Роскомсвобода: Немецкий хостер хотел заблокировать украинский сайт по требованию Роскомнадзора, но извинился
  47. ^ Glavcom.ua: Немецкий хостер отказался блокировать «Главком» и извинился перед редакцией
  48. ^ Hans Lõugas (29 October 2013). "Laimaja peab sotsiaalmeedias vabandust paluma". Eesti Päevaleht.
  49. ^ Sander Silm (28 October 2013). "Netilaimaja peab maksma Tõnu Samuelile 11 150 eurot". Õhtuleht.
  50. ^ Silver Meikar (17 June 2013). "Silver Meikar: avatus ja läbipaistvus taastaks usalduse". Postimees.
  51. ^ Немецкий провайдер заблокировал сайт «Новой газеты в Петербурге»
  52. ^ Осторожно, цензура!
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  55. ^ 2011 Green IT Best Practice Award
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  79. ^ "Overview of all nic.at registrars". 2017-11-21.

External links[edit]