Neutral Internet eXchange
Neutrální výměna dat, kvalitní a rychlá infrastruktura, efektivní komunikace, to je český peeringový uzel NIX.CZ



The next issue of NIX.CZ's newsletter has been published

The first page of the new issue of our quarterly newsletter informs about the recent CEE Peering Days conference, which was organized for the fourth time. Next we focus on the first anniversary of NIX.SK and the new record in data transmission in NIX.CZ. Last but not least we inform about the developments in the FENIX project in the past year.


4th CEE Peering Days hosted by Budapest

For the fourth time already, the representatives of ISPs, IXPs and data centres from all over the world met on 30th-31st March in Budapest to share their experience with issues related to interconnection. 

NIX.CZ Association arrived at the Budapest conference to present the recent activities of the Czech peering node, but also its NIX.SK and FENIX projects. Presentations by the Director of NIX.CZ Martin Semrád and other contributors are available on the conference website:

This year’s CEE Peering Days were also supported by the European Commission, namely through the START programme, which aims to fund cooperation in the Danube region. The fourth annual Peering Days were a ended by nearly 200 experts, including a large number from the Danube region; in addition to the specialists from the Czech Republic, Slovakia, Austria and of course Hungary, we also heard about the experience of colleagues from Bulgaria, Slovenia, Serbia or Montenegro. 


One Year Ago NIX.CZ Introduced the NIX.SK Project

The 4th annual CEE Peering Days begins in Budapest today. It was during the previous conference, which took place nearly a year ago in Bratislava, that the director of NIX.CZ Association Martin Semrád presented the newest updates regarding the NIX.SK project. This peering node has since celebrated its first year of operation. A quick review of the achievements and other developments it has encountered over the first 12 months.


We will begin with the networks connected. The peering node currently serves 32 networks, most recently Slovanet, Serbia Broadband, LightStorm Communications, UPC Czech Republic,, Delta OnLine and others. A complete list of networks is available on the project’s website. 

The next on the list is network security. Network safety is a key priority for NIX.CZ Association, the operator of the NIX.SK node. Last year, our key activities linked to NIX.SK included signing a memorandum with the Slovak national cybersecurity team CSIRT.SK. This partnership also involves organizing a series of working groups attended by the representatives of Slovak internet providers across the spectrum. We should also mention the interest these entities have expressed in joining the FENIX security project. 

Connecting the first public root server was also an important news, which has been available since October 2015 via the Slovak peering node NIX.CZ. Globally, J-Root is operated by the American company Verisign and its key advantage is being located directly in the peering centre, where it provides services to all of the networks connected.

Lastly, a note on the data flow speed currently available on the node. The graph on our website  shows our current maximum value to be 6.7 Gb/s. While certainly not enormous, the figure has been rising steadily. 

NIX.SK has entered its second year. Let us hope that it will at least as successful as the previous one.


The FENIX project in 2015: new members and interest from Slovak networks

Praha/Bratislava, 23 February 2016 – Three years ago, key Czech internet services were hit by massive DoS-type attacks. This significant security breach subsequently led NIX.CZ Association, the Czech peering node operator, to create the FENIX project, which is aimed at increasing its members’ ability to withstand DoS and DDoS-type attacks. In recent days, the project has celebrated its second anniversary. Initially founded by six organizations, its membership has since doubled and several new candidates are considering joining its ranks. Following the Association’s expansion to Slovakia, the project has stirred attention here as well, with up to 12 companies interested in creating a Slovak version of FENIX. ISP Alliance has been the most recent to join the Czech project. 


“In 2015, the number of active members grew by two more organizations – Web4U and MERIT GROUP. In the coming weeks, these should be joined by other institutions, which have expressed interest in becoming part of our security project. I can tell you that some of these candidates will be discussing the final details over the coming days. We should therefore soon be able to announce the names of several new members, companies that are not indifferent to the issues of internet security in this country,” the Director of NIX.CZ Martin Semrád said.


The Association’s last year’s expansion to Slovakia has also had a direct impact on the FENIX project. As part of the first working group, 12 organisations expressed their interest in the project, including BENESTRA, VNET or SK-NIC.


“During the first working group meeting, we explained the intended development of the Slovak NIX.SK node to our Slovak colleagues and we also presented the FENIX security project. We then opened up the discussion about its possible recreation in Slovakia. We are very grateful for the interest in security questions expressed by the local operators and we very much appreciate that they treat this subject as a priority,” Semrád said.


Another key event of 2015 related to the FENIX project was also the signing of a memorandum of cooperation between NIX.CZ and the Slovak cyber security team CSIRT.SK. Network security is a key aspect of this cooperation, thus also including the FENIX Project.


“NIX.CZ Association wishes to offer the companies connected to its peering node NIX.SK the possibility of becoming part of the Slovak version of the FENIX security project. One of the conditions of joining the project is having an in-house security team. This is precisely something that CSIRT.SK can help companies create.”


Taking part in the FENIX project requires the candidates to comply with a number of conditions, which are spelled out in the Project’s Rules. Members must for example have been connected to the NIX.CZ or NIX.SK for a certain period of time, they must be credible or must take active part in the working groups. By joining the FENIX Project, companies make a clear statement that they are especially committed to increasing the network security of their clients. 


The FENIX Project was founded by the Czech peering node operator NIX.CZ, as a reaction to the intense DoS attacks that occurred in March 2013. Its current members are: ACTIVE 24, Casablanca INT, CESNET, COOLHOUSING, CZ.NIC, ČD-Telematika, Dial Telecom, ISP Alliance, MERIT GROUP,, Web4U, O2 Czech Republic and


For more information, please go to:


NIX.CZ Association has broken a significant record in data transmission; the current maximum is 428 Gb/s.

Prague, 7 February 2016 – Today at 6:45pm, NIX.CZ Association, the Czech Republic’s national peering node, recorded a significant new increase in its maximum data transmission rate. The current record is now 428 Gb/s. The increase in the amount of data transmitted is due to a number of activities initiated by the Association in 2015.

Breaking the 400 Gb/s limit is mostly due to activities that have already been successfully completed. The year 2015 was exceptional for our Association especially regarding the number of newly connected networks. Last year we registered 19 of them, of which 10 are foreign. It is also worth pointing out that a number of these are from Poland; previously none of the Polish networks had been connected to NIX.CZ”, said the Director of NIX.CZ Martin Semrád. „Our plan is now to keep connecting other important networks to the NIX.CZ node. I believe that we will be able to announce the first names already in the coming weeks.“

The increase in the amount of data transmitted is undoubtedly also due to the last year’s increase in the number of 100 Gb ports, which doubled compared to the previous year. This year, NIX.CZ is planning to continue increasing the number of connections with this capacity.

“At the moment, we have ordered new 100 GB ports. Already during the first quarter, their number is going to match the overall increase for 2015. Last year we managed to streamline our infrastructure, which has enabled us to increase available capacities in order to further grow our traffic,” Adam Golecký, Technical Director of the Czech peering node, explained.

The increase in the amount of data transmitted obviously also has to do with the development of the Internet and its services, including the ever more popular media transmission, especially the transmission of live broadcasts.


The next issue of NIX.CZ's newsletter has been published

The new issue of our quarterly newsletter presents a comparison of the past and current network topology of the Czech peering node, informs about a new member of the FENIX security project, serves as a reminder to register for the next international CEE Peering Day 2016 conference, which will take place in Budapest and notifies about the entry of IX Reach into NIX.CZ’s Partner Programme. For detailed information, open the next edition of the newsletter NIX.CZ.