NIX.CZ allows you to connect, interact and share in whole new ways.
Gbps (Current data flow)
Chart of interconnected nodes (five-minutes average)
Neutral Internet eXchange





PEAK (Tbps)




NIX.SK – Neutral Internet eXchange for the Slovakia and Beyond!

NIX.SK is an independent peering node operated by the NIX.CZ Association since 2015. NIX.SK associates Slovak, and foreign Internet related businesses in order to mutually interconnect their networks. Access to the infrastructure of NIX.SK is enabled through three collocations in Bratislava.

Currently, NIX.SK is the only IXP in Slovakia, which enables connection into three geographically detached locations. From mid 2019 networks connected in these locations can also connect to the NIX.CZ node. NIX.SK encourages and facilitates the IPv6 protocol and was the first IXP to offer route server services in Slovakia. Consistent and meticulous planning, sophisticated technical solutions and a 24/7/365 technical support have led to a failure-free operation of the node.

NIX.SK is a subsidiary of NIX.CZ, a dynamic company, which actively participates in the development of the Internet. Through General Meetings, working groups and social events NIX.CZ enables its members and customers to meet, not as competitors but as allies, cooperating on the future of the association.

How to connect

Connecting to our exchange is very simple. If you are a company that meets all the formal requirements and you can provide us with the necessary documentation regarding your Autonomous System (AS), fill in the application form and send it to The initial requirements are described in the Entry conditions,Operating Rules and in the Articles of Association.

Recently connected networks s.r.o.
AS: 12570
from: 01.10.2021
TomaNet, s.r.o.
AS: 212974
from: 02.10.2020
Subspace Communication LLC
AS: 32261
from: 17.08.2020
CZ.NIC z.s.p.o.
AS: 200070
from: 26.06.2020
WebSupport, s.r.o.
AS: 51013
from: 26.06.2020 s.r.o.
AS: 12570
from: 01.10.2021
TomaNet, s.r.o.
AS: 212974
from: 02.10.2020
Subspace Communication LLC
AS: 32261
from: 17.08.2020
CZ.NIC z.s.p.o.
AS: 200070
from: 26.06.2020


The FENIX project was created by the Czech peering node NIX.CZ and is primarily a reaction to intense DoS attacks targeting Czech internet services, media, banks and operators in March 2013. The purpose of the project is to ensure the availability of Internet services of the connected entities during a DoS attacks.

A participation in the project is subject to a number of conditions set in the Terms which must be fulfilled by each company wishing to join the project. By joining the FENIX project, the participating organizations have clearly showed their interest in increasing network security and improving their customers’ safety.

The form of the FENIX project in Slovakia will be disclosed after negotiations with Slovak security authorities and the operator community.



Today, NIX.CZ, the Czech neutral peering node, and also one of the largest peering nodes in Europe, celebrates its 25th anniversary. A quarter of a century ago, CESNET, CZECH ON ...

At the June General Meeting of the NIX.CZ Association, Ondřej Filip, Chairman of the Board of Directors, presented a new price list and novelties in terms of ports. “Since the beginning ...

Today, the organizers of the fourth year of the CSNOG 2021 community meeting of administrators of the Czech and Slovak networks announced a Call for Abstracts. Those interested in participating ...

The fourth year of Czech and Slovakian network administrators' community meeting (CSNOG 2021) is going to take place online on October 13 and 14. Purpose of this event which is ...

A short clip on how Internet exchange nodes work

This short video sheds light on the mysteries of how the Internet works and explains the key roles of Internet exchange nodes. Through peering, that is through linking of autonomous systems, the Internet develops. This video was made in a cooperation with EURO-IX and its goal is to present the key role of the Internet exchanges such as NIX.CZ.

Your IP address is:
so you're connected
by the IPv4 protocol.


Topology NIX

Using our extensive experience with the Prague Peering Exchange, we have selected Cisco Nexus 7010 for the launch of the NIX.SK node .With this hardware profile the switches are located in two detached locations and are configured to be fully redundant. The interconnection of the switches is ensured by two independent routes each with double the desired capacity, so that failure of one of the routes does not affect the operation of the connection node.

In mid 2019, NIX.CZ interconnected its nodes in Prague and Bratislava, enabling easy networking between the Czech Republic and Slovakia. This connection is realized by two independent 100GE circuits that are topologically separated.

More about topology.


SITELPOP1, Kopčianska 20, Bratislava
1GE, 10GE, 25GE, 40GE, 100GE

SITELPOP2, Kopčianska 18, Bratislava
1GE, 10GE, 25GE, 40GE, 100GE

DIGITALIS, Trnavská cesta 110/B, Bratislava
Single-Mode optical Fiber (SMF)

Vienna Interxion, Louis-Häfliger-Gasse 10, 1210 Wien, Austria
1GE, 10GE, 25GE, 100GE