AS5610

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Summary

IP address summary information
Name	O2 Czech Republic, a.s.
Country	Czechia
Website	host.io/o2.cz·o2.cz
Hosted domains	7,035
IPv4 addresses	1,542,400
IPv6 addresses	9.51 × 10²⁹
ASN type	ISP
Registry	RIPE
Allocated	24 years ago on Jul 22, 2002
Updated	2 years ago on Jun 12, 2024

Ranking

#438

Overall rank

among 75,094 networks

Traffic

#424

Infrastructure

#427

#1inCzechia

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

Czechia
100%

Held location over 90 days: 85%
Held location over 1 year: 87%
Median days between moves: 83 days
Geolocation scope: National

How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.

Activity

A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.

Mon

IP Ranges

Netblock	Company	Num of IPs
88.100.0.0/14	O2 Czech Republic, a.s.	262,144
90.180.0.0/14	O2 Czech Republic, a.s.	262,144
85.70.0.0/15	O2 Czech Republic, a.s.	131,072
85.160.0.0/15	O2 Czech Republic, a.s.	131,072
88.100.0.0/15	O2 Czech Republic, a.s.	131,072
90.178.0.0/15	O2 Czech Republic, a.s.	131,072
109.80.0.0/15	O2 Czech Republic, a.s.	131,072
80.188.0.0/16	O2 Czech Republic, a.s.	65,536
83.208.0.0/16	O2 Czech Republic, a.s.	65,536
85.70.0.0/16	O2 Czech Republic, a.s.	65,536

IP Ranges

WHOIS


  ASHandle:       █████
  OrgID:          █████
  ASName:         ██████
  ASNumber:       AS█████
  RegDate:        ████-██-██
  Updated:        ████-██-██
  TechHandle:     ████-████
  Source:         ████

Hosted Domains

There are 7,035 domain names hosted across 1,987 IP addresses on this ASN.

IP Address	Domain	Count
90.183.125.35		232
90.182.39.34		177
194.228.93.211		163
160.218.161.165		145
160.218.161.162		140

Places

IPs in this network linked to physical places, based on their Wi-Fi networks.

Places IPs5,476
Hotel1,119
Restaurant1,016
Bar454

Category	In AS5610	Example IP

Places

Peers

There are 50 peers for this ASN.

ASN	Name	Rank

Upstreams

There are 4 upstreams for this ASN.

ASN	Name	Rank
AS174	Cogent Communications, LLC
AS1299	Arelion Sweden AB
AS6461	Zayo Bandwidth
AS6939	Hurricane Electric LLC

Downstreams

There are 43 downstreams for this ASN.

ASN	Name	Rank

Pingable IPs

3,103 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more

IP Address	ASN	Details
80.188.4.129 Ping	AS5610O2 Czech Republic, a.s.	0.57ms from Prague, CZ
90.176.90.25 Ping	AS5610O2 Czech Republic, a.s.	5.73ms from Prague, CZ
83.208.116.203 Ping	AS5610O2 Czech Republic, a.s.	8.53ms from Prague, CZ
88.103.95.204 Ping	AS5610O2 Czech Republic, a.s.	8.46ms from Prague, CZ
109.80.116.80 Ping	AS5610O2 Czech Republic, a.s.	4.75ms from Prague, CZ
90.182.123.125 Ping	AS5610O2 Czech Republic, a.s.	1.01ms from Prague, CZ
2a00:1028:d000:369::1 Ping	AS5610O2 Czech Republic, a.s.	3.75ms from Prague, CZ
2a00:1028:800:a002::1 Ping	AS5610O2 Czech Republic, a.s.	0.55ms from Prague, CZ
88.101.122.254 Ping	AS5610O2 Czech Republic, a.s.	1.27ms from Prague, CZ
80.188.78.98 Ping	AS5610O2 Czech Republic, a.s.	0.96ms from Prague, CZ

Other Pingable IPs

IP Address	ASN	Details

Pingable IPs

Important routers in AS5610


194.228.21.249	Prague, Czechia
194.228.21.251	Prague, Czechia
80.188.33.25	Prague, Czechia
194.228.77.51	Prague, Czechia
80.188.228.3	Prague, Czechia
80.188.228.7	Prague, Czechia
194.228.77.55	Prague, Czechia
90.182.199.92	Prague, Czechia
83.208.221.1	Prague, Czechia
90.181.223.142	Prague, Czechia

Important routers in AS5610

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.Traceroute →

$ traceroute -a -n -q1 90.179.225.253

traceroute to 90.179.225.253 (90.179.225.253): 64 hops max, 52 byte packets

1 [AS63023] 66.163.127.1 0.518 ms

2 *

3 [AS174] 154.54.56.153 1.447 ms

4 [AS174] 154.54.38.206 9.062 ms

5 [AS174] 154.54.77.130 17.901 ms

6 [AS174] 154.54.78.66 19.901 ms

7 [AS174] 149.11.118.5 18.246 ms

8 [AS5610] 194.228.21.200 18.255 ms

9 [AS5610] 194.228.115.75 18.073 ms

10 [AS5610] 90.183.197.127 18.253 ms

11 *

12 [AS5610] 90.179.225.253 36.166 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On October 30, 2026

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS5610 at robtex.

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AS5610

Summary

Ranking

Geolocation

Countries by IPv4 share

Activity

IP Ranges

IP Ranges

WHOIS

Hosted Domains

Places

Places

Peers

Upstreams

Downstreams

Pingable IPs

Other Pingable IPs

Pingable IPs

Important routers in AS5610

Important routers in AS5610

Traceroute

Related Networks

AS198031

AS206438

AS207575

AS28851

AS30738

What is an ASN?

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Traceroute

Ranking

Important routers in AS5610

Geolocation

Countries by IPv4 share

Pingable IPs

Other Pingable IPs

Activity

IP Ranges

Places

AS198031

AS206438

AS207575

AS28851

AS30738

AS41509