O2 Czech Republic, a.s. operates AS5610: 47 IPv4 prefixes covering 1,540,608 addresses, most of them in 
Czechia.
By IPv4 addresses the network ranks #250 worldwide and #1 of 562 networks in Czechia. That is 18% of the country’s IPv4 space.
The network spreads across 5 countries: Czechia 99%, Slovakia 0.98%, Germany 0.02%.
The largest block is 90.176.32.0 to 90.183.255.255 with 516,096 addresses, geolocated to Dolní Chabry.
- IPv4 addresses
- 1,540,608
- IPv4 prefixes
- 47
- World rank
- #250
- Country share
- 18%
- IPv6 ranges
- 4
Addresses by country
- Czechia 99%
Slovakia 0.98%
Germany 0.02%
United Kingdom 0.02%
Luxembourg 0.02%
Largest blocks
- 90.176.32.0 Dolní Chabry516,096
- 88.100.0.0 Prague (Praha 4)262,144
- 109.80.0.0 Chomutice131,072
- 85.160.0.0 Vilémov131,072
- 85.70.0.0 Prague (Praha 4)131,072
- 160.218.0.0 Prague (Praha 4)65,536
- 83.208.0.0 Prague (Praha 4)65,536
- 80.188.0.0 Prague (Praha 4)65,536
Networks of similar size
1,564,160
1,562,880
1,556,736
1,554,176
1,521,408
1,514,240
1,513,472
1,512,692IPv4 prefixes
- 5.23.39.0/24
- 37.188.128.0/17
- 80.188.0.0/16
- 81.90.160.0/20
- 83.69.32.0/19
- 83.208.0.0/16
- 85.70.0.0/15
- 85.160.0.0/15
- 85.193.0.0/18
- 88.83.160.0/19
- 88.100.0.0/14
- 90.176.32.0/19
- 90.176.64.0/18
- 90.176.128.0/17
- 90.177.0.0/16
- 90.178.0.0/15
- 90.180.0.0/14
- 91.191.64.0/22
- 91.191.68.0/24
- 91.191.70.0/23
- 91.191.72.0/21
- 91.191.84.0/22
- 91.191.88.0/21
- 91.191.96.0/19
- 91.193.132.0/22
- 91.213.10.0/24
- 91.232.82.0/24
- 92.243.192.0/19
- 109.80.0.0/15
- 160.218.0.0/16
- 161.195.144.0/24
- 185.61.228.0/22
- 185.143.112.0/22
- 193.17.13.0/24
- 193.84.12.0/22
- 194.50.248.0/23
- 194.165.47.0/24
- 194.228.0.0/17
- 194.228.128.0/20
- 194.228.144.0/21
- 194.228.152.0/22
- 194.228.158.0/23
- 194.228.160.0/19
- 194.228.192.0/18
- 195.5.186.0/24
- 217.117.208.0/20
- 217.194.160.0/20
Questions and answers
Who owns AS5610?
Autonomous system AS5610 is operated by O2 Czech Republic, a.s..
How many IP addresses does AS5610 have?
The network holds 1,540,608 IPv4 addresses in 47 prefixes, plus 4 IPv6 ranges.
Which country is AS5610 in?
The main country is Czechia, with addresses in 4 more countries.
How big is AS5610?
By IPv4 addresses it ranks #250 worldwide.
What is the largest address block of AS5610?
90.176.32.0 to 90.183.255.255, 516,096 addresses.