O2 Czech Republic a.s.

O2 Czech Republic, a.s.
Data as of 2026-09-05
GLEIF verified
Complete entity footprint
6 linked clusters · 3,499 netblocks · 2,202,503 IPv4 addresses · 54 IPv6 prefixes
This organisation's clusters combined by evidence — shared GLEIF corporate family and shared operating domain o2.cz — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
3157004ICDH3MRKW7534
Registered name
O2 Czech Republic a.s.
Jurisdiction
CZ
Ultimate parent
AMALAR HOLDING s.r.o.
984500CE58365CB10V25
This organisation
Netblocks184 · 2,042,626 IPv4 addresses
IPv6 27 prefixes (largest 2001:4ba8::/29)
Registered in Czechia (241) · France (1) · Italy (1) · Slovakia (1) · United States (1)
Record ID231606016
RegistryBGP
Owner jurisdictionCZ
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 3157004ICDH3MRKW7534
Shared handles clustered on 35 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (184)

⬇ export CSV
CIDR Org name Registry Status Confidence
5.23.39.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
5.102.48.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
31.10.56.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
37.188.128.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
45.159.116.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
46.39.160.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
46.183.56.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
46.231.72.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
77.87.232.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
77.95.192.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
77.242.80.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
78.41.8.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
78.108.152.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
78.136.128.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.78.136.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.78.144.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.79.0.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.87.176.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.90.128.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.188.0.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.188.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.188.40.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.188.128.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.188.222.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.243.96.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.243.236.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
80.251.240.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
81.90.160.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
81.90.168.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
81.90.168.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
81.90.170.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
81.90.173.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
81.200.48.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
81.200.48.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
81.200.56.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
82.114.192.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
82.150.160.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
83.69.32.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
83.208.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
83.208.0.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
83.208.64.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
83.208.128.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
83.208.220.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
83.240.0.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
85.70.0.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
85.70.0.0/15 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
85.70.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
85.70.128.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
85.71.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
85.71.224.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
85.160.0.0/15 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
85.193.0.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
86.63.192.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
88.81.64.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
88.83.160.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
88.83.175.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
88.83.224.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
88.100.0.0/15 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
88.100.0.0/14 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
88.102.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
89.31.8.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
89.190.40.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
89.190.48.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.176.32.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.176.64.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.176.128.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.176.170.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.177.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.178.0.0/15 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.180.0.0/14 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.181.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.182.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.182.108.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
90.183.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
91.187.32.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
91.191.64.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
91.193.132.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
91.197.116.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
91.210.16.160/32 O2 Czech Republic PEERINGDB ASSIGNED ● high
91.210.16.161/32 O2 Czech Republic PEERINGDB ASSIGNED ● high
91.213.10.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
91.232.82.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
92.61.80.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
92.240.160.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
92.243.192.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
93.92.48.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
93.93.32.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
94.74.192.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
94.143.168.0/21 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
94.241.64.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
95.82.128.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
95.143.128.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
109.72.0.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
109.80.0.0/15 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
109.81.112.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
109.81.160.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
109.105.32.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
109.108.96.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
109.239.64.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
160.218.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
161.195.144.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
176.98.96.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
176.102.128.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
178.17.80.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
178.17.96.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
178.72.192.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
178.72.192.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
178.72.224.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.8.188.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.15.252.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.51.240.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.61.228.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.78.12.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.82.236.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.108.60.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.143.112.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.157.240.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
185.191.184.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
188.119.96.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
188.175.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
193.17.13.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
193.17.248.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
193.42.128.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
193.84.12.0/23 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
193.84.12.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
193.84.14.0/23 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
193.107.252.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
194.31.216.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
194.50.248.0/23 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
194.59.240.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
194.165.47.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
194.228.0.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
194.228.0.0/16 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
194.228.72.0/22 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
194.228.128.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
195.5.186.0/24 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
195.78.122.0/23 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
212.4.128.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
212.96.160.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
213.19.0.0/17 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
213.155.32.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
213.155.224.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
213.180.32.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
213.211.32.0/19 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
213.250.192.0/18 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
217.117.208.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
217.170.96.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
217.194.160.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
217.195.160.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
217.196.112.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
217.197.144.0/20 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2001:67c:dd4::/48 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2001:67c:2d90::/48 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2001:7f8:14::29:1/128 O2 Czech Republic PEERINGDB ASSIGNED ● high
2001:7f8:14::29:2/128 O2 Czech Republic PEERINGDB ASSIGNED ● high
2001:41d8::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2001:4ba8::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2001:4cc8::/31 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a00:1028::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a00:1028::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a00:e4c0::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a01:9f40::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a02:350::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a02:9b8::/31 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a02:b20::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a02:2428::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a02:2588::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a02:2930::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a03:1600::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a03:7a00::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a03:a820::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a03:b4c0::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a07:b5c0::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a07:cc80::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a0a:cac0::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a0b:bb41::/32 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a0c:8b40::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
2a10:c540::/29 O2 Czech Republic, a.s. BGP ANNOUNCED ● high
78.108.144.0/20 O2 Czech Republic, a.s. RIPE ALLOCATED PA ● low
89.190.40.0 – 89.190.63.255 O2 Czech Republic, a.s. RIPE ALLOCATED PA ● low
90.176.32.0 – 90.183.255.255 O2 Czech Republic, a.s. RIPE ALLOCATED PA ● low
176.222.224.0/21 O2 Czech Republic, a.s. RIPE ALLOCATED PA ● low
178.17.80.0 – 178.17.111.255 O2 Czech Republic, a.s. RIPE ALLOCATED PA ● low
185.152.152.0/22 O2 Czech Republic, a.s. RIPE ALLOCATED PA ● low

IPv6 ranges (27)

showing the 15 largest allocations
CIDR
2001:4ba8::/29
2a00:1028::/29
2a01:9f40::/29
2a02:2588::/29
2a02:350::/29
2a07:b5c0::/29
2a07:cc80::/29
2a0a:cac0::/29
2a0c:8b40::/29
2a10:c540::/29
2001:4cc8::/31
2a02:9b8::/31
2001:41d8::/32
2a00:1028::/32
2a00:e4c0::/32

Footprint over time

10 weekly snapshots · JSON
293 0 netblocks since 2026-07-05
2026-07-05 peak 293 2026-08-30

Domains hosted in this network

what's this?
o2.cz freebone.cz 2n.cz gpe.cz acer-online.cz comtelnet.cz nej.cz fbcdn.net

Customer-delegated space

how is this classified?
Unclassified 231 (125.5%)
Customer access pools 58 (31.5%)
Operator infrastructure (named) 4 (2.2%)

Corporate group (5 confirmed entities)

+2,666 additional unconfirmed candidates not shown — full list (JSON)

Network trust

what's this?
RPKI hygiene: A how networks compare →
95.2% of checked blocks have valid RPKI ROA coverage (279 of 293)
No discrepancies found among checked blocks.

NIC Handles

AS12570 AS12767-MNT AS16246 AS29321 AS31246 AS41046 AS42908 AS44070 AS47681 AS49767 AS5610 AS5610 +23 more