AS12570 O2 Czech Republic, a.s. details

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AS12570 – O2 Czech Republic, a.s.

Field	Value
Country	Czechia
Website	o2.cz
Hosted domains	2,985
Number of IPv4	53,760
Number of IPv6	713,053,462,628,379,038,341,895,553,024
ASN type	ISP
Registry	ripe
Allocated	23 years ago on May 27, 2002
Updated	a year ago on Jun 20, 2024

Netblock	Company	Num of IPs
88.83.224.0/19	O2 Czech Republic, a.s.	8,192
109.105.32.0/19	O2 Czech Republic, a.s.	8,192
212.4.128.0/19	O2 Czech Republic, a.s.	8,192
212.96.160.0/19	O2 Czech Republic, a.s.	8,192
213.211.32.0/19	O2 Czech Republic, a.s.	8,192
80.78.144.0/20	O2 Czech Republic, a.s.	4,096
89.190.48.0/20	O2 Czech Republic, a.s.	4,096
89.190.40.0/21	VELBNET, s.r.o.	2,048
185.8.188.0/22	O2 Czech Republic, a.s.	1,024
193.17.248.0/22	ZEAL s.r.o.	1,024
195.78.122.0/23	ZEAL s.r.o.	512

Netblock	Company
2001:4ba8::/29	O2 Czech Republic, a.s.
2a0b:bb41::/32	Netstone s.r.o.

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WHOIS Details

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                                                ASHandle:       AS12570
                                                OrgID:          AS12570
                                                ASName:         AS12570
                                                ASNumber:       AS12570
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 2,985 domain names hosted across 422 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
109.105.61.117	██████████	432
109.105.53.21	██████████	249
212.4.158.38	██████████	105
80.78.150.123	██████████	102
109.105.61.93	██████████	77
109.105.49.236	██████████	77
212.96.164.158	██████████	71
212.4.153.241	██████████	59
109.105.53.8	██████████	52
212.4.158.101	██████████	46

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Peers

There are 15 peers for this ASN.

Peers	Name
AS16246	O2 Czech Republic, a.s.
AS196815	LAN servis s.r.o.
AS197798	Net-Connect s.r.o.
AS198346	NETFORMS s.r.o.
AS198620	Bralu Jurjanu biedriba
AS202979	NGA Services, spol. s r.o.
AS204886	Metropolitni sit Humpolec spol. s r.o.
AS211334	MASTER IT Technologies, a.s.
AS213354	INTERNATIONAL HOSTING SOLUTIONS LLP
AS25192	CZ.NIC, z.s.p.o.
AS47232	ISP Alliance a.s.
AS47941	Red Hat Ltd
AS48091	Kraj Vysocina
AS51424	Jiri Sperl
AS51968	NEOS v.o.s.

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Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS16246	O2 Czech Republic, a.s.

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Downstreams

There are 13 downstreams for this ASN.

Downstreams	Name
AS196815	LAN servis s.r.o.
AS197798	Net-Connect s.r.o.
AS198346	NETFORMS s.r.o.
AS198620	Bralu Jurjanu biedriba
AS202979	NGA Services, spol. s r.o.
AS204886	Metropolitni sit Humpolec spol. s r.o.
AS211334	MASTER IT Technologies, a.s.
AS213354	INTERNATIONAL HOSTING SOLUTIONS LLP
AS25192	CZ.NIC, z.s.p.o.
AS47941	Red Hat Ltd
AS48091	Kraj Vysocina
AS51424	Jiri Sperl
AS51968	NEOS v.o.s.

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Pingable IPs

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

IP Address	ASN	Details
89.190.45.162	AS12570 O2 Czech Republic, a.s.	`7.17ms` from Brno, CZ
89.190.46.1	AS12570 O2 Czech Republic, a.s.	`2.17ms` from Brno, CZ
212.96.173.2	AS12570 O2 Czech Republic, a.s.	`1.01ms` from Brno, CZ
193.17.251.190	AS12570 O2 Czech Republic, a.s.	`3.59ms` from Brno, CZ
213.211.35.117	AS12570 O2 Czech Republic, a.s.	`1.65ms` from Brno, CZ
109.105.42.2	AS12570 O2 Czech Republic, a.s.	`2.09ms` from Brno, CZ
2a0b:bb41:10b9::1	AS12570 O2 Czech Republic, a.s.	`5.63ms` from Brno, CZ
213.211.42.1	AS12570 O2 Czech Republic, a.s.	`2.99ms` from Brno, CZ
2a0b:bb41:110c::1	AS12570 O2 Czech Republic, a.s.	`7.27ms` from Prague, CZ
185.8.189.254	AS12570 O2 Czech Republic, a.s.	`0.96ms` from Brno, CZ
2a0b:bb41:10cc::1	AS12570 O2 Czech Republic, a.s.	`8.56ms` from Brno, CZ
212.96.175.95	AS12570 O2 Czech Republic, a.s.	`8.23ms` from Brno, CZ
89.190.48.1	AS12570 O2 Czech Republic, a.s.	`1.62ms` from Brno, CZ
213.211.51.1	AS12570 O2 Czech Republic, a.s.	`2.88ms` from Brno, CZ
109.105.54.137	AS12570 O2 Czech Republic, a.s.	`1.90ms` from Brno, CZ
89.190.59.45	AS12570 O2 Czech Republic, a.s.	`7.41ms` from Brno, CZ
212.4.144.40	AS12570 O2 Czech Republic, a.s.	`3.27ms` from Brno, CZ
213.211.57.155	AS12570 O2 Czech Republic, a.s.	`7.37ms` from Brno, CZ
213.211.39.151	AS12570 O2 Czech Republic, a.s.	`7.87ms` from Brno, CZ
213.211.54.1	AS12570 O2 Czech Republic, a.s.	`0.89ms` from Brno, CZ
2001:4ba8:203::	AS12570 O2 Czech Republic, a.s.	`1.62ms` from Brno, CZ
109.105.58.14	AS12570 O2 Czech Republic, a.s.	`0.80ms` from Brno, CZ
2001:4ba8:101:1::a	AS12570 O2 Czech Republic, a.s.	`1.21ms` from Brno, CZ
2001:4ba8:103:4::2	AS12570 O2 Czech Republic, a.s.	`0.10ms` from Brno, CZ
2001:4ba8:202:2::6	AS12570 O2 Czech Republic, a.s.	`0.91ms` from Brno, CZ

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
188.226.253.58	AS14061 DigitalOcean, LLC	`0.24ms` from Amsterdam, NL
123.166.62.154	AS4134 CHINANET-BACKBONE	`13.08ms` from Dalian, CN
157.200.243.250	AS16086 DNA Oyj	`1.17ms` from Helsinki, FI
137.66.33.154	AS40509 Fly.io, Inc.	`0.09ms` from Johannesburg, ZA
24.180.50.106	AS20115 Charter Communications LLC	`6.60ms` from Los Angeles, US
35.227.52.26	AS396982 Google LLC	`0.15ms` from Moncks Corner, US
13.200.240.122	AS16509 Amazon.com, Inc.	`0.14ms` from Mumbai, IN
32.43.131.74	AS7018 AT&T Enterprises, LLC	`5.72ms` from Redding, US
121.227.88.234	AS140292 CHINATELECOM Jiangsu province Suzhou 5G network	`6.63ms` from Shanghai, CN
34.151.83.42	AS396982 Google LLC	`0.11ms` from Sydney, AU
173.170.207.90	AS33363 Charter Communications, Inc	`11.53ms` from Boca Raton, US
197.133.213.202	AS24835 Vodafone Data	`8.60ms` from Cairo, EG
90.236.221.58	AS3301 Telia Company AB	`11.13ms` from Copenhagen, DK
41.82.206.26	AS8346 SONATEL-AS Autonomous System	`0.10ms` from Dakar, SN
20.168.188.74	AS8075 Microsoft Corporation	`3.22ms` from Denver, US
84.151.119.26	AS3320 Deutsche Telekom AG	`7.39ms` from Frankfurt am Main, DE
14.227.253.106	AS45899 VNPT Corp	`3.40ms` from Ho Chi Minh City, VN
58.65.172.170	AS23674 Nayatel (Pvt) Ltd	`1.14ms` from Islamabad, PK
188.43.30.234	AS20485 Joint Stock Company TransTeleCom	`0.29ms` from Khabarovsk, RU
211.25.240.154	AS9930 TTNET-MY	`1.32ms` from Kuala Lumpur, MY
122.143.80.90	AS4837 CHINA UNICOM China169 Backbone	`11.99ms` from Liaoyang, CN
45.76.66.218	AS20473 The Constant Company, LLC	`0.14ms` from Los Angeles, US
2.40.182.106	AS30722 Vodafone Italia S.p.A.	`1.40ms` from Milan, IT
61.89.115.250	AS18081 Kintetsu Cable Network Co., Ltd.	`1.40ms` from Osaka, JP
109.220.226.250	AS3215 Orange S.A.	`14.59ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -f4 -m10 212.4.146.146

traceroute to 212.4.146.146 (212.4.146.146): 10 hops max, 52 byte packets

4 [AS6939] 184.104.194.5 21.462 ms

5 *

6 *

7 [AS5610] 90.182.199.93 22.455 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Vilnius, LT

On October 25th 2025

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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 AS12570 at robtex.

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