Autonomous System details

AS12570

O2 Czech Republic, a.s. · o2.cz

Czechia

BitTorrent

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AS12570 – O2 Czech Republic, a.s.

Field	Value
Country	Czechia
Website	o2.cz
Hosted domains	2,637
IPv4 addresses	53,760
IPv6 addresses	713,053,462,628,379,038,341,895,553,024
ASN type	ISP
Registry	ripe
Allocated	24 years ago on May 27, 2002
Updated	2 years 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 2,637 domain names hosted across 415 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
109.105.61.117	██████████	449
109.105.53.21	██████████	210
212.4.158.38	██████████	104
80.78.150.123	██████████	103
109.105.49.236	██████████	77
212.96.164.158	██████████	70
212.4.158.101	██████████	50
212.4.158.48	█████████	42
80.78.147.22	█████████	42
212.4.153.212	██████████	30

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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.
AS205947	NDC ICT Solutions 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

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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS16246	O2 Czech Republic, a.s.

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Downstreams

There are 12 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

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
2001:4ba8:801::9	AS12570 O2 Czech Republic, a.s.	`1.80ms` from Brno, CZ
89.190.44.1	AS12570 O2 Czech Republic, a.s.	`0.86ms` from Brno, CZ
88.83.231.150	AS12570 O2 Czech Republic, a.s.	`3.68ms` from Brno, CZ
80.78.150.122	AS12570 O2 Czech Republic, a.s.	`2.83ms` from Brno, CZ
213.211.58.103	AS12570 O2 Czech Republic, a.s.	`6.89ms` from Brno, CZ
213.211.56.1	AS12570 O2 Czech Republic, a.s.	`0.87ms` from Brno, CZ
213.211.53.193	AS12570 O2 Czech Republic, a.s.	`2.99ms` from Brno, CZ
212.96.164.205	AS12570 O2 Czech Republic, a.s.	`0.78ms` from Brno, CZ
212.96.180.76	AS12570 O2 Czech Republic, a.s.	`0.75ms` from Brno, CZ
213.211.54.1	AS12570 O2 Czech Republic, a.s.	`0.84ms` from Brno, CZ
213.211.32.1	AS12570 O2 Czech Republic, a.s.	`1.42ms` from Brno, CZ
89.190.56.49	AS12570 O2 Czech Republic, a.s.	`2.92ms` from Brno, CZ
212.96.183.225	AS12570 O2 Czech Republic, a.s.	`1.06ms` from Brno, CZ
109.105.56.2	AS12570 O2 Czech Republic, a.s.	`0.86ms` from Brno, CZ
2a0b:bb41:1093::1	AS12570 O2 Czech Republic, a.s.	`3.71ms` from Brno, CZ
213.211.35.69	AS12570 O2 Czech Republic, a.s.	`3.10ms` from Brno, CZ
212.4.136.102	AS12570 O2 Czech Republic, a.s.	`0.93ms` from Brno, CZ
212.4.130.1	AS12570 O2 Czech Republic, a.s.	`1.44ms` from Brno, CZ
2a0b:bb41:110a::1	AS12570 O2 Czech Republic, a.s.	`8.10ms` from Prague, CZ
2a0b:bb41:9016::1	AS12570 O2 Czech Republic, a.s.	`10.81ms` from Prague, CZ
212.4.154.1	AS12570 O2 Czech Republic, a.s.	`2.08ms` from Brno, CZ
212.4.133.1	AS12570 O2 Czech Republic, a.s.	`3.01ms` from Brno, CZ
213.211.60.1	AS12570 O2 Czech Republic, a.s.	`2.10ms` from Brno, CZ
2001:4ba8:500:1::	AS12570 O2 Czech Republic, a.s.	`1.11ms` from Brno, CZ
212.4.153.1	AS12570 O2 Czech Republic, a.s.	`0.79ms` 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
79.221.113.122	AS3320 Deutsche Telekom AG	`2.32ms` from Berlin, DE
54.195.208.138	AS16509 Amazon.com, Inc.	`0.11ms` from Dublin, IE
90.186.52.122	AS3209 Vodafone GmbH	`4.74ms` from Hamburg, DE
147.81.91.106	AS36149 Hawaiian Telcom Services Company, Inc.	`9.20ms` from Honolulu, US
118.220.168.154	AS9318 SK Broadband Co Ltd	`1.70ms` from Incheon, KR
90.199.201.10	AS5607 Sky UK Limited	`6.47ms` from London, GB
95.240.32.218	AS3269 Telecom Italia S.p.A.	`3.20ms` from Milan, IT
178.68.123.186	AS12389 PJSC Rostelecom	`17.84ms` from Saint Petersburg, RU
159.226.55.10	AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	`5.29ms` from Tianjin, CN
207.61.238.234	AS577 Bell Canada	`1.18ms` from Toronto, CA
61.134.41.74	AS4134 CHINANET-BACKBONE	`3.19ms` from Xi'an, CN
77.163.56.234	AS1136 KPN B.V.	`1.65ms` from Amsterdam, NL
31.207.11.106	AS39686 Eurofiber Nederland BV	`0.46ms` from Amsterdam, NL
107.13.228.122	AS11426 Charter Communications Inc	`10.04ms` from Ashburn, US
24.126.85.90	AS7922 Comcast Cable Communications, LLC	`6.32ms` from Ashburn, US
71.72.84.138	AS10796 Charter Communications Inc	`8.24ms` from Columbus, US
192.88.195.10	AS600 OARnet	`0.96ms` from Columbus, US
35.225.212.138	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
14.112.5.234	AS4134 CHINANET-BACKBONE	`3.76ms` from Guangzhou, CN
79.225.105.26	AS3320 Deutsche Telekom AG	`3.84ms` from Hamburg, DE
49.84.171.186	AS140292 CHINATELECOM Jiangsu province Suzhou 5G network	`6.35ms` from Huai'an, CN
112.163.125.10	AS4766 Korea Telecom	`7.23ms` from Incheon, KR
118.220.207.170	AS9318 SK Broadband Co Ltd	`6.36ms` from Incheon, KR
62.150.253.10	AS9155 Quality Net General Trading & Contracting Company	`0.69ms` from Kuwait City, KW
46.65.120.74	AS5607 Sky UK Limited	`11.27ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -m11 80.78.148.15

traceroute to 80.78.148.15 (80.78.148.15): 11 hops max, 52 byte packets

1 [AS15169] 74.125.252.113 18.548 ms

2 [AS15169] 192.178.252.182 18.673 ms

3 *

4 [AS5610] 90.182.199.93 19.163 ms

5 [AS16246] 188.175.254.251 22.654 ms

6 [AS16246] 94.74.231.250 22.549 ms

7 [AS12570] 212.96.160.120 24.153 ms

8 [AS12570] 212.96.178.7 24.725 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Berlin, DE

On January 18th 2026

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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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