AS16246 O2 Czech Republic, a.s. details

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AS16246 – O2 Czech Republic, a.s.

Field	Value
Country	Czechia
Website	o2.cz
Hosted domains	742
Number of IPv4	133,120
Number of IPv6	713,053,462,628,379,038,341,895,553,024
ASN type	ISP
Registry	ripe
Allocated	22 years ago on Oct 21, 2003
Updated	a year ago on Jun 20, 2024

Netblock	Company	Num of IPs
188.175.0.0/16	O2 Czech Republic, a.s.	65,536
94.74.192.0/18	O2 Czech Republic, a.s.	16,384
213.180.32.0/19	O2 Czech Republic, a.s.	8,192
82.150.160.0/19	O2 Czech Republic, a.s.	8,192
86.63.192.0/19	O2 Czech Republic, a.s.	8,192
92.240.160.0/19	O2 Czech Republic, a.s.	8,192
176.98.96.0/20	O2 Czech Republic, a.s.	4,096
178.17.96.0/20	O2 Czech Republic, a.s.	4,096
95.143.128.0/20	O2 Czech Republic, a.s.	4,096
77.87.232.0/21	CATR	2,048
78.108.152.0/21	Assignment for PorubaNET's FO customers	2,048
185.15.252.0/22	O2 Czech Republic, a.s.	1,024
91.197.116.0/22	CATR	1,024

Netblock	Company
2a02:350::/29	O2 Czech Republic, a.s.
2a03:b4c0::/32	O2 Czech Republic, a.s.

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WHOIS Details

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                                                ASHandle:       AS16246
                                                OrgID:          AS16246
                                                ASName:         AS16246
                                                ASNumber:       AS16246
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 742 domain names hosted across 222 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
188.175.126.28	██████████	43
82.150.165.218	██████████	33
188.175.30.5	██████████	32
94.74.229.44	███████	30
94.74.222.181	██████████	30
213.180.34.211	██████████	27
94.74.194.116	██████████	26
82.150.184.15	██████████	23
86.63.219.180	██████████	19
213.180.35.58	██████████	19

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Peers

There are 16 peers for this ASN.

Peers	Name
AS12570	O2 Czech Republic, a.s.
AS197197	Nova Optika s. r. o.
AS202657	Pavel Jochim
AS207015	Position s.r.o.
AS212315	Frantisek Toman
AS29321	O2 Czech Republic, a.s.
AS31246	NETBOX Autonomous system
AS39736	ICT Support, s.r.o.
AS41046	O2 Czech Republic, a.s.
AS42000	Futruy s.r.o.
AS44070	O2 Czech Republic, a.s.
AS47681	O2 Czech Republic, a.s.
AS49767	O2 Czech Republic, a.s.
AS50784	Intraweb servis s.r.o.
AS5610	O2 Czech Republic, a.s.
AS62178	MASTER IT Technologies, a.s.

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Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS5610	O2 Czech Republic, a.s.

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Downstreams

There are 14 downstreams for this ASN.

Downstreams	Name
AS12570	O2 Czech Republic, a.s.
AS197197	Nova Optika s. r. o.
AS202657	Pavel Jochim
AS207015	Position s.r.o.
AS212315	Frantisek Toman
AS29321	O2 Czech Republic, a.s.
AS31246	NETBOX Autonomous system
AS39736	ICT Support, s.r.o.
AS41046	O2 Czech Republic, a.s.
AS44070	O2 Czech Republic, a.s.
AS47681	O2 Czech Republic, a.s.
AS49767	O2 Czech Republic, a.s.
AS50784	Intraweb servis s.r.o.
AS62178	MASTER IT Technologies, a.s.

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Pingable IPs

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

IP Address	ASN	Details
188.175.132.45	AS16246 O2 Czech Republic, a.s.	`4.66ms` from Prague, CZ
188.175.71.18	AS16246 O2 Czech Republic, a.s.	`5.02ms` from Prague, CZ
188.175.144.31	AS16246 O2 Czech Republic, a.s.	`7.50ms` from Prague, CZ
188.175.44.1	AS16246 O2 Czech Republic, a.s.	`7.29ms` from Prague, CZ
92.240.188.143	AS16246 O2 Czech Republic, a.s.	`3.32ms` from Prague, CZ
188.175.35.139	AS16246 O2 Czech Republic, a.s.	`7.39ms` from Prague, CZ
188.175.231.1	AS16246 O2 Czech Republic, a.s.	`0.72ms` from Prague, CZ
188.175.34.190	AS16246 O2 Czech Republic, a.s.	`7.38ms` from Prague, CZ
188.175.183.19	AS16246 O2 Czech Republic, a.s.	`6.34ms` from Prague, CZ
188.175.102.90	AS16246 O2 Czech Republic, a.s.	`3.05ms` from Prague, CZ
82.150.171.1	AS16246 O2 Czech Republic, a.s.	`6.64ms` from Prague, CZ
188.175.112.237	AS16246 O2 Czech Republic, a.s.	`0.86ms` from Prague, CZ
188.175.46.134	AS16246 O2 Czech Republic, a.s.	`7.49ms` from Prague, CZ
188.175.42.232	AS16246 O2 Czech Republic, a.s.	`7.40ms` from Prague, CZ
188.175.195.193	AS16246 O2 Czech Republic, a.s.	`0.70ms` from Prague, CZ
86.63.217.32	AS16246 O2 Czech Republic, a.s.	`1.24ms` from Prague, CZ
188.175.60.1	AS16246 O2 Czech Republic, a.s.	`7.27ms` from Prague, CZ
94.74.230.49	AS16246 O2 Czech Republic, a.s.	`0.73ms` from Prague, CZ
188.175.80.36	AS16246 O2 Czech Republic, a.s.	`5.02ms` from Prague, CZ
188.175.237.39	AS16246 O2 Czech Republic, a.s.	`7.19ms` from Prague, CZ
188.175.142.224	AS16246 O2 Czech Republic, a.s.	`5.03ms` from Prague, CZ
188.175.207.65	AS16246 O2 Czech Republic, a.s.	`3.23ms` from Prague, CZ
94.74.225.72	AS16246 O2 Czech Republic, a.s.	`5.26ms` from Prague, CZ
176.98.99.177	AS16246 O2 Czech Republic, a.s.	`0.92ms` from Prague, CZ
188.175.53.17	AS16246 O2 Czech Republic, a.s.	`7.42ms` from Prague, 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
52.137.49.38	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
20.16.169.86	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
199.160.251.246	AS6079 RCN	`1.54ms` from Ashburn, US
65.191.194.166	AS11426 Charter Communications Inc	`7.01ms` from Charlotte, US
3.249.141.38	AS16509 Amazon.com, Inc.	`0.21ms` from Dublin, IE
61.143.212.150	AS4134 CHINANET-BACKBONE	`4.14ms` from Guangzhou, CN
162.128.33.198	AS21859 Zenlayer Inc	`0.89ms` from Karachi, PK
195.23.202.86	AS1897 NOS COMUNICACOES, S.A.	`15.44ms` from Lisbon, PT
46.26.1.118	AS12430 VODAFONE ESPANA S.A.U.	`12.29ms` from Madrid, ES
103.90.96.182	AS45117 Ishan's Network	`8.99ms` from Mumbai, IN
5.36.159.166	AS28885 OmanTel NAP	`2.80ms` from Muscat, OM
67.2.162.230	AS209 CenturyLink Communications, LLC	`2.28ms` from Salt Lake City, US
4.1.7.54	AS3356 Level 3 Parent, LLC	`0.52ms` from Salt Lake City, US
107.222.176.86	AS7018 AT&T Enterprises, LLC	`5.80ms` from San Antonio, US
185.18.84.134	AS12552 GlobalConnect AB	`3.98ms` from Stockholm, SE
207.112.9.198	AS29988 Rogers Communications Canada Inc.	`0.68ms` from Toronto, CA
107.219.163.22	AS7018 AT&T Enterprises, LLC	`3.56ms` from Chicago, US
3.66.114.38	AS16509 Amazon.com, Inc.	`0.15ms` from Frankfurt am Main, DE
172.213.140.86	AS8075 Microsoft Corporation	`0.72ms` from Milan, IT
103.177.129.102	AS132296 Seven Star Digital Network Private Limited	`2.46ms` from Mumbai, IN
216.150.67.38	AS15149 Core Technology Services, Inc.	`1.12ms` from New York City, US
126.5.75.150	AS17676 SoftBank Corp.	`9.75ms` from Osaka, JP
150.31.164.246	AS2497 Internet Initiative Japan Inc.	`1.78ms` from Osaka, JP
18.229.33.166	AS16509 Amazon.com, Inc.	`0.19ms` from Osasco, BR
27.210.73.166	AS4837 CHINA UNICOM China169 Backbone	`1.13ms` from Qingdao, CN

Traceroute

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

traceroute -a -n -q1 -f7 -m18 188.175.77.82

traceroute to 188.175.77.82 (188.175.77.82): 18 hops max, 52 byte packets

7 [AS6939] 72.52.92.206 228.023 ms

8 *

9 [AS5610] 90.182.199.221 214.823 ms

10 [AS16246] 188.175.255.227 198.446 ms

11 [AS16246] 188.175.255.241 271.789 ms

12 [AS16246] 188.175.255.23 193.142 ms

13 [AS16246] 188.175.255.20 197.385 ms

14 [AS16246] 188.175.255.19 196.001 ms

15 [AS16246] 188.175.255.11 199.747 ms

16 *

17 *

18 *

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On August 17th 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 AS16246 at robtex.

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