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	749
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 749 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	██████████	34
188.175.30.5	██████████	32
94.74.222.181	█████████	30
94.74.229.44	██████████	30
213.180.34.211	██████████	27
94.74.194.116	██████████	26
82.150.184.15	██████████	23
213.180.35.58	██████████	20
86.63.219.180	██████████	19

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Peers

There are 15 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.
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

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

IP Address	ASN	Details
188.175.34.190	AS16246 O2 Czech Republic, a.s.	`7.41ms` from Prague, CZ
95.143.132.57	AS16246 O2 Czech Republic, a.s.	`5.09ms` from Prague, CZ
94.74.240.152	AS16246 O2 Czech Republic, a.s.	`4.63ms` from Prague, CZ
2a03:b4c0:2::1	AS16246 O2 Czech Republic, a.s.	`5.33ms` from Prague, CZ
188.175.204.1	AS16246 O2 Czech Republic, a.s.	`3.19ms` from Prague, CZ
188.175.43.211	AS16246 O2 Czech Republic, a.s.	`7.41ms` from Prague, CZ
94.74.204.1	AS16246 O2 Czech Republic, a.s.	`1.67ms` from Prague, CZ
86.63.205.141	AS16246 O2 Czech Republic, a.s.	`5.02ms` from Prague, CZ
94.74.230.49	AS16246 O2 Czech Republic, a.s.	`0.74ms` from Prague, CZ
188.175.102.121	AS16246 O2 Czech Republic, a.s.	`3.05ms` from Prague, CZ
188.175.237.39	AS16246 O2 Czech Republic, a.s.	`7.18ms` from Prague, CZ
188.175.232.1	AS16246 O2 Czech Republic, a.s.	`4.89ms` from Prague, CZ
188.175.171.18	AS16246 O2 Czech Republic, a.s.	`7.42ms` from Prague, CZ
188.175.127.1	AS16246 O2 Czech Republic, a.s.	`2.40ms` from Prague, CZ
92.240.180.173	AS16246 O2 Czech Republic, a.s.	`3.37ms` from Prague, CZ
94.74.207.181	AS16246 O2 Czech Republic, a.s.	`5.00ms` from Prague, CZ
188.175.172.225	AS16246 O2 Czech Republic, a.s.	`4.84ms` from Prague, CZ
188.175.49.5	AS16246 O2 Czech Republic, a.s.	`7.40ms` from Prague, CZ
188.175.44.1	AS16246 O2 Czech Republic, a.s.	`7.29ms` from Prague, CZ
213.180.60.78	AS16246 O2 Czech Republic, a.s.	`3.46ms` from Prague, CZ
188.175.221.1	AS16246 O2 Czech Republic, a.s.	`3.23ms` from Prague, CZ
213.180.45.29	AS16246 O2 Czech Republic, a.s.	`4.04ms` from Prague, CZ
188.175.186.129	AS16246 O2 Czech Republic, a.s.	`7.31ms` from Prague, CZ
188.175.242.1	AS16246 O2 Czech Republic, a.s.	`4.90ms` from Prague, CZ
92.240.181.23	AS16246 O2 Czech Republic, a.s.	`3.35ms` 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
175.35.76.230	AS4804 Microplex PTY LTD	`6.11ms` from Adelaide, AU
118.185.41.102	AS55410 Vodafone Idea Ltd	`1.24ms` from Ahmedabad, IN
103.153.140.150	AS133284 Airprime Internet Services Private Limited	`9.45ms` from Chennai, IN
217.91.64.214	AS3320 Deutsche Telekom AG	`7.68ms` from Frankfurt am Main, DE
128.107.79.22	AS109 CISCO SYSTEMS, INC.	`1.54ms` from Fremont, US
58.3.82.118	AS7679 QTnet,Inc.	`12.23ms` from Osaka, JP
80.119.235.22	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`10.40ms` from Paris, FR
86.202.67.246	AS3215 Orange S.A.	`7.72ms` from Paris, FR
44.231.155.246	AS16509 Amazon.com, Inc.	`4.53ms` from Portland, US
185.176.222.118	AS39845 2 Cloud Ltd.	`0.60ms` from Riga, LV
112.163.178.118	AS4766 Korea Telecom	`8.60ms` from Seoul, KR
153.204.128.86	AS4713 NTT Communications Corporation	`3.27ms` from Tokyo, JP
220.249.1.6	AS4808 China Unicom Beijing Province Network	`4.64ms` from Beijing, CN
41.35.221.54	AS8452 TE-AS	`3.69ms` from Cairo, EG
173.161.64.198	AS7922 Comcast Cable Communications, LLC	`4.16ms` from Chicago, US
94.145.20.102	AS9158 Telenor A/S	`1.97ms` from Copenhagen, DK
121.8.190.182	AS4134 CHINANET-BACKBONE	`2.34ms` from Guangzhou, CN
82.181.244.54	AS16086 DNA Oyj	`8.50ms` from Helsinki, FI
96.70.140.150	AS7922 Comcast Cable Communications, LLC	`6.71ms` from Herndon, US
156.250.181.214	AS132839 POWER LINE DATACENTER	`1.02ms` from Hong Kong, HK
18.167.124.102	AS16509 Amazon.com, Inc.	`0.10ms` from Hong Kong, HK
213.108.44.86	AS48094 PBF "Electra"	`2.82ms` from Kyiv, UA
113.228.72.198	AS4837 CHINA UNICOM China169 Backbone	`9.02ms` from Liaoyang, CN
95.94.118.134	AS2860 NOS COMUNICACOES, S.A.	`8.69ms` from Lisbon, PT
74.87.158.182	AS20001 Charter Communications Inc	`2.09ms` from Los Angeles, US

Traceroute

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

traceroute -a -n -q1 -m9 95.143.136.33

traceroute to 95.143.136.33 (95.143.136.33): 9 hops max, 52 byte packets

1 [AS39798] 5.252.178.1 6.077 ms

2 *

3 *

4 *

5 [] 194.30.187.161 28.232 ms

6 [AS5610] 90.182.199.221 28.702 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Iasi, RO

On September 11th 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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