Autonomous System details

AS203208

Czech Telecommunication Office  ·  ctu.cz

Czechia
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AS203208 – Czech Telecommunication Office

Field Value
Country Czechia
Website ctu.cz
Hosted domains 0
IPv4 addresses 768
IPv6 addresses 554,597,137,599,850,363,154,807,652,352
ASN type Business
Registry ripe
Allocated 10 years ago on Mar 08, 2016
Updated 9 months ago on Jul 04, 2025
Netblock Company Num of IPs
185.68.212.0/23 CTU SOKOLOVSKA 512
185.68.214.0/24 CTU SOKOLOVSKA 256
Netblock Company
2a05:1c40::/30 CTU SOKOLOVSKA
2a05:1c44::/31 CTU SOKOLOVSKA
2a05:1c46::/32 CTU SOKOLOVSKA
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WHOIS Details


                                                ASHandle:       AS203208
                                                OrgID:          AS203208
                                                ASName:         AS203208
                                                ASNumber:       AS203208
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

                                            
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Hosted Domains

There are no domains currently hosted on this ASN.

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Useful for Cybersecurity

Peers

There is 1 peer for this ASN.

Peers Name
AS6855 Slovak Telekom, a.s.
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS6855 Slovak Telekom, a.s.
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
2a05:1c41::b9:44:d4:c4 AS203208 Czech Telecommunication Office 6.59ms from Vienna, AT
2a05:1c40::1 AS203208 Czech Telecommunication Office 1.08ms from Prague, CZ
185.68.212.98 AS203208 Czech Telecommunication Office 0.79ms 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
107.13.230.248 AS11426 Charter Communications Inc 10.57ms from Ashburn, US
156.195.187.120 AS8452 TE-AS 8.55ms from Cairo, EG
178.203.136.136 AS3209 Vodafone GmbH 5.87ms from Duesseldorf, DE
18.156.76.248 AS16509 Amazon.com, Inc. 0.15ms from Frankfurt am Main, DE
2.204.75.232 AS3209 Vodafone GmbH 4.96ms from Hamburg, DE
60.183.106.24 AS4134 CHINANET-BACKBONE 6.63ms from Hangzhou, CN
72.209.143.24 AS22773 Cox Communications Inc. 8.12ms from Kansas City, US
109.148.67.184 AS2856 British Telecommunications PLC 14.55ms from London, GB
86.137.250.200 AS2856 British Telecommunications PLC 6.56ms from London, GB
72.229.62.40 AS12271 Charter Communications Inc 4.10ms from New York City, US
1.237.249.216 AS9318 SK Broadband Co Ltd 1.59ms from Seoul, KR
194.103.51.40 AS51747 Internet Vikings International AB 0.87ms from Stockholm, SE
124.95.126.248 AS4837 CHINA UNICOM China169 Backbone 10.02ms from Tieling, CN
3.126.211.8 AS16509 Amazon.com, Inc. 0.20ms from Frankfurt am Main, DE
5.147.91.40 AS3209 Vodafone GmbH 11.88ms from Frankfurt am Main, DE
174.65.186.168 AS22773 Cox Communications Inc. 8.16ms from Los Angeles, US
170.187.239.72 AS63949 Akamai Connected Cloud 0.16ms from Mumbai, IN
159.108.226.120 AS2024 Eversource Energy 4.61ms from New York City, US
167.8.15.8 AS63167 TEGNA Inc. 1.28ms from Seattle, US
219.251.52.56 AS9318 SK Broadband Co Ltd 1.29ms from Seoul, KR
203.183.59.168 AS4694 IDC Frontier Inc. 6.89ms from Tokyo, JP
204.52.12.200 AS46708 Allied International Corp of VA. 0.74ms from Ashburn, US
76.125.10.232 AS7922 Comcast Cable Communications, LLC 4.55ms from Ashburn, US
68.119.209.232 AS20115 Charter Communications LLC 8.69ms from Atlanta, US
118.174.111.40 AS23969 TOT Public Company Limited 10.09ms from Bangkok, TH

Traceroute

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

$
traceroute -a -n -q1 -f3 -m11 185.68.213.1
traceroute to 185.68.213.1 (185.68.213.1): 11 hops max, 52 byte packets
3 [] 1.178.73.236 17.011 ms
4 [] 1.178.73.237 16.553 ms
5 *
7 [AS203208] 185.68.212.2 16.881 ms
8 [AS203208] 185.68.212.1 16.929 ms
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Milan, IT
On

Related Networks

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 AS203208 at robtex.

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