Autonomous System details

AS43757

ICZ a.s.  ·  i.cz

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AS43757 – ICZ a.s.

Field Value
Country Czechia
Website i.cz
Hosted domains 84
IPv4 addresses 2,304
IPv6 addresses 1,208,925,819,614,629,174,706,176
ASN type Business
Registry ripe
Allocated 18 years ago on Sep 24, 2007
Updated 3 months ago on Oct 02, 2025
Netblock Company Num of IPs
78.31.24.0/21 ICZ a.s. 2,048
192.108.126.0/24 ICZ a.s. 256
Netblock Company
2001:67c:1578::/48 ICZ a.s.
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WHOIS Details


                                                ASHandle:       AS43757
                                                OrgID:          AS43757
                                                ASName:         AS43757
                                                ASNumber:       AS43757
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

                                            
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Hosted Domains

There are 84 domain names hosted across 3 IP addresses on this ASN.

IP Address Domain Domains on this IP
78.31.26.115 █████████ 76
78.31.27.181 ██████████ 10
78.31.27.187 ████████ 1

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Useful for Cybersecurity

Peers

There are 3 peers for this ASN.

Peers Name
AS5578 SWAN, a.s.
AS5610 O2 Czech Republic, a.s.
AS6855 Slovak Telekom, a.s.
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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS5578 SWAN, a.s.
AS5610 O2 Czech Republic, a.s.
AS6855 Slovak Telekom, a.s.
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
78.31.29.1 AS43757 ICZ a.s. 1.24ms from Prague, CZ
2001:67c:1578:8101:0:1:0:2 AS43757 ICZ a.s. 1.16ms from Prague, CZ
78.31.25.2 AS43757 ICZ a.s. 1.18ms from Prague, CZ
78.31.31.254 AS43757 ICZ a.s. 1.20ms from Prague, CZ
78.31.27.89 AS43757 ICZ a.s. 1.17ms from Prague, CZ
78.31.26.66 AS43757 ICZ a.s. 1.17ms from Prague, CZ
78.31.24.254 AS43757 ICZ a.s. 0.97ms from Prague, CZ
192.108.126.10 AS43757 ICZ a.s. 2.32ms from Bratislava, SK

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
206.210.18.93 AS7163 New York Life Insurance Company 2.12ms from Atlanta, US
114.249.127.157 AS4808 China Unicom Beijing Province Network 3.19ms from Beijing, CN
84.47.107.29 AS6855 Slovak Telekom, a.s. 5.94ms from Bratislava, SK
119.4.50.109 AS4837 CHINA UNICOM China169 Backbone 2.17ms from Chengdu, CN
2.205.173.157 AS3209 Vodafone GmbH 6.00ms from Frankfurt am Main, DE
35.228.191.93 AS396982 Google LLC 0.14ms from Hamina, FI
121.203.221.237 AS17924 SmarTone Mobile Communications Ltd 13.00ms from Hong Kong, HK
103.182.245.237 AS17995 PT iForte Global Internet 11.20ms from Jakarta, ID
203.89.24.61 AS24521 PT. DATA Utama Dinamika 0.22ms from Jakarta, ID
194.84.190.189 AS2854 LLC Orange Business Services 1.94ms from Moscow, RU
98.193.227.29 AS7922 Comcast Cable Communications, LLC 9.25ms from Murfreesboro, US
96.246.35.205 AS701 Verizon Business 2.63ms from New York City, US
71.226.235.125 AS7922 Comcast Cable Communications, LLC 6.60ms from New York City, US
90.24.44.189 AS3215 Orange S.A. 9.75ms from Paris, FR
192.175.37.13 AS48920 TOILE LIBRE 5.92ms from Paris, FR
66.7.229.125 AS14265 TPx Communications 1.27ms from San Jose, US
175.215.119.253 AS4766 Korea Telecom 6.58ms from Seoul, KR
124.170.225.253 AS7545 TPG Telecom Limited 0.99ms from Sydney, AU
35.79.171.77 AS16509 Amazon.com, Inc. 0.20ms from Tokyo, JP
24.254.212.157 AS22773 Cox Communications Inc. 9.03ms from Ashburn, US
120.5.117.205 AS4837 CHINA UNICOM China169 Backbone 6.21ms from Beijing, CN
138.185.131.253 AS263914 speed wifi telecom 14.52ms from Chapeco, BR
208.85.126.13 AS18830 HMH 0.79ms from Chicago, US
52.173.198.109 AS8075 Microsoft Corporation 0.34ms from Des Moines, US
68.73.113.13 AS7018 AT&T Enterprises, LLC 2.56ms from Durham, US

Traceroute

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

$
traceroute -a -n -q1 -f3 78.31.27.17
traceroute to 78.31.27.17 (78.31.27.17): 64 hops max, 52 byte packets
3 [] 91.210.16.23 1.242 ms
4 *
6 [AS43757] 78.31.27.17 1.713 ms
Measurement taken from IPinfo ProbeNet in Prague, CZ
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 AS43757 at robtex.

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