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 6 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
78.31.24.254 AS43757 ICZ a.s. 0.97ms from Prague, CZ
78.31.27.213 AS43757 ICZ a.s. 1.25ms from Prague, CZ
192.108.126.13 AS43757 ICZ a.s. 2.32ms from Bratislava, SK
78.31.31.254 AS43757 ICZ a.s. 1.40ms from Prague, CZ
78.31.29.2 AS43757 ICZ a.s. 1.32ms from Prague, CZ
2001:67c:1578:8101:0:1:0:2 AS43757 ICZ a.s. 1.13ms from Prague, CZ
78.31.26.189 AS43757 ICZ a.s. 1.19ms from Prague, CZ
78.31.25.65 AS43757 ICZ a.s. 1.16ms 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
45.223.95.189 AS19551 Incapsula Inc 0.22ms from Amsterdam, NL
170.228.214.45 AS19524 Comerica Incorporated 1.21ms from Ashburn, US
50.219.119.109 AS7922 Comcast Cable Communications, LLC 0.46ms from Chicago, US
68.191.217.141 AS20115 Charter Communications LLC 5.87ms from Dallas, US
94.14.187.77 AS5607 Sky UK Limited 1.74ms from Erith, GB
2.216.248.61 AS5607 Sky UK Limited 1.46ms from Erith, GB
43.199.46.29 AS16509 Amazon.com, Inc. 0.37ms from Hong Kong, HK
103.60.110.189 AS55720 Gigabit Hosting Sdn Bhd 1.36ms from Hong Kong, HK
39.62.152.189 AS17557 Pakistan Telecommunication Company Limited 1.44ms from Islamabad, PK
88.7.234.93 AS3352 TELEFONICA DE ESPANA S.A.U. 5.49ms from Madrid, ES
193.38.41.205 AS210183 Design Offices GmbH 0.56ms from Nuernberg, DE
187.89.84.157 AS26599 TELEFÔNICA BRASIL S.A 1.10ms from Osasco, BR
24.139.121.93 AS14638 Liberty Communications of Puerto Rico LLC 0.32ms from San Juan, PR
80.65.64.253 AS9146 BIHNET Autonomus System 0.85ms from Sarajevo, BA
175.231.242.189 AS4766 Korea Telecom 1.83ms from Seoul, KR
149.202.40.61 AS16276 OVH SAS 0.14ms from Strasbourg, FR
18.179.50.125 AS16509 Amazon.com, Inc. 0.82ms from Tokyo, JP
3.210.154.125 AS14618 Amazon.com, Inc. 0.50ms from Ashburn, US
192.81.38.141 AS30091 Access Cable Television, Inc. 16.74ms from Atlanta, US
202.104.196.205 AS4134 CHINANET-BACKBONE 4.92ms from Guangzhou, CN
182.181.111.13 AS17557 Pakistan Telecommunication Company Limited 17.65ms from Karachi, PK
195.3.156.93 AS12998 BGNet LLC 0.34ms from Kyiv, UA
217.130.149.61 AS12430 VODAFONE ESPANA S.A.U. 13.69ms from Madrid, ES
88.19.131.29 AS3352 TELEFONICA DE ESPANA S.A.U. 8.43ms from Madrid, ES
24.189.133.221 AS6128 Cablevision Systems Corp. 9.19ms from New York City, 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 78.31.26.65
traceroute to 78.31.26.65 (78.31.26.65): 64 hops max, 52 byte packets
5 [AS43757] 78.31.26.65 1.766 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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