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.
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

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
78.31.27.213 AS43757 ICZ a.s. 1.25ms from Prague, CZ
192.108.126.13 AS43757 ICZ a.s. 2.32ms from Bratislava, SK
78.31.29.2 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
78.31.31.254 AS43757 ICZ a.s. 1.40ms from Prague, CZ
78.31.26.189 AS43757 ICZ a.s. 1.19ms from Prague, CZ
78.31.24.254 AS43757 ICZ a.s. 0.97ms 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
213.222.186.141 AS21334 One Hungary Ltd. 12.01ms from Budapest, HU
63.35.255.109 AS16509 Amazon.com, Inc. 0.12ms from Dublin, IE
176.198.185.253 AS3209 Vodafone GmbH 5.39ms from Frankfurt am Main, DE
84.154.58.221 AS3320 Deutsche Telekom AG 10.00ms from Frankfurt am Main, DE
77.232.210.13 AS9009 M247 Europe SRL 0.27ms from Frankfurt am Main, DE
171.229.164.93 AS7552 Viettel Group 5.14ms from Hanoi, VN
49.213.42.253 AS142145 PT MUSUBI BALI INTERKONEKSI 0.70ms from Jakarta, ID
154.65.127.141 AS328638 Letaba Networks (Pty) Ltd 5.63ms from Johannesburg, ZA
86.6.195.45 AS5089 Virgin Media Limited 8.49ms from London, GB
81.56.36.29 AS29447 SCALEWAY S.A.S. 13.74ms from Milan, IT
184.94.100.29 AS6461 Zayo Bandwidth 0.68ms from Montreal, CA
79.120.36.157 AS12714 PJSC MegaFon 1.45ms from Moscow, RU
217.15.57.253 AS201825 LLC ER-Telecom Moscow 1.11ms from Moscow, RU
187.92.19.189 AS10429 TELEFÔNICA BRASIL S.A 1.03ms from Osasco, BR
75.221.74.157 AS6167 Verizon Business 6.94ms from San Jose, US
69.113.1.29 AS6128 Cablevision Systems Corp. 7.15ms from Secaucus, US
175.120.25.237 AS9318 SK Broadband Co Ltd 1.38ms from Seoul, KR
18.179.50.125 AS16509 Amazon.com, Inc. 0.82ms from Tokyo, JP
153.198.131.45 AS4713 NTT DOCOMO BUSINESS,Inc. 7.42ms from Tokyo, JP
41.99.38.109 AS36947 Telecom Algeria 9.92ms from Valencia, ES
120.48.164.125 AS38365 Beijing Baidu Netcom Science and Technology Co., Ltd. 3.17ms from Beijing, CN
119.250.160.93 AS4837 CHINA UNICOM China169 Backbone 5.36ms from Beijing, CN
212.200.104.141 AS8400 TELEKOM SRBIJA a.d. 0.40ms from Belgrade, RS
71.194.29.13 AS7922 Comcast Cable Communications, LLC 3.85ms from Chicago, US
24.26.221.61 AS11427 Charter Communications Inc 7.76ms from Dallas, 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 78.31.24.49
traceroute to 78.31.24.49 (78.31.24.49): 64 hops max, 52 byte packets
3 [] 91.210.16.23 4.658 ms
4 *
5 [AS43757] 78.31.24.49 1.178 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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