Autonomous System details

AS39790

Web4U s.r.o.  ·  web4u.cz

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AS39790 – Web4U s.r.o.

Field Value
Country Czechia
Website web4u.cz
Hosted domains 47,562
IPv4 addresses 5,120
IPv6 addresses 158,456,325,028,528,676,000,000,000,000
ASN type Hosting
Registry ripe
Allocated 20 years ago on Apr 25, 2006
Updated a year ago on Feb 14, 2025
Netblock Company Num of IPs
81.91.80.0/20 Web4U s.r.o. 4,096
81.91.80.0/21 Web4U s.r.o. 2,048
81.91.88.0/21 Web4U s.r.o. 2,048
185.14.224.0/22 Web4U s.r.o. 1,024
185.14.224.0/23 WEB4U - customers 512
Netblock Company
2001:1568::/32 Web4U s.r.o.
2001:1568::/33 Web4U s.r.o.
2001:1568:8000::/33 Web4U s.r.o.
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WHOIS Details


                                                ASHandle:       AS39790
                                                OrgID:          AS39790
                                                ASName:         AS39790
                                                ASNumber:       AS39790
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

                                            
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Hosted Domains

There are 47,562 domain names hosted across 488 IP addresses on this ASN.

IP Address Domain Domains on this IP
81.91.86.14 █████████ 21,682
81.91.86.12 ██████████ 4,483
81.91.86.13 █████████ 2,641
81.91.86.11 ██████████ 2,288
81.91.86.10 ███████ 627
81.91.84.215 ██████████ 438
81.91.84.107 ██████████ 334
81.91.84.51 ██████████ 312
81.91.92.221 █████████ 286
81.91.82.42 ██████████ 250

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Useful for Cybersecurity

Peers

There are 25 peers for this ASN.

Peers Name
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS198150 SIACOM JSC
AS199803 ComSource s.r.o.
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS24482 SG.GS
AS24940 Hetzner Online GmbH
AS25248 RADIOKOMUNIKACE a.s.
AS263444 Open X Tecnologia Ltda
AS29504 Freenet Liberec, z.s.
AS32590 Valve Corporation
AS33891 Core-Backbone GmbH
AS36236 NetActuate, Inc
AS39120 Convergenze S.p.A.
AS40994 Hohl IT e.U.
AS43733 Viva Armenia CJSC
AS44306 OMONIA d.o.o.
AS4455 IX Reach Ltd
AS47200 NIX.CZ z.s.p.o.
AS49544 i3D.net B.V
AS51184 Fonira Telekom GmbH
AS6204 INTERKVM HOST SRL
AS6663 Euroweb Romania S.R.L.
AS6881 NIX.CZ z.s.p.o.
AS6939 Hurricane Electric LLC
AS8218 Zayo Infrastructure France SA
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
AS199803 ComSource s.r.o.
AS25248 RADIOKOMUNIKACE a.s.
AS6939 Hurricane Electric LLC
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
81.91.83.168 AS39790 Web4U s.r.o. 0.39ms from Prague, CZ
2001:1568:9::225 AS39790 Web4U s.r.o. 0.71ms from Prague, CZ
2001:1568:ffff:32::34 AS39790 Web4U s.r.o. 0.60ms from Prague, CZ
81.91.85.19 AS39790 Web4U s.r.o. 0.39ms from Prague, CZ
2001:1568:fd::241 AS39790 Web4U s.r.o. 0.52ms from Prague, CZ
2001:1568:ac17:2::138 AS39790 Web4U s.r.o. 0.62ms from Prague, CZ
2001:1568:82:1::230 AS39790 Web4U s.r.o. 0.54ms from Prague, CZ
81.91.84.51 AS39790 Web4U s.r.o. 0.40ms from Prague, CZ
2001:1568:601::1 AS39790 Web4U s.r.o. 0.77ms from Prague, CZ
81.91.86.28 AS39790 Web4U s.r.o. 0.44ms from Prague, CZ
2001:1568:19::3 AS39790 Web4U s.r.o. 0.63ms from Prague, CZ
2001:1568:f::162:221 AS39790 Web4U s.r.o. 0.55ms from Prague, CZ
81.91.89.44 AS39790 Web4U s.r.o. 0.76ms from Prague, CZ
81.91.80.144 AS39790 Web4U s.r.o. 0.48ms from Prague, CZ
81.91.95.34 AS39790 Web4U s.r.o. 0.44ms from Prague, CZ
2001:1568:2::11 AS39790 Web4U s.r.o. 0.52ms from Prague, CZ
2001:1568:91:22::99 AS39790 Web4U s.r.o. 0.49ms from Prague, CZ
2001:1568:b:145::1 AS39790 Web4U s.r.o. 0.51ms from Prague, CZ
2001:1568:d:289::f7 AS39790 Web4U s.r.o. 0.48ms from Prague, CZ
2001:1568:602::1 AS39790 Web4U s.r.o. 0.85ms from Prague, CZ
2001:1568:93:60::1 AS39790 Web4U s.r.o. 0.54ms from Prague, CZ
185.14.224.198 AS39790 Web4U s.r.o. 0.37ms from Prague, CZ
2001:1568:85:178::1 AS39790 Web4U s.r.o. 0.73ms from Prague, CZ
2001:1568:900::114 AS39790 Web4U s.r.o. 0.65ms from Prague, CZ
81.91.92.226 AS39790 Web4U s.r.o. 0.42ms 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
82.165.96.62 AS8560 IONOS SE 0.71ms from Berlin, DE
213.222.131.254 AS21334 One Hungary Ltd. 1.12ms from Budapest, HU
86.59.166.94 AS5483 Magyar Telekom Plc. 0.90ms from Budapest, HU
98.25.133.174 AS11426 Charter Communications Inc 8.54ms from Charlotte, US
117.193.183.222 AS9829 National Internet Backbone 4.35ms from Chennai, IN
129.229.238.254 AS668 United States Department of Defense (DoD) 4.19ms from Chicago, US
1.36.129.254 AS4760 HKT Limited 0.82ms from Hong Kong, HK
124.216.153.62 AS45361 Ulsan Jung-Ang Broadcasting Network 7.54ms from Incheon, KR
36.94.76.174 AS7713 PT Telekomunikasi Indonesia 9.83ms from Jakarta, ID
103.154.249.254 AS7474 SingTel Optus Pty Ltd 2.86ms from Melbourne, AU
91.80.157.62 AS30722 Fastweb SpA 17.12ms from Milan, IT
61.115.245.254 AS10019 Matsusaka Cable-TV Station Inc. 3.19ms from Osaka, JP
125.11.65.254 AS9824 JCOM Co., Ltd. 9.97ms from Osaka, JP
213.36.130.206 AS12322 Free SAS 0.97ms from Paris, FR
93.140.248.174 AS5391 Hrvatski Telekom d.d. 6.27ms from Podgorica, ME
112.235.197.206 AS4837 CHINA UNICOM China169 Backbone 6.59ms from Qingdao, CN
107.20.144.94 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
5.3.183.254 AS51570 JSC ER-Telecom Holding 1.14ms from Saint Petersburg, RU
118.47.70.190 AS4766 Korea Telecom 7.29ms from Seoul, KR
60.48.82.110 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 14.94ms from Singapore, SG
20.48.233.94 AS8075 Microsoft Corporation 0.17ms from Toronto, CA
174.7.177.142 AS6327 Shaw Communications 7.43ms from Vancouver, CA
199.136.159.206 AS4155 USDA 1.40ms from Ashburn, US
178.24.204.254 AS3209 Vodafone GmbH 2.62ms from Berlin, DE
186.99.193.142 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 14.91ms from Bogota, CO

Traceroute

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

$
traceroute -a -n -q1 -m7 185.14.227.244
traceroute to 185.14.227.244 (185.14.227.244): 7 hops max, 52 byte packets
1 [AS15169] 74.125.252.113 148.781 ms
2 [AS15169] 192.178.252.186 148.813 ms
3 *
4 [AS39790] 81.91.95.9 154.022 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in The Dalles, US
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 AS39790 at robtex.

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