AS number 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 46,326
Number of IPv4 5,120
Number of IPv6 158,456,325,028,528,675,187,087,900,672
ASN type Hosting
Registry ripe
Allocated 19 years ago on Apr 25, 2006
Updated 7 months 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 46,326 domain names hosted across 488 IP addresses on this ASN.

IP Address Domain Domains on this IP
81.91.86.14 █████████ 26,080
81.91.86.12 ██████████ 5,402
81.91.86.13 ██████████ 3,294
81.91.86.11 ██████████ 2,660
81.91.86.10 ███████ 692
81.91.84.215 ██████████ 452
81.91.84.51 ██████████ 354
81.91.84.107 ██████████ 351
81.91.92.221 ██████████ 344
81.91.82.42 ██████████ 277

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Useful for Cybersecurity

Peers

There are 23 peers for this ASN.

Peers Name
AS14840 BR.Digital Provider
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS198150 SIACOM JSC
AS199803 ComSource
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS22356 Durand do Brasil Ltda
AS24482 SG.GS
AS25248 RADIOKOMUNIKACE a.s.
AS263444 Open X Tecnologia Ltda
AS29504 Freenet Liberec, z.s.
AS33891 Core-Backbone GmbH
AS36236 NetActuate, Inc
AS39120 Convergenze S.p.A.
AS40994 Hohl IT e.U.
AS4455 IX Reach Ltd
AS47200 NIX.CZ z.s.p.o.
AS49544 i3D.net B.V
AS5405 Inter.link GmbH
AS57463 NetIX Communications JSC
AS6204 INTERKVM HOST SRL
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
AS25248 RADIOKOMUNIKACE a.s.
AS6939 Hurricane Electric LLC
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
81.91.84.166 AS39790 Web4U s.r.o. 0.48ms from Prague, CZ
81.91.83.168 AS39790 Web4U s.r.o. 0.49ms from Prague, CZ
2001:1568:f::162:221 AS39790 Web4U s.r.o. 0.57ms from Prague, CZ
2001:1568:fd:104::235 AS39790 Web4U s.r.o. 0.62ms from Prague, CZ
2001:1568:84:131::1 AS39790 Web4U s.r.o. 0.59ms from Prague, CZ
2001:1568:b:145::1 AS39790 Web4U s.r.o. 0.56ms from Prague, CZ
2001:1568:92:41:3::1 AS39790 Web4U s.r.o. 0.58ms from Prague, CZ
2001:1568:13::216 AS39790 Web4U s.r.o. 0.55ms from Prague, CZ
2001:1568:17::92 AS39790 Web4U s.r.o. 0.72ms from Prague, CZ
81.91.85.35 AS39790 Web4U s.r.o. 0.51ms from Prague, CZ
2001:1568:2::12 AS39790 Web4U s.r.o. 0.56ms from Prague, CZ
81.91.91.14 AS39790 Web4U s.r.o. 0.50ms from Prague, CZ
2001:1568:d:289::b101 AS39790 Web4U s.r.o. 0.55ms from Prague, CZ
2001:1568:900::114 AS39790 Web4U s.r.o. 0.70ms from Prague, CZ
2001:1568:9::148 AS39790 Web4U s.r.o. 0.78ms from Prague, CZ
2001:1568:19::2 AS39790 Web4U s.r.o. 0.69ms from Prague, CZ
81.91.80.114 AS39790 Web4U s.r.o. 0.46ms from Prague, CZ
2001:1568:85:178::1 AS39790 Web4U s.r.o. 0.90ms from Prague, CZ
81.91.92.229 AS39790 Web4U s.r.o. 0.53ms from Prague, CZ
81.91.95.37 AS39790 Web4U s.r.o. 0.63ms from Prague, CZ
2001:1568:502::1 AS39790 Web4U s.r.o. 0.59ms from Prague, CZ
81.91.93.48 AS39790 Web4U s.r.o. 0.61ms from Prague, CZ
81.91.89.43 AS39790 Web4U s.r.o. 0.73ms from Prague, CZ
81.91.82.19 AS39790 Web4U s.r.o. 0.49ms from Prague, CZ
81.91.81.17 AS39790 Web4U s.r.o. 0.53ms 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
91.96.240.238 AS9145 EWE TEL GmbH 7.18ms from Amsterdam, NL
204.232.247.142 AS27357 Rackspace Hosting 0.36ms from Ashburn, US
108.69.150.78 AS7018 AT&T Enterprises, LLC 2.30ms from Atlanta, US
188.6.195.46 AS5483 Magyar Telekom Plc. 5.37ms from Budapest, HU
108.71.67.254 AS7018 AT&T Enterprises, LLC 6.21ms from Chicago, US
89.28.9.254 AS31252 StarNet Solutii SRL 0.45ms from Chisinau, MD
20.228.51.206 AS8075 Microsoft Corporation 0.21ms from Des Moines, US
87.183.73.222 AS3320 Deutsche Telekom AG 9.68ms from Frankfurt am Main, DE
144.223.63.30 AS174 Cogent Communications 0.68ms from Honolulu, US
136.34.117.238 AS16591 Google Fiber Inc. 0.55ms from Kansas City, US
42.178.161.94 AS4837 CHINA UNICOM China169 Backbone 10.40ms from Liaoyang, CN
86.140.211.158 AS2856 British Telecommunications PLC 4.44ms from London, GB
86.134.28.222 AS2856 British Telecommunications PLC 4.08ms from London, GB
90.198.211.206 AS5607 Sky UK Limited 4.01ms from London, GB
99.6.8.142 AS7018 AT&T Enterprises, LLC 2.16ms from Los Angeles, US
79.154.106.46 AS3352 TELEFONICA DE ESPANA S.A.U. 8.99ms from Madrid, ES
99.122.156.78 AS7018 AT&T Enterprises, LLC 2.63ms from Miami, US
63.224.19.254 AS209 CenturyLink Communications, LLC 0.50ms from Minneapolis, US
78.194.206.222 AS12322 Free SAS 6.41ms from Paris, FR
89.158.245.158 AS15557 Societe Francaise Du Radiotelephone - SFR SA 10.42ms from Paris, FR
81.255.209.110 AS3215 Orange S.A. 0.95ms from Paris, FR
177.152.43.78 AS28169 BITCOM PROVEDOR DE SERVICOS DE INTERNET LTDA 2.33ms from Porto Alegre, BR
54.215.155.206 AS16509 Amazon.com, Inc. 0.15ms from San Jose, US
187.138.25.30 AS8151 UNINET 10.44ms from Santiago de Queretaro, MX
59.25.178.78 AS4766 Korea Telecom 4.46ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -f2 -m10 185.14.226.105
traceroute to 185.14.226.105 (185.14.226.105): 10 hops max, 52 byte packets
2 [] 156.146.32.140 0.169 ms
3 [AS60068] 185.229.188.4 33.267 ms
4 [AS13194] 185.0.20.246 32.197 ms
6 *
7 [AS39790] 81.91.95.9 34.088 ms
8 *
9 *
10 *
Measurement taken from IPinfo ProbeNet in Stockholm, SE
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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