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
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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
2001:1568:2::11 AS39790 Web4U s.r.o. 0.52ms from Prague, CZ
2001:1568:601::1 AS39790 Web4U s.r.o. 0.77ms from Prague, CZ
2001:1568:502::1 AS39790 Web4U s.r.o. 0.57ms from Prague, CZ
2001:1568:b:145::1 AS39790 Web4U s.r.o. 0.51ms from Prague, CZ
2001:1568:19::3 AS39790 Web4U s.r.o. 0.63ms from Prague, CZ
2001:1568:91:22::99 AS39790 Web4U s.r.o. 0.49ms from Prague, CZ
2001:1568:900::114 AS39790 Web4U s.r.o. 0.65ms from Prague, CZ
81.91.82.230 AS39790 Web4U s.r.o. 0.38ms from Prague, CZ
2001:1568:9::225 AS39790 Web4U s.r.o. 0.71ms from Prague, CZ
2001:1568:602::1 AS39790 Web4U s.r.o. 0.85ms from Prague, CZ
2001:1568:82:1::230 AS39790 Web4U s.r.o. 0.54ms from Prague, CZ
2001:1568:f::162:221 AS39790 Web4U s.r.o. 0.55ms from Prague, CZ
185.14.224.198 AS39790 Web4U s.r.o. 0.37ms from Prague, CZ
81.91.92.226 AS39790 Web4U s.r.o. 0.42ms from Prague, CZ
81.91.95.34 AS39790 Web4U s.r.o. 0.44ms from Prague, CZ
81.91.86.28 AS39790 Web4U s.r.o. 0.44ms from Prague, CZ
81.91.81.18 AS39790 Web4U s.r.o. 0.42ms from Prague, CZ
81.91.80.144 AS39790 Web4U s.r.o. 0.48ms from Prague, CZ
2001:1568:ffff:32::34 AS39790 Web4U s.r.o. 0.60ms from Prague, CZ
2001:1568:93:60::1 AS39790 Web4U s.r.o. 0.54ms from Prague, CZ
2001:1568:ac17:2::138 AS39790 Web4U s.r.o. 0.62ms from Prague, CZ
81.91.93.60 AS39790 Web4U s.r.o. 0.53ms from Prague, CZ
81.91.87.10 AS39790 Web4U s.r.o. 0.40ms from Prague, CZ
2001:1568:84:210::1 AS39790 Web4U s.r.o. 0.69ms from Prague, CZ
2001:1568:fd::241 AS39790 Web4U s.r.o. 0.52ms 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
173.240.128.14 AS16433 NORTH CENTRAL TELEPHONE COOPERATIVE CORPORATION 11.19ms from Atlanta, US
168.182.116.254 AS21713 Bulloch County Rural Telephone Cooperative, Inc. 7.27ms from Atlanta, US
20.221.203.46 AS8075 Microsoft Corporation 0.37ms from Chicago, US
3.16.115.126 AS16509 Amazon.com, Inc. 0.10ms from Columbus, US
45.17.81.222 AS7018 AT&T Enterprises, LLC 2.37ms from Dallas, US
72.240.45.78 AS13490 Buckeye Cablevision, Inc. 2.89ms from Detroit, US
52.155.220.158 AS8075 Microsoft Corporation 0.20ms from Dublin, IE
112.172.192.254 AS4766 Korea Telecom 1.17ms from Incheon, KR
60.49.177.254 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 2.03ms from Kuala Lumpur, MY
31.153.74.142 AS6866 Cyprus Telecommunications Authority 2.38ms from Larnaca, CY
82.43.39.46 AS5089 Virgin Media Limited 3.56ms from London, GB
121.92.223.254 AS150359 Cable Television TOYAMA Inc. 6.39ms from Osaka, JP
18.65.117.110 AS16509 Amazon.com, Inc. 0.20ms from Osaka, JP
45.162.71.62 AS268507 Prefeitura de Balneário Camboriú 7.29ms from Porto Alegre, BR
211.251.29.254 AS4766 Korea Telecom 1.92ms from Seoul, KR
210.14.66.30 AS17775 shanghai science and technology network communication limited company 3.71ms from Shanghai, CN
36.224.77.238 AS3462 Data Communication Business Group 1.63ms from Taipei, TW
77.118.159.206 AS8437 Hutchison Drei Austria GmbH 2.05ms from Vienna, AT
125.40.141.254 AS4837 CHINA UNICOM China169 Backbone 2.67ms from Zhengzhou, CN
61.158.175.126 AS4837 CHINA UNICOM China169 Backbone 4.56ms from Zhengzhou, CN
20.31.93.46 AS8075 Microsoft Corporation 0.22ms from Amsterdam, NL
209.164.248.254 AS20222 Plant Telephone Company 6.57ms from Atlanta, US
54.149.215.222 AS16509 Amazon.com, Inc. 0.37ms from Boardman, US
56.137.106.126 AS8987 Amazon Data Services Ireland Ltd 0.30ms from Boardman, US
69.84.222.30 AS27382 FirstLight Networks, LLC 2.21ms from Boston, US

Traceroute

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

$
traceroute -a -n -q1 -f4 185.14.224.65
traceroute to 185.14.224.65 (185.14.224.65): 64 hops max, 52 byte packets
4 [] 91.210.16.49 0.613 ms
5 *
6 [] 185.138.110.51 0.754 ms
7 [AS39790] 185.14.224.65 32.588 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 AS39790 at robtex.

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