Autonomous System details

AS24971

MasterDC s.r.o.  ·  master.cz

Czechia

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AS24971 – MasterDC s.r.o.

Field Value
Country Czechia
Website master.cz
Hosted domains 117,772
IPv4 addresses 58,880
IPv6 addresses 1,665,032,979,616,295,313,626,846,199,808
ASN type Hosting
Registry ripe
Allocated 24 years ago on Jun 11, 2002
Updated 3 months ago on Oct 26, 2025

IP Ranges

Netblock Company Num of IPs
77.93.192.0/19 MasterDC s.r.o. 8,192
83.167.224.0/19 MasterDC s.r.o. 8,192
89.185.224.0/19 MasterDC s.r.o. 8,192
80.79.16.0/20 MasterDC s.r.o. 4,096
81.31.32.0/20 MasterDC s.r.o. 4,096
178.238.32.0/20 MasterDC s.r.o. 4,096
85.118.128.0/21 MasterDC s.r.o. 2,048
149.62.144.0/21 MasterDC s.r.o. 2,048
5.180.200.0/22 Bydzovsky s.r.o. 1,024
37.205.8.0/22 vpsFree.cz, z.s. 1,024
37.205.12.0/22 vpsFree.cz, z.s. 1,024
91.214.192.0/22 QCM, s.r.o. 1,024
91.226.216.0/22 W HOSTING, s.r.o. 1,024
185.25.184.0/22 NETIO Solutions s.r.o. 1,024
185.32.160.0/22 ANAFRA a.s. 1,024
185.58.40.0/22 MasterDC s.r.o. 1,024
185.85.164.0/22 ServerNow s.r.o. 1,024
185.145.160.0/22 Etnetera Core a.s. 1,024
185.239.216.0/22 AdminIT, s. r. o. 1,024
194.145.180.0/22 ServerNow s.r.o. 1,024
195.140.252.0/22 Virtualmaster, s.r.o. 1,024
176.227.168.0/23 HostingSolutions s.r.o. 512
185.8.164.0/23 vpsFree.cz - Prague3 512
185.8.166.0/23 vpsFree.cz - Brno3 512
188.213.234.0/23 NETIO Solutions s.r.o. 512
188.215.18.0/23 NETIO Solutions s.r.o. 512
193.169.160.0/23 Imarto Inc. 512
37.140.220.0/24 ProfiSMS s.r.o. 256
83.223.52.0/24 Yoursafe Holding B.V. 256
91.213.160.0/24 Internet Info, s.r.o. 256
91.216.179.0/24 oXyShop s.r.o. 256
92.63.56.0/24 NEW TELEKOM, spol. s r.o. 256
130.193.16.0/24 BNV Technologies, s.r.o. 256

Netblock Company
2a07:4880::/29 Etnetera Core a.s.
2a0c:6380::/29 AdminIT, s. r. o.
2a00:8220::/32 NETIO Solutions s.r.o.
2a00:a5a0::/32 ANAFRA a.s.
2a01:430::/32 MasterDC s.r.o.
2a03:7460::/32 ServerNow s.r.o.
2a0b:3240::/32 Bydzovsky s.r.o.
2a03:3b40:200::/39 vpsFree.cz, z.s.
2a03:3b40::/40 vpsFree.cz - IPv6 - Prague 2
2a03:3b40:100::/40 vpsFree.cz - IPv6 - Brno 2
2001:678:a50::/48 Imarto Inc.
2001:67c:68::/48 Internet Info, s.r.o.
2a04:16c0:200::/48 Yoursafe Holding B.V.

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WHOIS Details

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                                                ASHandle:       AS24971
                                                OrgID:          AS24971
                                                ASName:         AS24971
                                                ASNumber:       AS24971
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 117,772 domain names hosted across 5,768 IP addresses on this ASN.

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IP Address Domain Domains on this IP
83.167.244.201 ██████████ 12,263
81.31.37.22 ██████████ 12,239
83.167.244.202 ██████████ 9,612
185.25.185.106 ██████████ 4,247
83.167.249.7 ██████████ 2,642
77.93.211.215 ████████ 2,430
80.79.30.99 ██████████ 2,240
81.31.35.130 ██████████ 2,059
89.185.235.28 ██████████ 1,864
77.93.211.212 ██████████ 1,650

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Peers

There are 47 peers for this ASN.

Peers Name
AS1299 Arelion Sweden AB
AS14840 BR.Digital Telecom
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS197451 Brno University of Technology
AS198150 SIACOM JSC
AS204957 GREEN FLOID LLC
AS207167 mapnet IT services s.r.o.
AS21045 K-net Technical International Group, s.r.o.
AS211085 mapnet IT services s.r.o.
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS21320 GEANT Vereniging
AS24482 SG.GS
AS263444 Open X Tecnologia Ltda
AS28917 Fiord Networks, UAB
AS29049 Delta Telecom Ltd
AS29504 Freenet Liberec, z.s.
AS3212 Telemach Slovenija d.o.o.
AS32590 Valve Corporation
AS33891 Core-Backbone GmbH
AS35369 LINZ STROM GAS WAERME GmbH fuer Energiedienstleistungen und Telekommunikation
AS36236 NetActuate, Inc
AS37721 Virtual Technologies & Solutions
AS39120 Convergenze S.p.A.
AS40994 Hohl IT e.U.
AS41327 Fiber Telecom S.p.A.
AS43733 Viva Armenia CJSC
AS4455 IX Reach Ltd
AS44901 Belcloud LTD
AS47232 ISP Alliance a.s.
AS49544 i3D.net B.V
AS50629 LWLcom GmbH
AS51134 Development 777 s.r.o.
AS51184 Fonira Telekom GmbH
AS53062 ALT | GRUPO BRASIL TECPAR
AS5405 Inter.link GmbH
AS57304 JSC RetnNet
AS57463 NetIX Communications JSC
AS59890 Kabel-TV Lampert GmbH & Co KG
AS6204 INTERKVM HOST SRL
AS6424 EDGOO NETWORKS
AS64481 Joint Venture Dragon Capital LLC
AS6663 Euroweb Romania S.R.L.
AS6881 NIX.CZ z.s.p.o.
AS6939 Hurricane Electric LLC
AS8218 Zayo Infrastructure France SA
AS8529 Zain Omantel International FZ-LLC
AS9002 RETN Limited
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ASN API & Database

Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS1299 Arelion Sweden AB
AS6939 Hurricane Electric LLC
AS9002 RETN Limited
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Downstreams

There are 6 downstreams for this ASN.

Downstreams Name
AS204957 GREEN FLOID LLC
AS207167 mapnet IT services s.r.o.
AS21045 K-net Technical International Group, s.r.o.
AS211085 mapnet IT services s.r.o.
AS51134 Development 777 s.r.o.
AS64481 Joint Venture Dragon Capital LLC
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ASN API & Database

Pingable IPs

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

IP Address ASN Details
2a01:430:103:4::2 AS24971 MasterDC s.r.o. 2.92ms from Bratislava, SK
2a01:430:175::2 AS24971 MasterDC s.r.o. 2.95ms from Bratislava, SK
2a01:430:53::8300:159 AS24971 MasterDC s.r.o. 2.86ms from Bratislava, SK
2a01:430:18d::2 AS24971 MasterDC s.r.o. 2.96ms from Bratislava, SK
2a01:430:14c:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 2.95ms from Bratislava, SK
2a01:430:137:1::2 AS24971 MasterDC s.r.o. 2.87ms from Bratislava, SK
80.79.30.4 AS24971 MasterDC s.r.o. 0.12ms from Brno, CZ
2a01:430:12::1 AS24971 MasterDC s.r.o. 0.26ms from Prague, CZ
2a0b:3240::1 AS24971 MasterDC s.r.o. 0.20ms from Prague, CZ
2a03:3b40:288:0:9209:d0ff:fe0c:fdf6 AS24971 MasterDC s.r.o. 2.89ms from Prague, CZ
2a01:430:20f::1:1 AS24971 MasterDC s.r.o. 0.35ms from Prague, CZ
2a03:3b40:320::6 AS24971 MasterDC s.r.o. 12.57ms from Prague, CZ
2a01:430:22c:0:beef:ffff:ffff:fffe AS24971 MasterDC s.r.o. 0.37ms from Prague, CZ
2a01:430:24a::107 AS24971 MasterDC s.r.o. 0.32ms from Prague, CZ
2a01:430:10b:1::2 AS24971 MasterDC s.r.o. 2.85ms from Bratislava, SK
2a01:430:101:1000:1::2 AS24971 MasterDC s.r.o. 3.06ms from Bratislava, SK
2a01:430:144::2 AS24971 MasterDC s.r.o. 2.95ms from Bratislava, SK
2a01:430:33::6 AS24971 MasterDC s.r.o. 2.91ms from Bratislava, SK
2a01:430:306:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 2.99ms from Bratislava, SK
2a01:430:18e:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 3.00ms from Bratislava, SK
2a03:3b40:264::1 AS24971 MasterDC s.r.o. 21.27ms from Prague, CZ
2a03:3b40:348:200::1 AS24971 MasterDC s.r.o. 14.15ms from Prague, CZ
2a01:430:224::176 AS24971 MasterDC s.r.o. 0.30ms from Prague, CZ
178.238.35.2 AS24971 MasterDC s.r.o. 0.31ms from Prague, CZ
2a01:430:56::136 AS24971 MasterDC s.r.o. 0.25ms 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
99.171.132.139 AS7018 AT&T Enterprises, LLC 19.55ms from Atlanta, US
23.201.102.155 AS20940 Akamai International B.V. 0.81ms from Chennai, IN
188.237.63.203 AS8926 Moldtelecom SA 2.10ms from Chisinau, MD
173.91.245.107 AS10796 Charter Communications Inc 5.96ms from Cleveland, US
79.205.117.75 AS3320 Deutsche Telekom AG 8.08ms from Frankfurt am Main, DE
217.231.1.27 AS3320 Deutsche Telekom AG 7.56ms from Frankfurt am Main, DE
88.70.165.203 AS3209 Vodafone GmbH 4.11ms from Hamburg, DE
82.159.11.219 AS6739 VODAFONE ONO, S.A. 4.77ms from Madrid, ES
151.41.32.187 AS1267 WIND TRE S.P.A. 7.54ms from Milan, IT
79.7.219.91 AS3269 Telecom Italia S.p.A. 7.74ms from Milan, IT
58.208.97.123 AS4134 CHINANET-BACKBONE 4.95ms from Nanjing, CN
98.5.234.219 AS11351 Charter Communications Inc 12.62ms from New York City, US
192.98.105.91 AS1741 CSC - Tieteen tietotekniikan keskus Oy 5.46ms from Oulu, FI
81.251.42.187 AS3215 Orange S.A. 6.68ms from Paris, FR
128.32.172.139 AS25 University of California at Berkeley 2.45ms from San Jose, US
52.180.208.11 AS8075 Microsoft Corporation 1.38ms from Des Moines, US
43.165.4.219 AS132203 Tencent Building, Kejizhongyi Avenue 0.70ms from Frankfurt am Main, DE
217.83.154.187 AS3320 Deutsche Telekom AG 2.80ms from Frankfurt am Main, DE
104.143.245.139 AS202044 Getechbrothers, MB 0.13ms from Madrid, ES
95.232.137.27 AS3269 Telecom Italia S.p.A. 2.05ms from Milan, IT
73.10.89.59 AS7922 Comcast Cable Communications, LLC 5.92ms from Morris Plains, US
90.46.42.123 AS3215 Orange S.A. 1.86ms from Paris, FR
109.224.71.187 AS197197 CETIN a.s. 7.46ms from Prague, CZ
97.206.213.75 AS6167 Verizon Business 8.17ms from Santa Clara, US
191.31.137.27 AS18881 TELEFÔNICA BRASIL S.A 18.57ms from Sao Paulo, BR

Traceroute

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

$
traceroute -a -n -q1 -f3 77.93.205.29
traceroute to 77.93.205.29 (77.93.205.29): 64 hops max, 52 byte packets
4 [AS24971] 77.93.205.29 0.388 ms
Measurement taken from IPinfo ProbeNet in Brno, 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 AS24971 at robtex.

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