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 117,540
IPv4 addresses 58,880
IPv6 addresses 1,665,032,979,616,295,313,626,846,199,808
ASN type Hosting
Registry ripe
Allocated 23 years ago on Jun 11, 2002
Updated a month 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 117,540 domain names hosted across 5,748 IP addresses on this ASN.

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IP Address Domain Domains on this IP
81.31.37.22 ██████████ 12,111
83.167.244.201 ██████████ 12,106
83.167.244.202 ██████████ 9,566
185.25.185.106 ██████████ 4,119
83.167.249.7 ██████████ 2,610
77.93.211.215 ████████ 2,486
80.79.30.99 ██████████ 2,252
81.31.35.130 ██████████ 2,238
89.185.235.28 ██████████ 1,845
77.93.211.212 ██████████ 1,711

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Peers

There are 53 peers for this ASN.

Peers Name
AS1299 Arelion Sweden AB
AS13004 Serbian Open Exchange DOO
AS14840 BR.Digital Telecom
AS15958 CETINdoo-NET
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
AS22356 Durand do Brasil Ltda
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.
AS48921 Yoursafe Holding B.V.
AS49544 i3D.net B.V
AS50629 LWLcom GmbH
AS51134 Development 777 s.r.o.
AS51184 Fonira Telekom GmbH
AS51185 MainStreaming SpA
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
AS9009 M247 Europe SRL
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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 7 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.
AS48921 Yoursafe Holding B.V.
AS51134 Development 777 s.r.o.
AS64481 Joint Venture Dragon Capital LLC
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ASN API & Database

Pingable IPs

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

IP Address ASN Details
2a01:430:113:3::39 AS24971 MasterDC s.r.o. 2.99ms from Bratislava, SK
2a01:430:14e::1 AS24971 MasterDC s.r.o. 2.96ms from Bratislava, SK
2a01:430:68:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 2.95ms from Bratislava, SK
2a03:3b40:100::1 AS24971 MasterDC s.r.o. 2.88ms from Bratislava, SK
2a01:430:132::101 AS24971 MasterDC s.r.o. 2.91ms from Bratislava, SK
2a01:430:22e::1 AS24971 MasterDC s.r.o. 3.11ms from Bratislava, SK
2a01:430:11d::bad:b055 AS24971 MasterDC s.r.o. 2.87ms from Bratislava, SK
2a03:3b40:348:200::1 AS24971 MasterDC s.r.o. 14.29ms from Prague, CZ
185.145.160.1 AS24971 MasterDC s.r.o. 0.25ms from Prague, CZ
2a01:430:22f:0:beef:ffff:ffff:fffe AS24971 MasterDC s.r.o. 0.32ms from Prague, CZ
195.140.253.11 AS24971 MasterDC s.r.o. 0.24ms from Prague, CZ
2a01:430:264:1::1 AS24971 MasterDC s.r.o. 0.27ms from Prague, CZ
77.93.195.143 AS24971 MasterDC s.r.o. 0.18ms from Prague, CZ
2a01:430:222:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 0.36ms from Prague, CZ
2a0c:6380::39 AS24971 MasterDC s.r.o. 0.29ms from Prague, CZ
2a01:430:190:0:beef:ffff:ffff:fffe AS24971 MasterDC s.r.o. 2.96ms from Bratislava, SK
89.185.252.105 AS24971 MasterDC s.r.o. 0.18ms from Brno, CZ
81.31.46.193 AS24971 MasterDC s.r.o. 0.12ms from Brno, CZ
2a03:3b40:320::6 AS24971 MasterDC s.r.o. 12.89ms from Prague, CZ
77.93.193.70 AS24971 MasterDC s.r.o. 0.22ms from Prague, CZ
2a01:430:271:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 0.40ms from Prague, CZ
188.213.234.47 AS24971 MasterDC s.r.o. 0.32ms from Prague, CZ
2a03:3b40:288:0:9209:d0ff:fe0c:fdf6 AS24971 MasterDC s.r.o. 3.33ms from Prague, CZ
2a01:430:286:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 0.39ms from Prague, CZ
178.238.35.1 AS24971 MasterDC s.r.o. 0.29ms 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
92.116.230.43 AS8881 1&1 Versatel GmbH 2.22ms from Berlin, DE
54.187.78.107 AS16509 Amazon.com, Inc. 0.21ms from Boardman, US
137.128.108.123 AS668 United States Department of Defense (DoD) 4.23ms from Chicago, US
27.78.71.155 AS7552 Viettel Group 1.08ms from Ho Chi Minh City, VN
102.130.192.107 AS37645 Finstar - Sociedade de Investimento e Participacoes S.A 0.77ms from Luanda, AO
76.68.156.171 AS577 Bell Canada 2.38ms from Montreal, CA
142.41.247.91 AS852 TELUS Communications Inc. 3.94ms from Montreal, CA
70.174.181.251 AS22773 Cox Communications Inc. 3.64ms from Phoenix, US
106.241.218.91 AS3786 LG DACOM Corporation 2.42ms from Seoul, KR
14.91.195.251 AS4766 Korea Telecom 5.00ms from Seoul, KR
61.254.111.235 AS9318 SK Broadband Co Ltd 2.81ms from Seoul, KR
77.29.34.91 AS6821 Makedonski Telekom AD-Skopje 1.65ms from Skopje, MK
140.120.79.187 AS1659 Taiwan Academic Network (TANet) Information Center 1.03ms from Taichung, TW
178.212.26.235 AS197186 Prestiz Net Sp. z o.o. 8.12ms from Warsaw, PL
73.250.16.107 AS7922 Comcast Cable Communications, LLC 6.20ms from Ashburn, US
196.217.75.123 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 5.34ms from Casablanca, MA
221.206.194.155 AS4837 CHINA UNICOM China169 Backbone 14.25ms from Changchun, CN
184.154.135.123 AS32475 Internap Holding LLC 0.96ms from Chicago, US
51.182.114.219 AS5607 Sky UK Limited 1.31ms from Dublin, IE
86.156.42.27 AS2856 British Telecommunications PLC 3.17ms from Erith, GB
98.196.10.187 AS7922 Comcast Cable Communications, LLC 7.08ms from Houston, US
95.176.137.43 AS5603 Telekom Slovenije, d.d. 1.29ms from Ljubljana, SI
151.41.32.187 AS1267 WIND TRE S.P.A. 7.87ms from Milan, IT
209.98.55.219 AS8015 US Signal Company, L.L.C. 0.68ms from Minneapolis, US
64.19.187.91 AS7078 Monmouth Internet Corp 5.86ms from New York City, 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 77.93.211.149
traceroute to 77.93.211.149 (77.93.211.149): 64 hops max, 52 byte packets
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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