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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ASN API & Database

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
2a01:430:18d::2 AS24971 MasterDC s.r.o. 2.96ms from Bratislava, SK
2a01:430:22e::1 AS24971 MasterDC s.r.o. 3.08ms from Bratislava, SK
2a01:430:17e::1 AS24971 MasterDC s.r.o. 3.09ms from Bratislava, SK
2a01:430:24:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 3.03ms from Bratislava, SK
2a01:430:111::139 AS24971 MasterDC s.r.o. 2.88ms from Bratislava, SK
81.31.44.140 AS24971 MasterDC s.r.o. 0.14ms from Brno, CZ
83.167.224.33 AS24971 MasterDC s.r.o. 0.04ms from Brno, CZ
85.118.133.253 AS24971 MasterDC s.r.o. 0.21ms from Brno, CZ
185.8.167.2 AS24971 MasterDC s.r.o. 0.22ms from Brno, CZ
83.167.245.253 AS24971 MasterDC s.r.o. 0.43ms from Prague, CZ
2a01:430:22f::238:184:1 AS24971 MasterDC s.r.o. 0.32ms from Prague, CZ
2a03:3b40:2a0:ffff::1 AS24971 MasterDC s.r.o. 11.28ms from Prague, CZ
89.185.230.66 AS24971 MasterDC s.r.o. 0.24ms from Prague, CZ
2a03:3b40:209::1 AS24971 MasterDC s.r.o. 6.30ms from Prague, CZ
2a01:430:266::cc:109 AS24971 MasterDC s.r.o. 0.44ms from Prague, CZ
89.185.255.249 AS24971 MasterDC s.r.o. 0.12ms from Brno, CZ
185.58.42.231 AS24971 MasterDC s.r.o. 0.12ms from Brno, CZ
89.185.224.26 AS24971 MasterDC s.r.o. 0.19ms from Brno, CZ
77.93.206.80 AS24971 MasterDC s.r.o. 0.14ms from Brno, CZ
77.93.216.41 AS24971 MasterDC s.r.o. 0.23ms from Prague, CZ
193.169.161.1 AS24971 MasterDC s.r.o. 0.24ms from Prague, CZ
5.180.201.253 AS24971 MasterDC s.r.o. 0.22ms from Prague, CZ
2a01:430:219::1 AS24971 MasterDC s.r.o. 0.29ms from Prague, CZ
77.93.199.27 AS24971 MasterDC s.r.o. 0.21ms from Prague, CZ
37.205.13.217 AS24971 MasterDC s.r.o. 0.24ms 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
104.13.88.11 AS7018 AT&T Enterprises, LLC 1.25ms from Atlanta, US
207.193.245.91 AS7018 AT&T Enterprises, LLC 10.05ms from Atlanta, US
197.79.62.203 AS37611 AFRIHOST SP (PTY) LTD 14.77ms from Cape Town, ZA
23.201.102.155 AS20940 Akamai International B.V. 0.81ms from Chennai, IN
98.214.168.91 AS7922 Comcast Cable Communications, LLC 5.10ms from Chicago, US
176.34.221.155 AS16509 Amazon.com, Inc. 0.29ms from Dublin, IE
222.114.46.139 AS4766 Korea Telecom 3.12ms from Incheon, KR
211.194.228.43 AS4766 Korea Telecom 6.19ms from Incheon, KR
182.181.193.235 AS17557 Pakistan Telecommunication Company Limited 10.46ms from Islamabad, PK
86.2.247.91 AS5089 Virgin Media Limited 2.12ms from London, GB
79.32.69.91 AS3269 Telecom Italia S.p.A. 8.55ms from Milan, IT
120.51.65.75 AS2519 ARTERIA Networks Corporation 5.30ms from Osaka, JP
217.108.43.203 AS3215 Orange S.A. 3.05ms from Paris, FR
85.207.100.59 AS25248 RADIOKOMUNIKACE a.s. 0.36ms from Prague, CZ
183.113.229.251 AS4766 Korea Telecom 1.79ms from Seoul, KR
35.76.201.219 AS16509 Amazon.com, Inc. 0.22ms from Tokyo, JP
202.152.140.27 AS23951 PT JEMBATAN CITRA NUSANTARA 0.66ms from Yogyakarta, ID
38.88.53.27 AS174 Cogent Communications, LLC 0.42ms from Denver, US
109.250.95.107 AS8881 1&1 Versatel GmbH 3.59ms from Frankfurt am Main, DE
88.70.165.203 AS3209 Vodafone GmbH 4.11ms from Hamburg, DE
72.188.174.107 AS33363 Charter Communications, Inc 14.97ms from Orlando, US
106.173.48.59 AS2516 KDDI CORPORATION 0.51ms from Osaka, JP
37.8.92.139 AS12975 PALTEL Autonomous System 5.55ms from Tel Aviv, IL
188.125.181.27 AS4049 CELLO GROUP LIMITED 0.25ms from Auckland, NZ
156.218.48.139 AS8452 TE-AS 6.47ms from Cairo, EG

Traceroute

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

$
traceroute -a -n -q1 -f2 83.167.250.35
traceroute to 83.167.250.35 (83.167.250.35): 64 hops max, 52 byte packets
2 [] 194.30.187.85 2.957 ms
3 *
4 [AS24971] 80.79.22.167 4.488 ms
Measurement taken from IPinfo ProbeNet in Bratislava, SK
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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