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 119,424
IPv4 addresses 58,880
IPv6 addresses 1,665,032,979,616,295,314,167,600,000,000
ASN type Hosting
Registry ripe
Allocated 24 years ago on Jun 11, 2002
Updated 19 days ago on Apr 15, 2026

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 119,424 domain names hosted across 5,809 IP addresses on this ASN.

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IP Address Domain Domains on this IP
83.167.244.201 ██████████ 11,503
81.31.37.22 ██████████ 9,451
83.167.244.202 ██████████ 9,160
83.167.249.7 ██████████ 2,116
81.31.35.130 ██████████ 2,102
80.79.30.99 ██████████ 1,963
77.93.211.215 ████████ 1,766
89.185.235.28 ██████████ 1,694
77.93.211.212 ██████████ 1,441
5.180.200.5 █████████ 1,327

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Peers

There are 52 peers for this ASN.

Peers Name
AS1299 Arelion Sweden AB
AS13194 Bite IP Network
AS132337 Axclusive
AS14840 BR.Digital Telecom
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS197451 Brno University of Technology
AS198150 SIACOM JSC
AS202857 INIZIO Internet Media s.r.o.
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
AS24940 Hetzner Online GmbH
AS263444 Open X Tecnologia Ltda
AS264409 GRUPO YAX
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
AS47232 ISP Alliance a.s.
AS47692 Nessus GmbH
AS48921 Yoursafe Holding B.V.
AS49544 i3D.net B.V
AS50629 LWLcom GmbH
AS51134 Development 777 s.r.o.
AS51184 Fonira Telekom GmbH
AS53062 ALT | GRUPO BRASIL TECPAR
AS57304 JSC RetnNet
AS57463 NetIX Communications JSC
AS59890 Kabel-TV Lampert GmbH & Co KG
AS6204 INTERKVM HOST SRL
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 8 downstreams for this ASN.

Downstreams Name
AS202857 INIZIO Internet Media s.r.o.
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

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

IP Address ASN Details
2a01:430:139:1::106 AS24971 MasterDC s.r.o. 2.92ms from Bratislava, SK
2a01:430:141:1::1 AS24971 MasterDC s.r.o. 2.96ms from Bratislava, SK
91.214.193.254 AS24971 MasterDC s.r.o. 0.22ms from Brno, CZ
85.118.131.112 AS24971 MasterDC s.r.o. 0.27ms from Brno, CZ
91.214.192.1 AS24971 MasterDC s.r.o. 0.22ms from Brno, CZ
80.79.30.29 AS24971 MasterDC s.r.o. 0.14ms from Brno, CZ
2a01:430:4d::ff AS24971 MasterDC s.r.o. 0.73ms from Prague, CZ
2a01:430:27f:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 0.35ms from Prague, CZ
2a01:430:150::1 AS24971 MasterDC s.r.o. 3.21ms from Prague, CZ
2a03:3b40:264::1 AS24971 MasterDC s.r.o. 20.96ms from Prague, CZ
91.226.216.249 AS24971 MasterDC s.r.o. 0.25ms from Prague, CZ
188.213.235.254 AS24971 MasterDC s.r.o. 0.43ms from Prague, CZ
80.79.17.2 AS24971 MasterDC s.r.o. 0.26ms from Prague, CZ
2a01:430:247::1 AS24971 MasterDC s.r.o. 0.41ms from Prague, CZ
2a01:430:264::2 AS24971 MasterDC s.r.o. 0.28ms from Prague, CZ
80.79.29.27 AS24971 MasterDC s.r.o. 0.30ms from Prague, CZ
2a01:430:22f::238:184:1 AS24971 MasterDC s.r.o. 0.32ms from Prague, CZ
2a01:430:219::1 AS24971 MasterDC s.r.o. 0.31ms from Prague, CZ
2a01:430:268::1 AS24971 MasterDC s.r.o. 0.39ms from Prague, CZ
2a01:430:215:1::1:1 AS24971 MasterDC s.r.o. 3.03ms from Bratislava, SK
2a01:430:193:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 2.96ms from Bratislava, SK
2a01:430:105::2 AS24971 MasterDC s.r.o. 2.90ms from Bratislava, SK
77.93.217.49 AS24971 MasterDC s.r.o. 0.18ms from Brno, CZ
81.31.34.2 AS24971 MasterDC s.r.o. 0.13ms from Brno, CZ
194.145.180.251 AS24971 MasterDC s.r.o. 0.11ms from Brno, 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
77.11.189.59 AS6805 Telefonica Germany GmbH & Co.OHG 2.30ms from Berlin, DE
20.110.201.235 AS8075 Microsoft Corporation 0.21ms from Boydton, US
107.10.107.107 AS10796 Charter Communications Inc 5.43ms from Chicago, US
38.254.57.27 AS30567 Dickson Electric System 11.32ms from Chicago, US
135.236.251.59 AS8075 Microsoft Corporation 0.20ms from Dublin, IE
45.153.90.203 AS202182 Koerber Pharma Software GmbH 3.42ms from Hamburg, DE
63.245.132.251 AS32694 H&B Communications Inc. 6.11ms from Kansas City, US
13.40.116.27 AS16509 Amazon.com, Inc. 0.60ms from London, GB
2.60.32.187 AS12389 PJSC Rostelecom 8.82ms from Novosibirsk, RU
82.124.182.203 AS3215 Orange S.A. 2.05ms from Paris, FR
72.94.58.187 AS701 Verizon Business 1.96ms from Philadelphia, US
3.227.25.251 AS14618 Amazon.com, Inc. 0.51ms from Reston, US
54.204.62.91 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
73.48.165.235 AS7922 Comcast Cable Communications, LLC 7.22ms from San Jose, US
175.199.119.43 AS4766 Korea Telecom 7.80ms from Seoul, KR
49.56.122.139 AS4766 Korea Telecom 2.11ms from Seoul, KR
13.210.228.235 AS16509 Amazon.com, Inc. 0.14ms from Sydney, AU
58.115.38.75 AS38851 TNET NET 7.31ms from Taipei, TW
118.78.162.203 AS4837 CHINA UNICOM China169 Backbone 7.58ms from Taiyuan, CN
195.48.8.75 AS1836 green.ch AG 0.59ms from Zuerich, CH
162.241.241.107 AS19871 Network Solutions, LLC 0.41ms from Atlanta, US
49.231.166.75 AS45458 SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX 1.90ms from Bangkok, TH
54.184.182.91 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
104.194.158.75 AS14956 RouterHosting LLC 0.68ms from Frankfurt am Main, DE
217.94.190.75 AS3320 Deutsche Telekom AG 2.54ms from Hamburg, DE

Traceroute

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

$
traceroute -a -n -q1 -f2 83.167.232.122
traceroute to 83.167.232.122 (83.167.232.122): 64 hops max, 52 byte packets
2 [] 91.210.16.85 204.166 ms
5 [AS24971] 81.31.45.130 0.994 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 AS24971 at robtex.

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