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 1,665,032,979,616,295,313,626,846,199,808
ASN type Hosting
Registry ripe
Allocated 24 years ago on Jun 11, 2002
Updated 4 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 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 ██████████ 12,395
81.31.37.22 ██████████ 12,310
83.167.244.202 ██████████ 9,708
185.25.185.106 ██████████ 4,371
83.167.249.7 ██████████ 2,654
77.93.211.215 ████████ 2,416
81.31.35.130 ██████████ 2,253
80.79.30.99 ██████████ 2,239
89.185.235.28 ██████████ 1,879
77.93.211.212 ██████████ 1,612

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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.
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
AS5405 Inter.link GmbH
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 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

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

IP Address ASN Details
2a01:430:144::2 AS24971 MasterDC s.r.o. 2.97ms from Bratislava, SK
2a01:430:28a::2 AS24971 MasterDC s.r.o. 0.28ms from Prague, CZ
83.167.240.132 AS24971 MasterDC s.r.o. 0.25ms from Prague, CZ
185.8.164.41 AS24971 MasterDC s.r.o. 0.27ms from Prague, CZ
2a01:430:45::2 AS24971 MasterDC s.r.o. 0.29ms from Prague, CZ
2a01:430:2e::157 AS24971 MasterDC s.r.o. 0.33ms from Prague, CZ
2a01:430:248::2 AS24971 MasterDC s.r.o. 0.31ms from Prague, CZ
37.205.13.226 AS24971 MasterDC s.r.o. 0.25ms from Prague, CZ
185.25.184.252 AS24971 MasterDC s.r.o. 0.27ms from Prague, CZ
2a01:430:244:4:beef:ffff:ffff:fffe AS24971 MasterDC s.r.o. 0.40ms from Prague, CZ
2a01:430:115::1 AS24971 MasterDC s.r.o. 2.97ms from Bratislava, SK
2a01:430:17e::1 AS24971 MasterDC s.r.o. 3.10ms from Bratislava, SK
81.31.35.252 AS24971 MasterDC s.r.o. 0.19ms from Brno, CZ
185.58.40.72 AS24971 MasterDC s.r.o. 0.14ms from Brno, CZ
89.185.225.24 AS24971 MasterDC s.r.o. 0.20ms from Brno, CZ
89.185.255.249 AS24971 MasterDC s.r.o. 0.11ms from Brno, CZ
81.31.34.23 AS24971 MasterDC s.r.o. 0.14ms from Brno, CZ
89.185.228.6 AS24971 MasterDC s.r.o. 0.24ms from Prague, CZ
2a01:430:261:1::254:2 AS24971 MasterDC s.r.o. 0.22ms from Prague, CZ
2a01:430:71:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 3.37ms from Prague, CZ
2a01:430:42:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 0.40ms from Prague, CZ
185.145.160.2 AS24971 MasterDC s.r.o. 0.32ms from Prague, CZ
2a0c:6380:1:103::1 AS24971 MasterDC s.r.o. 0.41ms from Prague, CZ
2a01:430:279:0:beef:ffff:ffff:fffe AS24971 MasterDC s.r.o. 0.37ms from Prague, CZ
2a01:430:284::1 AS24971 MasterDC s.r.o. 0.37ms 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
130.35.90.91 AS31898 Oracle Corporation 0.36ms from Ashburn, US
97.140.156.43 AS6167 Verizon Business 13.70ms from Atlanta, US
181.106.8.11 AS7303 Telecom Argentina S.A. 1.96ms from Cordoba, AR
35.232.109.155 AS396982 Google LLC 0.39ms from Council Bluffs, US
35.193.54.139 AS396982 Google LLC 0.37ms from Council Bluffs, US
183.60.243.75 AS4134 CHINANET-BACKBONE 2.45ms from Guangzhou, CN
203.113.174.11 AS7552 Viettel Group 0.20ms from Ho Chi Minh City, VN
104.143.245.139 AS202044 Getechbrothers, MB 0.11ms from Madrid, ES
90.147.123.251 AS137 Consortium GARR 5.06ms from Milan, IT
61.102.78.155 AS17839 LG HelloVision Corp. 2.15ms from Seoul, KR
59.106.165.171 AS9370 SAKURA Internet Inc. 0.68ms from Tokyo, JP
111.48.71.91 AS9808 China Mobile Communications Group Co., Ltd. 1.84ms from Wuhan, CN
108.39.116.43 AS701 Verizon Business 7.37ms from Ashburn, US
44.238.38.171 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
186.92.208.235 AS8048 CANTV Servicios, Venezuela 12.09ms from Caracas, VE
106.211.46.203 AS45609 Bharti Airtel Ltd. AS for GPRS Service 5.80ms from Delhi, IN
196.34.165.171 AS3741 Dimension Data 1.27ms from Johannesburg, ZA
151.104.37.139 AS1218 Oracle Corporation 0.79ms from London, GB
195.134.179.203 AS31115 INTRED S.P.A. 2.79ms from Milan, IT
128.32.172.139 AS25 University of California at Berkeley 2.45ms from San Jose, US
37.2.66.11 AS1257 Tele2 Sverige AB 0.63ms from Stockholm, SE
104.13.88.11 AS7018 AT&T Enterprises, LLC 1.22ms from Atlanta, US
44.235.25.107 AS16509 Amazon.com, Inc. 0.15ms from Boardman, US
186.114.45.171 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 15.48ms from Bogota, CO
97.177.59.43 AS6167 Verizon Business 11.60ms 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 -f3 77.93.195.62
traceroute to 77.93.195.62 (77.93.195.62): 64 hops max, 52 byte packets
3 [AS24971] 83.167.254.194 281.517 ms
4 [AS24971] 77.93.195.62 0.498 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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