Autonomous System details

AS24971

MasterDC s.r.o.  ·  master.cz

Czechia

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

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 5 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.

Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view WHOIS details › 

                                                ASHandle:       AS24971
                                                OrgID:          AS24971
                                                ASName:         AS24971
                                                ASNumber:       AS24971
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP WHOIS API & Database

Hosted Domains

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

Join for free to explore hosted domains ›
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

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API & Database

Peers

There are 49 peers for this ASN.

Peers Name
AS1299 Arelion Sweden AB
AS13194 Bite IP Network
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
AS22356 Durand do Brasil Ltda
AS24482 SG.GS
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.
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
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS1299 Arelion Sweden AB
AS6939 Hurricane Electric LLC
AS9002 RETN Limited
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
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
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
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
2a01:430:120::4d5d:db6e AS24971 MasterDC s.r.o. 2.86ms from Bratislava, SK
185.58.42.227 AS24971 MasterDC s.r.o. 0.13ms from Brno, CZ
77.93.209.126 AS24971 MasterDC s.r.o. 0.19ms from Brno, CZ
85.118.133.253 AS24971 MasterDC s.r.o. 0.18ms from Brno, CZ
83.167.244.155 AS24971 MasterDC s.r.o. 0.16ms from Brno, CZ
2a01:430:270::f8 AS24971 MasterDC s.r.o. 0.32ms from Prague, CZ
2a01:430:17:1::ffff:1536 AS24971 MasterDC s.r.o. 0.29ms from Prague, CZ
2a03:3b40:fe:17a::1 AS24971 MasterDC s.r.o. 0.26ms from Prague, CZ
2a03:3b40:200::1 AS24971 MasterDC s.r.o. 0.29ms from Prague, CZ
178.238.34.1 AS24971 MasterDC s.r.o. 0.32ms from Prague, CZ
80.79.25.113 AS24971 MasterDC s.r.o. 0.29ms from Prague, CZ
2a01:430:222::122 AS24971 MasterDC s.r.o. 0.30ms from Prague, CZ
2a01:430:28f:0:beef:ffff:ffff:ffff AS24971 MasterDC s.r.o. 0.42ms from Prague, CZ
2a01:430:20d::1 AS24971 MasterDC s.r.o. 0.34ms from Prague, CZ
89.185.230.67 AS24971 MasterDC s.r.o. 0.24ms from Prague, CZ
2a01:430:256:0:5054:ff:fe7a:d396 AS24971 MasterDC s.r.o. 0.29ms from Prague, CZ
178.238.35.2 AS24971 MasterDC s.r.o. 0.33ms from Prague, CZ
2a01:430:16a::1 AS24971 MasterDC s.r.o. 2.96ms from Bratislava, SK
2a01:430:194::1 AS24971 MasterDC s.r.o. 2.99ms from Bratislava, SK
2a01:430:184::1 AS24971 MasterDC s.r.o. 2.97ms from Bratislava, SK
2a01:430:175::2 AS24971 MasterDC s.r.o. 2.92ms from Bratislava, SK
81.31.42.245 AS24971 MasterDC s.r.o. 0.19ms from Brno, CZ
77.93.200.3 AS24971 MasterDC s.r.o. 0.17ms from Brno, CZ
91.214.193.253 AS24971 MasterDC s.r.o. 0.20ms from Brno, CZ
194.145.181.240 AS24971 MasterDC s.r.o. 0.12ms 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
52.2.33.219 AS14618 Amazon.com, Inc. 0.52ms from Ashburn, US
100.25.253.203 AS14618 Amazon.com, Inc. 0.51ms from Ashburn, US
173.31.253.219 AS30036 Mediacom Communications Corp 10.14ms from Atlanta, US
104.13.88.11 AS7018 AT&T Enterprises, LLC 1.27ms from Atlanta, US
80.144.158.59 AS3320 Deutsche Telekom AG 2.49ms from Berlin, DE
91.50.240.75 AS3320 Deutsche Telekom AG 4.61ms from Duesseldorf, DE
47.54.26.219 AS855 Bell Canada 10.88ms from Fredericton, CA
171.76.40.59 AS24560 Bharti Airtel Ltd., Telemedia Services 1.98ms from Kolkata, IN
52.110.3.11 AS8075 Microsoft Corporation 0.22ms from London, GB
195.93.246.27 AS44479 ROSSIYA SEGODNYA 1.28ms from Moscow, RU
223.105.252.11 AS56046 China Mobile communications corporation 1.58ms from Nanjing, CN
78.36.245.107 AS12389 PJSC Rostelecom 7.90ms from Saint Petersburg, RU
189.140.23.219 AS8151 UNINET 12.97ms from Santiago de Queretaro, MX
211.201.154.235 AS9318 SK Broadband Co Ltd 0.84ms from Seoul, KR
175.174.191.11 AS4837 CHINA UNICOM China169 Backbone 7.73ms from Tieling, CN
197.10.70.139 AS328880 STE INTERNET SMART SOLUTIONS 1.91ms from Tunis, TN
194.93.78.251 AS213648 Yorizon Verwaltungs GmbH 0.75ms from Vienna, AT
207.193.245.91 AS7018 AT&T Enterprises, LLC 10.10ms from Atlanta, US
39.63.253.11 AS17557 Pakistan Telecommunication Company Limited 3.07ms from Lahore, PK
46.244.243.43 AS8767 M-net Telekommunikations GmbH 5.07ms from Munich, DE
79.43.183.11 AS3269 Telecom Italia S.p.A. 7.70ms from Rome, IT
173.234.4.155 AS59253 LEASEWEB SINGAPORE PTE. LTD. 0.48ms from Singapore, SG
102.25.2.27 AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom) 14.42ms from Tunis, TN
1.193.153.139 AS4134 CHINANET-BACKBONE 6.89ms from Zhengzhou, CN
54.189.113.75 AS16509 Amazon.com, Inc. 0.21ms from Boardman, US

Traceroute

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

$
traceroute -a -n -q1 -f2 178.238.46.50
traceroute to 178.238.46.50 (178.238.46.50): 64 hops max, 52 byte packets
2 [] 194.30.187.85 2.908 ms
3 *
4 *
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.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs