AS number details

AS24971

MasterDC s.r.o. · master.cz

Czechia

bittorrent

vpn

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AS24971 – MasterDC s.r.o.

Field	Value
Country	Czechia
Website	master.cz
Hosted domains	116,463
Number of IPv4	58,880
Number of IPv6	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	10 months ago on Nov 04, 2024

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
178.238.32.0/20	MasterDC s.r.o.	4,096
80.79.16.0/20	MasterDC s.r.o.	4,096
81.31.32.0/20	MasterDC s.r.o.	4,096
149.62.144.0/21	MasterDC s.r.o.	2,048
85.118.128.0/21	MasterDC s.r.o.	2,048
185.145.160.0/22	Etnetera Core a.s.	1,024
185.239.216.0/22	AdminIT, 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
194.145.180.0/22	ServerNow s.r.o.	1,024
195.140.252.0/22	Virtualmaster, s.r.o.	1,024
37.205.12.0/22	vpsFree.cz, z.s.	1,024
37.205.8.0/22	vpsFree.cz, z.s.	1,024
5.180.200.0/22	Bydzovsky s.r.o.	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
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
130.193.16.0/24	BNV Technologies, s.r.o.	256
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

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.
2a03:3b40:100::/40	vpsFree.cz - IPv6 - Brno 2
2a03:3b40::/40	vpsFree.cz - IPv6 - Prague 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 116,463 domain names hosted across 5,743 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
81.31.37.22	██████████	11,962
83.167.244.201	██████████	11,719
83.167.244.202	██████████	9,374
185.25.185.106	████████	4,021
77.93.211.215	████████	2,608
83.167.249.7	██████████	2,555
81.31.35.130	██████████	2,163
80.79.30.99	██████████	2,159
89.185.235.28	██████████	1,825
77.93.211.212	██████████	1,793

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Peers

There are 50 peers for this ASN.

Peers	Name
AS1299	Arelion Sweden AB
AS13004	Serbian Open Exchange DOO
AS14840	BR.Digital Provider
AS15943	wilhelm.tel GmbH
AS15958	CETINdoo-NET
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS197451	Brno University of Technology
AS198150	SIACOM JSC
AS204957	GREEN FLOID LLC
AS20562	Broadband Hosting B.V.
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
AS28917	Fiord Networks, UAB
AS29049	Delta Telecom Ltd
AS29504	Freenet Liberec, z.s.
AS3212	Telemach Slovenija d.o.o.
AS33891	Core-Backbone GmbH
AS34224	Neterra Ltd.
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
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
AS5405	Inter.link GmbH
AS57304	JSC "RetnNet"
AS57463	NetIX Communications JSC
AS59890	Kabel-TV Lampert GmbH & Co KG
AS60068	Datacamp Limited
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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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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Pingable IPs

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

IP Address	ASN	Details
2a01:430:10b:1::2	AS24971 MasterDC s.r.o.	`2.94ms` from Bratislava, SK
2a01:430:144::2	AS24971 MasterDC s.r.o.	`2.96ms` from Bratislava, SK
2a01:430:176:0:beef:ffff:ffff:ffff	AS24971 MasterDC s.r.o.	`2.97ms` from Bratislava, SK
83.167.224.33	AS24971 MasterDC s.r.o.	`0.04ms` from Brno, CZ
77.93.211.119	AS24971 MasterDC s.r.o.	`0.14ms` from Brno, CZ
81.31.40.234	AS24971 MasterDC s.r.o.	`0.10ms` from Brno, CZ
185.8.167.2	AS24971 MasterDC s.r.o.	`0.24ms` from Brno, CZ
83.167.249.17	AS24971 MasterDC s.r.o.	`0.16ms` from Brno, CZ
2a01:430:275::2	AS24971 MasterDC s.r.o.	`0.46ms` from Prague, CZ
2a01:430:20c::35	AS24971 MasterDC s.r.o.	`0.27ms` from Prague, CZ
2a01:430:51::25:111	AS24971 MasterDC s.r.o.	`0.33ms` from Prague, CZ
2a01:430:27c:0:beef:ffff:ffff:ffff	AS24971 MasterDC s.r.o.	`0.36ms` from Prague, CZ
2a01:430:259::68	AS24971 MasterDC s.r.o.	`0.35ms` from Prague, CZ
2a01:430:a:100::21	AS24971 MasterDC s.r.o.	`2.87ms` from Bratislava, SK
2a01:430:53::8300:159	AS24971 MasterDC s.r.o.	`2.91ms` from Bratislava, SK
2a01:430:22e::1	AS24971 MasterDC s.r.o.	`3.20ms` from Bratislava, SK
2a01:430:16:1c00::9	AS24971 MasterDC s.r.o.	`2.92ms` from Bratislava, SK
2a01:430:6::76	AS24971 MasterDC s.r.o.	`2.92ms` from Bratislava, SK
81.31.39.187	AS24971 MasterDC s.r.o.	`0.15ms` from Brno, CZ
185.8.166.62	AS24971 MasterDC s.r.o.	`0.23ms` from Brno, CZ
194.145.181.240	AS24971 MasterDC s.r.o.	`0.11ms` from Brno, CZ
81.31.44.140	AS24971 MasterDC s.r.o.	`0.14ms` from Brno, CZ
149.62.145.108	AS24971 MasterDC s.r.o.	`0.13ms` from Brno, CZ
2a01:430:25b:3::10	AS24971 MasterDC s.r.o.	`0.22ms` from Prague, CZ
2a01:430:280::3	AS24971 MasterDC s.r.o.	`0.28ms` 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
82.168.51.155	AS1136 KPN B.V.	`3.18ms` from Amsterdam, NL
118.25.215.43	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.80ms` from Chengdu, CN
24.15.34.43	AS7922 Comcast Cable Communications, LLC	`5.63ms` from Chicago, US
52.208.227.139	AS16509 Amazon.com, Inc.	`0.24ms` from Dublin, IE
81.245.133.107	AS5432 Proximus NV	`5.01ms` from Gravelines, FR
154.82.77.43	AS399077 Tcloudnet	`0.41ms` from Hong Kong, HK
113.236.207.75	AS4837 CHINA UNICOM China169 Backbone	`9.79ms` from Liaoyang, CN
113.227.245.171	AS4837 CHINA UNICOM China169 Backbone	`8.83ms` from Liaoyang, CN
81.36.121.203	AS3352 TELEFONICA DE ESPANA S.A.U.	`7.42ms` from Madrid, ES
52.247.204.123	AS8075 Microsoft Corporation	`0.36ms` from Quincy, US
179.170.86.171	AS26599 TELEFÔNICA BRASIL S.A	`17.89ms` from Rio de Janeiro, BR
211.223.226.11	AS10042 SUSEONG COLLEGE	`4.86ms` from Seoul, KR
182.218.18.203	AS17858 LG POWERCOMM	`2.10ms` from Seoul, KR
14.41.144.107	AS4766 Korea Telecom	`6.39ms` from Seoul, KR
14.61.102.139	AS4766 Korea Telecom	`6.78ms` from Seoul, KR
13.49.38.171	AS16509 Amazon.com, Inc.	`0.13ms` from Stockholm, SE
60.119.90.187	AS17676 SoftBank Corp.	`2.79ms` from Tokyo, JP
24.150.83.139	AS7992 Cogeco Connexion Inc.	`7.06ms` from Toronto, CA
34.65.155.107	AS396982 Google LLC	`0.10ms` from Zuerich, CH
124.205.216.11	AS4808 China Unicom Beijing Province Network	`5.27ms` from Beijing, CN
91.58.67.75	AS3320 Deutsche Telekom AG	`4.15ms` from Berlin, DE
54.184.182.91	AS16509 Amazon.com, Inc.	`0.12ms` from Boardman, US
75.204.251.171	AS6167 Verizon Business	`12.93ms` from Chicago, US
78.163.77.43	AS9121 Turk Telekomunikasyon Anonim Sirketi	`14.07ms` from Istanbul, TR
103.166.49.203	AS139460 PT Maxindo Mitra Solusi	`12.50ms` from Jakarta, ID

Traceroute

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

traceroute -a -n -q1 -f3 77.93.194.139

traceroute to 77.93.194.139 (77.93.194.139): 64 hops max, 52 byte packets

3 [AS24971] 83.167.254.192 0.22 ms

4 [AS24971] 83.167.254.201 0.279 ms

5 *

6 [AS24971] 77.93.194.139 0.232 ms

Measurement taken from

IPinfo ProbeNet in Brno, CZ

On August 17th 2025

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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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