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Data as of Nov 5, 2026

77.93.192.0/19

No anonymizer space · no proxy exits in 30 days

MasterDC s.r.o.

Announcement
this exact prefix
RPKI valid
Announced by
AS24971
Type
Hosting

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
77.93.192.0/198,192CZ-MASTER-20070518MasterDC s.r.o. (ORG-MIS2-RIPE) · CZALLOCATED PAMay 18, 2007abuse@master.cz
└ 77.93.192.0/2816MASTER-AS4-CZ-MAIMaster Internet s.r.o.ASSIGNED PAMay 18, 2007abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.192.16/298DRAGON-CAPITAL-3-MAI-CZMaster Internet s.r.o.ASSIGNED PAOct 8, 2024abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.192.24/298LOG-CZ-MAIMaster Internet s.r.o.ASSIGNED PAJun 24, 2015abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.192.32/298AJATEX-5-CZ-MAIAJATEX s.r.o. (ORG-AS499-RIPE)ASSIGNED PAMar 19, 2015info@mobiwings.cz
└ 77.93.192.40/298HEALTHUNCOMPRO-2-MAI-CZhealth uncompromised a.s. (ORG-HUA7-RIPE)ASSIGNED PAMay 7, 2025abuse@master.cz
└ 77.93.192.48/2816INSTECZ-2-CZ-MAIINSTE.CZ s.r.o. (ORG-IS394-RIPE)ASSIGNED PADec 19, 2017abuse@master.cz
└ 77.93.192.64/2816HEALTHUNCOMPRO-1-MAI-CZhealth uncompromised a.s. (ORG-HUA7-RIPE)ASSIGNED PAMay 7, 2025abuse@master.cz
└ 77.93.192.80/298D157-1-MAI-CZAlwar Digital s.r.o.ASSIGNED PAOct 3, 2007abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.192.88/298NEUMAN-1-CZ-MAIMaster Internet s.r.o.ASSIGNED PAMar 8, 2021abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.192.96/2732DANDC-MGMT-1-MAI-CZDempsey & Clark s.r.o.ASSIGNED PAOct 1, 2007abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.192.128/2816ELEKTROHALAJCIK-1-MAI-CZELEKTRO HALAJCIK sro (ORG-EHS13-RIPE)ASSIGNED PAJan 7, 2026mihalooeu@gmail.com
└ 77.93.192.144/2816NOBLEGAMING-1-CZ-MAInoblegaming.bizASSIGNED PAJan 28, 2014abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.192.160/2732PAVELPAVLOVIC-1-CZ-MAIPavel Pavlovic (ORG-PP189-RIPE)ASSIGNED PAFeb 8, 2018pavlovic@centrum.cz
└ 77.93.192.192/2664PICABOCZ-3-MAI-CZPicabo.cz, a.s. (ORG-PA985-RIPE)ASSIGNED PAOct 10, 2017abuse@master.cz
└ 77.93.193.0/24256PRAHA-4D-VSPHERE-6-CZ-MAIShared VPS Master Internet s.r.o. vCloudASSIGNED PASep 6, 2017abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.194.0/24256BRNO-HOUSING4-CZ-MAIMaster Internet s.r.o.ASSIGNED PASep 7, 2007abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.195.0/2664IPEX-3-MAI-CZIPEX a.s. (ORG-IA1263-RIPE)ASSIGNED PAJan 30, 2014noc@ipex.cz
└ 77.93.195.64/2732CREDITINFO-2-MAI-CZCreditinfo Solutions, s.r.o. (ORG-CSS36-RIPE)ASSIGNED PAJul 10, 2019d.urban@creditinfosolutions.com
└ 77.93.195.96/2732MAHALUX-1-CZ-MAIMahalux, s.r.o.ASSIGNED PAJan 30, 2014abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.195.128/2732CREDITINFO-4-MAI-CZCreditinfo Solutions, s.r.o. (ORG-CSS36-RIPE)ASSIGNED PAMay 23, 2022d.urban@creditinfosolutions.com
└ 77.93.195.160/2732LO1-BRQMaster Internet s.r.o.ASSIGNED PADec 24, 2019abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.195.192/2664PICABOCZ-1-MAI-CZPicabo.cz, a.s. (ORG-PA985-RIPE)ASSIGNED PASep 24, 2013abuse@master.cz
└ 77.93.196.0/2732JAMI-COMP-1-MAI-CZJiri Hybl (ORG-JH23-RIPE)ASSIGNED PAOct 5, 2007abuse@bfp.cz
└ 77.93.196.32/2732GTS-HOUSING-1-CZ-MAIserverhousing THP PrahaASSIGNED PAAug 18, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.196.64/2664EASYWEBINTERMAXXX-1-CZ-MAIEasyWeb Intermaxxx s.r.o. (ORG-NS253-RIPE)ASSIGNED PADec 11, 2014l.cerny@intermaxgroup.com
└ 77.93.196.128/25128DC1-4D-HOUSING-21-CZ-MAIMaster Internet s.r.o.ASSIGNED PAJan 29, 2019abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.197.0/24256DC1-4D-HOUSING-3-CZ-MAIMaster Internet s.r.o.ASSIGNED PANov 19, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.198.0/2816USETRENOCZ-3-CZ-MAIUsetreno.cz s.r.o. (ORG-US65-RIPE)ASSIGNED PAMay 20, 2025webmaster@usetreno.cz
└ 77.93.198.32/2732USETRENOCZ-3-CZ-MAIUsetreno.cz s.r.o. (ORG-US65-RIPE)ASSIGNED PAMay 20, 2025webmaster@usetreno.cz
└ 77.93.198.80/298SERVERZONE-3-CZ-MAIServerZone s.r.o. (ORG-SS540-RIPE)ASSIGNED PAMar 3, 2017skrivy@skrivy.net
└ 77.93.198.88/298UNNITSTECH-3-MAI-CZUnnits Tech s.r.o. (ORG-UTS15-RIPE)ASSIGNED PAApr 10, 2024abuse@master.cz
└ 77.93.198.96/2816INFINITYENERGY-5-CZ-MAIInfinity Energy, s.r.o. (ORG-IES17-RIPE)ASSIGNED PAAug 21, 2026abuse@master.cz
└ 77.93.198.112/298UNNITSTECH-4-MAI-CZUnnits Tech s.r.o. (ORG-UTS15-RIPE)ASSIGNED PAApr 10, 2024abuse@master.cz
└ 77.93.198.120/298UNNITSTECH-5-MAI-CZUnnits Tech s.r.o. (ORG-UTS15-RIPE)ASSIGNED PAApr 10, 2024abuse@master.cz
└ 77.93.198.128/2732LERISCZ-8-CZ-MAILERIS.CZ s.r.o. (ORG-LS248-RIPE)ASSIGNED PADec 14, 2020filip.senk@leris.cz
└ 77.93.198.160/2816NETIO-SOLUTIONS-4-CZ-MAINetio Solutions server housingASSIGNED PAMay 23, 2013abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.198.176/298INFINITYENERGY-6-CZ-MAIInfinity Energy, s.r.o. (ORG-IES17-RIPE)ASSIGNED PASep 15, 2026abuse@master.cz
└ 77.93.198.184/298INFINITYENERGY-7-CZ-MAIInfinity Energy, s.r.o. (ORG-IES17-RIPE)ASSIGNED PASep 15, 2026abuse@master.cz
└ 77.93.198.224/2732A-NET-2-CZ-MAIa-net group, a.s. (ORG-AGA27-RIPE)ASSIGNED PAOct 26, 2010abuse@a-net.cz
└ 77.93.199.0/24256TTC-PRAHA-HOUSING4-CZ-MAIMaster Internet s.r.o.ASSIGNED PADec 4, 2007abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.200.0/24256BRNO-CEJL-VSPHERE-VPS-3-CZ-MAIvCloud Director VPSASSIGNED PAMar 26, 2014abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.201.0/2732KODANSKA-1-CZ-MAIKODANSKA OFFICE CENTER, s.r.o. (ORG-KOCS1-RIPE)ASSIGNED PAJun 23, 2014abuse@master.cz
└ 77.93.201.32/298IDC-4-CZ-MAIMasterDC s.r.o. (ORG-MIS2-RIPE) · CZASSIGNED PAMay 15, 2025abuse@master.cz
└ 77.93.201.48/2816ACONTE-2-MAI-CZACONTE, s.r.o. (ORG-AS548-RIPE)ASSIGNED PANov 7, 2016abuse@master.cz
└ 77.93.201.64/2732BRNO-CEJL-CLOUDSTACK-1-CZ-MAIcloudstackASSIGNED PAMay 4, 2026abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.201.96/298KODANSKA-3-CZ-MAIKODANSKA OFFICE CENTER, s.r.o. (ORG-KOCS1-RIPE)ASSIGNED PAJun 25, 2014abuse@master.cz
└ 77.93.201.104/298GMTECH-1-MAI-CZGMtech s.r.o. (ORG-GS429-RIPE)ASSIGNED PAJan 12, 2022michal.fiala@gmtech.cz
└ 77.93.201.112/298KUBITA-1-MAI-CZKUBITA s.r.o. (ORG-KS166-RIPE)ASSIGNED PAOct 5, 2016stanislav.zaoral@kubita.cz
└ 77.93.201.120/298ARION-1-CZ-MAIARION spol. s r.o. (ORG-ASSR5-RIPE)ASSIGNED PAOct 10, 2016dolejs@arion.cz
└ 77.93.201.192/2816MAHALUX-2-CZ-MAIMahalux, s.r.o.ASSIGNED PAJul 3, 2014abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.201.224/2732PROFICLOUDSERVICES-1-MAI-CZPROFI CLOUD SERVICES s.r.o. (ORG-PCSS3-RIPE)ASSIGNED PADec 11, 2019martin@pecha.pro
└ 77.93.202.0/24256ITTECHCZ-1-CZ-MAIIT-TechCZ, s.r.o. (ORG-IS370-RIPE)ASSIGNED PAOct 4, 2010podpora@4smart.cz
└ 77.93.203.0/24256BRNO-HOUSING15-CZ-MAIserverhousing BrnoASSIGNED PAAug 13, 2010abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.204.0/25128IDC-3-CZ-MAIMasterDC s.r.o. (ORG-MIS2-RIPE) · CZASSIGNED PAMay 7, 2025abuse@master.cz
└ 77.93.206.0/2664DC34-CEJL-BRQ-INFRA3-MAI-CZMaster Internet s.r.o.ASSIGNED PAJan 3, 2015abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.206.64/2816PRAHA-4D-DEDICATED-1-CZ-MAIMaster Internet s.r.o.ASSIGNED PADec 3, 2018abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.206.80/2816DNS-RESOLV-1-CZ-MAIMaster Internet s.r.o.ASSIGNED PAOct 31, 2025abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.206.96/2816CREDITINFO-3-MAI-CZCreditinfo Solutions, s.r.o. (ORG-CSS36-RIPE)ASSIGNED PAMar 10, 2022d.urban@creditinfosolutions.com
└ 77.93.206.112/2816NETWORK-IT-SOLUTION-CZ-MAINetwork IT Solution s.r.o. (ORG-NISS7-RIPE)ASSIGNED PAJun 2, 2011info@networkit.cz
└ 77.93.206.128/2816DEUFOL-2-MAI-CZDeufol Ceska republika, a.s. (ORG-DCRA1-RIPE)ASSIGNED PAApr 15, 2016abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.206.160/2732KUCERATOMAS-2-CZ-MAIKucera Tomas (ORG-KT64-RIPE)ASSIGNED PAJul 11, 2014tkucera@twe.cz
└ 77.93.206.192/2664ADMINIT-1-CZ-MAIAdminIT, s.r.o. (ORG-AS344-RIPE)ASSIGNED PAFeb 6, 2014lubos@matejka.sk
└ 77.93.207.0/24256BRNO-HOUSING5-CZ-MAIMaster Internet s.r.o.ASSIGNED PAFeb 5, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.208.0/24256TTC-PRAHA-HOUSING6-CZ-MAIMaster Internet s.r.o.ASSIGNED PAFeb 5, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.209.0/2732MEDIABOARD-2-CZ-MAIMediaboard s.r.o. (ORG-MMS29-RIPE)ASSIGNED PAMar 20, 2025abuse@mediaboard.com
└ 77.93.209.32/2816DC1-4D-HOUSING-20-CZ-MAIMaster Internet s.r.o.ASSIGNED PAJan 16, 2014abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.209.48/2816CHAPS-1-MAI-CZserver hosting Cejl Brno/Czech RepublicASSIGNED PAApr 14, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.209.64/2664BRNO-HOUSING18-ADD3-CZ-MAIMasterDC s.r.o. (ORG-MIS2-RIPE) · CZASSIGNED PAMay 4, 2018abuse@master.cz
└ 77.93.209.128/2732BNV-TECHNOLOGIES-2-CZ-MAIBnv technologiesASSIGNED PAApr 19, 2011abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.209.192/2816INFO21-1-CZ-MDCMasterDC s.r.o. (ORG-MIS2-RIPE) · CZASSIGNED PAJan 21, 2026abuse@master.cz
└ 77.93.209.208/304SMART-COMP-1-MAI-CZSMART Comp a.s. (ORG-SCA62-RIPE)ASSIGNED PAOct 18, 2021abuse@netbox.cz
└ 77.93.209.212/304COPROSYS-PTP-1-CZ-MAIcoprosys.czASSIGNED PAMar 9, 2009abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.209.216/298DRAGON-CAPITAL-2-MAI-CZDragon CapitalASSIGNED PADec 14, 2015abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.209.224/2732PICABOCZ-2-MAI-CZPicabo.cz, a.s. (ORG-PA985-RIPE)ASSIGNED PAMay 29, 2009abuse@master.cz
└ 77.93.211.16/2816PMX-HCI-2-CZ-MAIMasterDC s.r.o. (ORG-MIS2-RIPE) · CZASSIGNED PAApr 25, 2024abuse@master.cz
└ 77.93.211.32/2816MORRISCZ-2-MAI-CZMORRISCZ AIRSOFT s.r.o.ASSIGNED PANov 25, 2015abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.211.48/2816DOMAT-1-MAI-CZDomat Control System, s.r.o. (ORG-DCSS5-RIPE)ASSIGNED PAJan 24, 2022ict@domat.cz
└ 77.93.211.64/2664CISCO-INTERNATIONAL-LIMITED1-CZ-MAICisco International Limited organizacni slozka (ORG-CILO1-RIPE)ASSIGNED PAJul 22, 2025agent-billing@thousandeyes.com
└ 77.93.211.128/2664BRNO-HOUSING40-CZ-MAIMaster Internet s.r.o.ASSIGNED PANov 2, 2020abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.211.192/2664KADERA-BANAN-1-CZ-MAIbanan s.r.o. (ORG-BS190-RIPE)ASSIGNED PAJun 19, 2009banik@banan.cz
└ 77.93.215.0/24256BRNO-HOUSING6-CZ-MAIMaster Internet s.r.o.ASSIGNED PAMay 27, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.216.0/24256DC1-4D-HOUSING-1-CZ-MAIMaster Internet s.r.o.ASSIGNED PAMay 27, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.217.0/2732EMAN-1-CZ-MAIeMan s.r.o. (ORG-ES294-RIPE)ASSIGNED PAJan 6, 2015michal.kosek@eman.cz
└ 77.93.217.32/2816PADRTA-JIRI-1-CZ-MAIunknownASSIGNED PAApr 27, 2012abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.217.48/2816BRNO-HOUSING7-CZ-MAIServerhosting Brno Cejl additionalASSIGNED PAJul 10, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.217.64/2664C4626-2-CZ-MAIMasterDC s.r.o. (ORG-MIS2-RIPE) · CZASSIGNED PAJun 26, 2008abuse@master.cz
└ 77.93.217.128/25128PRAHA-4D-VSPHERE-5-CZ-MAIShared VPS Master Internet s.r.o. vCloudASSIGNED PAJun 5, 2012abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.218.0/2732LHOLUB-1-CZ-MAILibor Holub (ORG-LH31-RIPE)ASSIGNED PAJun 26, 2008abuse@svethostingu.cz
└ 77.93.218.32/2816ACTIMMY-1-CZ-MAIActimmy a.s. (ORG-AA2234-RIPE)ASSIGNED PAMay 7, 2019support@actimmy.cz
└ 77.93.218.48/2816INFINITYENERGY-3-CZ-MAIInfinity Energy, s.r.o. (ORG-IES17-RIPE)ASSIGNED PAMay 14, 2024abuse@master.cz
└ 77.93.218.64/2732PMX-HCI-3-CZ-MAIMasterDC s.r.o. (ORG-MIS2-RIPE) · CZASSIGNED PAJun 6, 2025abuse@master.cz
└ 77.93.218.96/2732TCMP-1-CZ-MAITCMP s.r.o.. housing PrahaASSIGNED PAApr 3, 2012abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.218.128/298DCIT-1-MAI-CZDCIT, a.s. (ORG-DA551-RIPE) · CZASSIGNED PAOct 5, 2020abuse@dcit.cz
└ 77.93.218.136/298UNNITSTECH-6-MAI-CZUnnits Tech s.r.o. (ORG-UTS15-RIPE)ASSIGNED PAApr 10, 2024abuse@master.cz
└ 77.93.218.144/2816INFINITYENERGY-4-CZ-MAIInfinity Energy, s.r.o. (ORG-IES17-RIPE)ASSIGNED PAMar 19, 2026abuse@master.cz
└ 77.93.218.160/2816SITTARDIA-3-CZ-MAISittardia s.r.o. (ORG-SS511-RIPE)ASSIGNED PAJun 17, 2015petr.kulda@sittardia.cz
└ 77.93.218.176/2816KODANSKA-4-CZ-MAIKODANSKA OFFICE CENTER, s.r.o. (ORG-KOCS1-RIPE)ASSIGNED PAJun 19, 2015abuse@master.cz
└ 77.93.218.192/2732SYSTEM4U-1-MAI-CZsystem4u s.r.o.ASSIGNED PAOct 16, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.218.224/2816INTACTO-GAMES-2-CZ-MAIIntacto GamesASSIGNED PASep 2, 2010abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.218.240/2816W-HOSTING-2-CZ-MAIW HOSTING, s.r.o.ASSIGNED PAJan 16, 2009abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.219.0/24256BRNO-CEJL-VSPHERE-VPS-2-CZ-MAIvCloud Director VPSASSIGNED PAMar 22, 2013abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.220.0/24256ANAFRA-1-CZ-MAIANAFRA s.r.o.ASSIGNED PAJul 25, 2008abuse@master.cz
via CZ-MASTER-20070518
└ 77.93.221.0/24256PROXMOX-6-CZ-MDCMasterDC s.r.o. (ORG-MIS2-RIPE) · CZASSIGNED PAOct 9, 2025abuse@master.cz
└ 77.93.222.0/24256BRNO-HOUSING9-CZ-MAIMaster Internet s.r.o.ASSIGNED PAMar 30, 2009abuse@master.cz
via CZ-MASTER-20070518

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS24971

CZ
Name
MasterDC s.r.o.
Type
Hosting
Registered
Jun 11, 2002
Domain
master.cz
Website
www.master.cz
Industry
Hosting and Cloud Provider
Spamhaus ASN-DROP
not listed