Discover new features of services for free! Sign up now

Top issuers

The most active issuers of SSL certificates in the world. Full list of issuers, actual counts of signed certificates.

# Issuer Certificate count
801 Forschungszentrum Juelich GmbH 182
802 Verimatrix 182
803 PARIS 182
804 Nokia 182
805 LG-NAS 181
806 Prive 180
807 Secteur public developpement durable 180
808 07086 180
809 Young 180
810 Citadel Server 180
811 cn 179
812 Universitaet Mannheim 179
813 LTD 179
814 12VPN Personal US 179
815 Tenable Network Security, Inc. 179
816 SomeCity 178
817 NDM Systems 177
818 Hochschule fuer Technik und Wirtschaft Berlin 177
819 Intersect Australia 177
820 Vas-Hosting.cz 177
821 Alert Logic 176
822 Universitaet Rostock 176
823 Internet 176
824 Maison 176
825 Technische Universitaet Hamburg-Harburg 174
826 Mirapoint, Inc. 173
827 Asentria 173
828 RuggedCom.com 172
829 The seedbox Company 172
830 sundray 172
831 Promise Technology Inc. 171
832 ABC 171
833 Oce 170
834 Schule 170
835 Coova.org 170
836 "PositiveSoftwareCorporation" 169
837 NetLock Halozatbiztonsagi Kft. 169
838 ASoft ltd. 169
839 Thecus Technology Corp. 168
840 StartCom CA 168
841 Hochschule Mittweida (FH) - University of Applied Sciences 168
842 Porticor Cloud Security 167
843 National Informatics Centre 167
844 Intesa Sanpaolo S.p.A. 167
845 Land Niedersachsen 167
846 local 167
847 KICA 167
848 Cloud 167
849 keine 167
850 MAIRIE 166
851 Ultraseedbox.com 166
852 Some-organisation 166
853 ICS_TREE 166
854 Alt-F 166
855 TCS 166
856 Candelis Inc. 166
857 Syrex Intranets SICS 165
858 UUDynamics USA,Inc. 165
859 Universitaet Osnabrueck 165
860 Universitaet Kiel 165
861 JAPAN TELECOM CO., LTD. 163
862 YMIRLINK Inc. 163
863 Heinrich-Heine-Universitaet Duesseldorf 162
864 Colt Engine 160
865 System Identity 159
866 Blue Box Group 159
867 state-institutions 158
868 TDC 158
869 Sipura Technology, Inc. 158
870 km 158
871 CASA 157
872 NCTU 157
873 Nethost CA 157
874 MATRIX COMSEC PVT. LTD. 156
875 Technische Universitaet Ilmenau 156
876 HJ 155
877 MICHELIN 154
878 Stanford University 154
879 Example Org 153
880 British Airways plc 153
881 Freistaat Sachsen 153
882 Fachhochschule Giessen-Friedberg 153
883 SAS Institute Inc. 153
884 Verizon 153
885 Heidelberger Druckmaschinen AG 152
886 T-Mobile 152
887 arkOS Servers 152
888 Ericsson 152
889 Compaq 152
890 Sangoma 151
891 Sony Computer Entertainment Inc. 151
892 getaCert - www.getacert.com 150
893 Control4 150
894 Otto-von-Guericke-Universitaet Magdeburg 150
895 Acano Ltd 150
896 CSL Computer Service Langenbach GmbH 150
897 My Large Organization Name 149
898 Yahoo 149
899 Net-Inter-Net 149
900 Entensys Corp. 149
901 Micros Systems, Inc. 148
902 VSHosting s.r.o. 148
903 Schweitzer Engineering Laboratories, Inc. 148
904 Intelerad Medical Systems, Inc. 148
905 E-Tuğra EBG Bilişim Teknolojileri ve Hizmetleri A.Ş. 148
906 GLAXOSMITHKLINE UK LTD 147
907 2N Telecommunications 147
908 ELKO 146
909 MST 146
910 Maipu Communication Technology., Ltd. 146
911 The Bunker Secure Hosting Ltd. 146
912 EFI 146
913 Red Lion Controls, Inc 146
914 Mimosa Networks, Inc 145
915 145
916 Universitaet Oldenburg 145
917 Thuis 145
918 Alcatel 144
919 GlaxoSmithKline 144
920 Zone Media 143
921 jeedom 143
922 Solinus, Inc 143
923 Celerra Certificate Authority 143
924 Numara Software 143
925 Stonesoft 143
926 Assisted Support 142
927 Siemens Subscriber Networks 142
928 Universitaet Bayreuth 142
929 office 142
930 SmartSight Networks Inc. 142
931 STRATO AG 141
932 eSoft, Inc. 141
933 Weatherford International 141
934 Netika 141
935 MTI Ltd 141
936 aerofs.com 141
937 MINEFI 141
938 Groupe LINAGORA 141
939 semantico 141
940 AS 140
941 Stunnel Developers 140
942 Tenon Intersystems 139
943 The Company 139
944 Universitaet Siegen 139
945 Caisse Nationale des Caisses dEpargne et de Prevoyance 139
946 University of Michigan 139
947 SEH 138
948 WatchMouse 138
949 FR 138
950 Awesome Inc 137
951 Bright Computing, Inc. 137
952 Nexus iSR 137
953 OneMedNet 136
954 GeniNetworks 136
955 CAE 136
956 BPS 136
957 Compellent Technologies 136
958 Universitaet Giessen 135
959 VNX Certificate Authority 135
960 LBS Westdeutsche Landesbausparkasse 135
961 MyOrg 134
962 Websense, Inc. 134
963 HOMESERVER 134
964 American Power Conversion 133
965 Family 133
966 ipacct.com 133
967 CONCEPTRONIC 132
968 Otto-Friedrich-Universitaet Bamberg 132
969 Universitaet Kassel 132
970 University of Toronto 132
971 Trustis Limited 131
972 bitOS 131
973 IPdiva Root 131
974 Domotica Labs 131
975 thereNow 130
976 Panasonic Corporation 130
977 Secure-Netz 130
978 RG Nets 129
979 ContentKeeper Technologies 129
980 Aruba Networks 129
981 Fachhochschule Luebeck 129
982 BitLeap, LLC 128
983 Zenon N.S.P. 128
984 survnet.national 128
985 Johannes Gutenberg-Universitaet Mainz 128
986 agentschap Centraal Informatiepunt Beroepen Gezondheidszorg 128
987 Certipost s.a./n.v. 128
988 Dell Computers Corporation 128
989 Agilex 128
990 FernUniversitaet in Hagen 128
991 Homenet 128
992 Duruan 128
993 Thales 128
994 default 127
995 Frogtrade 127
996 AA 127
997 ITS 127
998 LH.pl Sp. z o.o. 127
999 PRIV 127
1000 GEHRHSD 127