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