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Top issuers

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

# Issuer Certificate count
601 Imperva Inc. 297
602 VASCO Data Security 295
603 Arbor Networks 295
604 Halon Security 295
605 A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH 294
606 Movie Masher, Inc. 292
607 Barracuda Networks, Inc 292
608 SonicWALL appliance 289
609 Southern Company Services, Inc. 288
610 Atos 288
611 company ltd 287
612 hp.com 286
613 Kentrox, Inc. 285
614 me 285
615 NetBotz Inc 285
616 Universitaet Bremen 284
617 RECRUIT CO.,LTD. 283
618 China Financial Certification Authority 283
619 Envenergy 282
620 Digium 281
621 Humboldt-Universitaet zu Berlin 280
622 Yola 278
623 Rackspace 278
624 BT 278
625 Research In Motion 277
626 Universitaet Augsburg 277
627 Orange 277
628 sinfor 277
629 Vultr 275
630 localhost.localdom 274
631 Georg-August-Universitaet Goettingen 274
632 Schneider Electric 274
633 AcumenHoldingsInc 273
634 Cisco ISA570-K9 273
635 Ops 273
636 WISeKey 272
637 US 271
638 ADC Technologies 270
639 epages 269
640 NO 268
641 Astrocom Corp. 268
642 Netika SARL 268
643 Nortel Networks 267
644 SDSC 267
645 INFN 267
646 Keyweb AG 267
647 ProPay, Inc. 265
648 Digidentity B.V. 264
649 Oracle Corporation, Inc. 263
650 Netop A/S 263
651 sfr 262
652 Trend Micro 260
653 University of Washington 260
654 certSIGN 259
655 MS 259
656 Bayerische Staatsbibliothek 258
657 Deutsche Post World Net 257
658 com 256
659 MyCompany Ltd. 255
660 Mirantis 255
661 Home Solutions AB 254
662 SpeedLine Solutions Inc. 253
663 VBrick Systems, Inc. 252
664 Kubernetes 250
665 Silver Peak Systems Inc 250
666 Universitaet Tuebingen 250
667 Technische Universitaet Dortmund 249
668 Dallmeier electronic 249
669 Johann Wolfgang Goethe-Universitaet 248
670 AVST 248
671 MAIL 247
672 Ministere en charge des affaires sanitaires et sociales 247
673 perso 246
674 One Organization 245
675 Hanbiro CA Root 245
676 neorouter.com 245
677 Nintendo of America, Inc. 245
678 Microsoft 244
679 ITT 242
680 Gesellschaft fuer wissenschaftliche Datenverarbeitung 241
681 Citrix Systems Inc. 241
682 Pivotal Inc. 240
683 Smart Computer Systems Ltd 239
684 Valued Datadomain Customer 238
685 První certifikační autorita, a.s. 238
686 Argancity 237
687 Teradici 235
688 Websense 234
689 Universitaet Regensburg 234
690 RBC Hosting Center 234
691 POSCOPLANTEC 233
692 Universitaet zu Koeln 232
693 Zentrum fuer Informationsverarbeitung und Informationstechnik 232
694 PLANET IC GmbH 232
695 Virginia Tech 231
696 Mulitable ERP-3T 230
697 Techcom(TM) 230
698 Axeda Corporation 230
699 Universitaet Duisburg-Essen 230
700 Leibniz-Rechenzentrum 228
701 eDial 228
702 NSW Department of Education and Communities 227
703 juniper 227
704 IND 226
705 Vidder 225
706 Universitaet Ulm 225
707 SILCA 225
708 Active Voice, LLC 225
709 IPS Certification Authority s.l. 224
710 33135 224
711 RESOL - Elektronische Regelungen GmbH 223
712 EzSeed 223
713 Universitaet Bielefeld 222
714 Example Inc 222
715 AddTrust AB 222
716 Universitaet Potsdam 221
717 Hellenic Academic and Research Institutions Cert. Authority 221
718 PROGICA 220
719 ACCV 220
720 Disig a.s. 219
721 Mojohost 218
722 Japanese Government 218
723 Hatteras Networks 217
724 GIP-CPS 217
725 Mirth Corporation 217
726 AGAVA Software Ltd. 217
727 adidas AG 216
728 ProxySG: TemporaryDefaultCertificate 216
729 Blue Coat SGVA Series 215
730 1A First Alternative 215
731 Global Technology Associates, Inc. 215
732 LGPKI 214
733 Accenture 213
734 The Cloud Networks 212
735 Vaultive RnD ProxyNG 211
736 Avocent Mergepoint Unity 211
737 ALCATEL-LUCENT 211
738 Technische Universitaet Chemnitz 210
739 Self employed 210
740 nodivide 210
741 $gcfg_account 210
742 RAD Data Communications 209
743 Bank of America 209
744 Innovative Interfaces 209
745 ENERCON 209
746 A 208
747 Netasq 206
748 First Organization 205
749 Your Organization 204
750 MultiTech 204
751 France Telecom SA 203
752 eYou 203
753 APC 202
754 ACME inc. 201
755 CENTRAL SECURITY PATROLS CO., LTD. 201
756 ApplianSys Ltd. 200
757 * 200
758 T-Systems Enterprise Services GmbH 200
759 Vodafone 200
760 Exalt Communications 199
761 MSE 199
762 ACME 198
763 Pound Example Certificate 198
764 Electronic Arts, Inc. 197
765 TNT 197
766 localdomain 197
767 ATT 197
768 Legendsec 196
769 KHI 196
770 X 196
771 Wilmington Area School District 195
772 SomeOrganization1064 194
773 Fort-Funston 194
774 Hostpoint GmbH 193
775 XinTong HuaAn Technologies Co., Ltd. 193
776 Bechtel Corporation 192
777 MarketWare - Soluções para Mercados Digitais, Lda. 192
778 Fry Inc. 192
779 VPN 191
780 Duale Hochschule Baden-Wuerttemberg 191
781 Uni-Konstanz 191
782 Latisys 190
783 Aristotle University of Thessaloniki 190
784 Fachhochschule Braunschweig/Wolfenbuettel 189
785 WebSpace-Forum e.K. 189
786 OpenVAS Users United 188
787 WellnessFX 188
788 Atsumi Electric 188
789 Cegid 188
790 Universitaet Wuerzburg 187
791 SiteGround LLC. 187
792 Etisalat 186
793 Cisco ISA570W-K9 186
794 codenes 185
795 OXEMIS 185
796 Company Name 185
797 Baidu 184
798 SAXA, Inc. 184
799 Universitaet Jena 183
800 Universitaet Passau 183