Report Description

This report, much like our original certs and CAs report, focuses on issuers of SSL enabling certificates found on web servers. Unlike our original report, however, this report has a couple of key differences to it:

• Reports on top 100 CAs. The original report only paid attention to the major CAs at the time the report was produced. This report lists the top 100 CAs for the month. You will find here many self-signing organizations such as universities, telecommunications firms, etc.
• Uses issuer name as identifier. Our original report only counted a certificate towards an organization if we were able to prove, by virtue of verifying the key, that the organization in question actually signed the certificate. This had a notable problem with it - we don't always have the public key of the CA. In at least one case, a CA doesn't make their public key available unless you sign a license agreement.

  This report doesn't have that problem, since it only uses the issuer Organization Name to uniquely identify the issuing CA.

CA	March 2016 Count	March 2016 %	February 2016 Count	February 2016 %	Growth %
GoDaddy.com, Inc.	548,877	21.29	554,228	21.29	0.01
COMODO CA Limited	404,538	15.69	435,237	16.72	-6.14
GeoTrust Inc.	372,491	14.45	375,431	14.42	0.19
DigiCert	278,987	10.82	281,463	10.81	0.09
GlobalSign nv-sa	171,863	6.67	143,938	5.53	20.57
Symantec Corporation	82,312	3.19	81,884	3.15	1.51
Gandi	81,424	3.16	81,249	3.12	1.20
thawte, Inc.	66,103	2.56	65,831	2.53	1.40
Starfield Technologies, Inc.	40,785	1.58	41,893	1.61	-1.69
GeoTrust, Inc.	40,695	1.58	44,985	1.73	-8.65
Unknown	31,706	1.23	32,348	1.24	-1.02
StartCom Ltd.	31,042	1.20	31,777	1.22	-1.35
Unizeto Technologies S.A.	30,961	1.20	30,987	1.19	0.90
Microsoft Corporation	29,889	1.16	29,660	1.14	1.76
Internet2	26,513	1.03	26,706	1.03	0.25
Verizon Enterprise Solutions	24,854	0.96	25,101	0.96	-0.01
Entrust, Inc.	24,445	0.95	24,658	0.95	0.11
Network Solutions L.L.C.	23,362	0.91	23,065	0.89	2.28
TERENA	22,823	0.89	23,217	0.89	-0.73
Parallels	16,891	0.66	17,473	0.67	-2.38
Verisign	15,708	0.61	18,149	0.70	-12.60
Trustwave Holdings, Inc.	12,629	0.49	12,825	0.49	-0.56
Thawte, Inc.	12,565	0.49	14,912	0.57	-14.91
SomeOrganization	10,923	0.42	11,142	0.43	-1.00
Let's Encrypt	10,740	0.42	7,591	0.29	42.87
Google Inc	9,866	0.38	9,872	0.38	0.92
QuoVadis Limited	6,674	0.26	6,126	0.24	10.01
AlphaSSL	6,005	0.23	6,475	0.25	-6.35
Cybertrust Japan Co., Ltd.	5,372	0.21	5,427	0.21	-0.04
none	4,680	0.18	4,852	0.19	-2.60
WoSign CA Limited	4,560	0.18	4,550	0.17	1.20
Comodo Limited	4,057	0.16	4,173	0.16	-1.83
Amazon	3,937	0.15	3,314	0.13	19.97
SECOM Trust Systems CO.,LTD.	3,673	0.14	3,745	0.14	-0.96
Corporation Service Company	3,582	0.14	3,524	0.14	2.64
ispgateway	2,975	0.12	2,984	0.11	0.68
Volusion, Inc.	2,922	0.11	3,617	0.14	-18.42
DreamHost	2,557	0.10	2,517	0.10	2.59
Equifax (Geotrust)	2,375	0.09	2,472	0.09	-2.98
SecureCore	2,355	0.09	2,263	0.09	5.09
GANDI SAS	2,258	0.09	2,530	0.10	-9.88
Government of Korea	1,877	0.07	1,910	0.07	-0.76
KDDI Web Communications Inc.	1,851	0.07	1,611	0.06	16.03
Intermediate Certificate	1,808	0.07	1,860	0.07	-1.84
National Institute of Informatics	1,776	0.07	1,778	0.07	0.87
T-Systems International GmbH	1,722	0.07	1,744	0.07	-0.29
nazwa.pl sp. z o.o.	1,567	0.06	0	0.00	N/A
Autistici/Inventati	1,536	0.06	1,536	0.06	0.98
Odin	1,324	0.05	980	0.04	36.43
U.S. Government	1,271	0.05	1,326	0.05	-3.21
SSL.com	1,197	0.05	1,193	0.05	1.32
DOMENY.PL sp. z o.o	1,133	0.04	1,142	0.04	0.19
EUNETIC GmbH	1,116	0.04	1,114	0.04	1.16
CAcert Inc.	1,084	0.04	1,221	0.05	-10.35
Comodo CA Limited	1,083	0.04	1,158	0.04	-5.56
Root CA	1,065	0.04	1,169	0.04	-8.00
Internet Widgits Pty Ltd	981	0.04	994	0.04	-0.34
TAIWAN-CA	900	0.03	855	0.03	6.30
SwissSign AG	875	0.03	871	0.03	1.45
Trend Micro Inc	863	0.03	874	0.03	-0.29
NetLock Kft.	850	0.03	853	0.03	0.63
Thawte	831	0.03	881	0.03	-4.75
Globe Hosting, Inc.	777	0.03	853	0.03	-8.02
KEYNECTIS	760	0.03	732	0.03	4.84
Rede Nacional de Ensino e Pesquisa - RNP	667	0.03	650	0.02	3.62
KPN Corporate Market BV	663	0.03	700	0.03	-4.36
Zimbra Collaboration Server	635	0.02	652	0.03	-1.65
ICP-Brasil	632	0.02	646	0.02	-1.21
Parallels, Inc.	602	0.02	642	0.02	-5.31
FNMT-RCM	591	0.02	594	0.02	0.47
nazwa.pl S.A.	573	0.02	2,124	0.08	-72.76
TBS INTERNET	557	0.02	564	0.02	-0.27
Servision Inc.	550	0.02	805	0.03	-31.01
Hostpoint GmbH	528	0.02	529	0.02	0.79
Dell Inc.	528	0.02	0	0.00	N/A
ACCV	485	0.02	484	0.02	1.19
TAIWAN-CA INC.	461	0.02	519	0.02	-10.30
SWsoft, Inc.	458	0.02	475	0.02	-2.63
Snake Oil, Ltd	434	0.02	457	0.02	-4.10
WebSupport, s.r.o.	426	0.02	429	0.02	0.28
Firstserver, Inc	420	0.02	423	0.02	0.27
Dreamcommerce S.A.	403	0.02	404	0.02	0.73
XX	372	0.01	358	0.01	4.93
CrossTrust	365	0.01	376	0.01	-1.97
Register.com	361	0.01	399	0.02	-8.64
HTTPS Management Certificate for SonicWALL (self-signed)	321	0.01	344	0.01	-5.77
Universitaet Stuttgart	307	0.01	303	0.01	2.31
Buypass AS-983163327	303	0.01	287	0.01	6.61
KAGOYA JAPAN Inc.	297	0.01	355	0.01	-15.52
Yandex LLC	288	0.01	287	0.01	1.33
DOMENY.PL Ltd.	279	0.01	299	0.01	-5.77
Agencia Catalana de Certificacio (NIF Q-0801176-I)	274	0.01	301	0.01	-8.08
Trusted Secure Certificate Authority	271	0.01	335	0.01	-18.31
OCC	271	0.01	288	0.01	-4.98
Apache HTTP Server	259	0.01	0	0.00	N/A
Pavel&Pavel	258	0.01	258	0.01	0.98
Cybertrust Inc	257	0.01	296	0.01	-12.32
Site Blindado S.A.	256	0.01	0	0.00	N/A
Default Company Ltd	256	0.01	255	0.01	1.38
MyCompany	254	0.01	313	0.01	-18.05

Note: Readers are cautioned that the Growth percentages are based on a CA's market share penetration rather than the absolute number of certificates we detected. Thus, it is possible for the number of certificates to increase, while the growth is actually a negative value.