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	December 2015 Count	December 2015 %	November 2015 Count	November 2015 %	Growth %
GoDaddy.com, Inc.	536,600	21.17	524,011	21.09	0.39
COMODO CA Limited	394,082	15.55	382,003	15.38	1.13
GeoTrust Inc.	385,841	15.23	373,727	15.04	1.21
DigiCert	273,512	10.79	263,732	10.62	1.67
GlobalSign nv-sa	135,588	5.35	129,878	5.23	2.34
Gandi	78,673	3.10	77,289	3.11	-0.21
Symantec Corporation	76,399	3.01	71,551	2.88	4.68
thawte, Inc.	63,157	2.49	59,923	2.41	3.33
GeoTrust, Inc.	55,364	2.18	63,057	2.54	-13.93
Starfield Technologies, Inc.	41,730	1.65	40,607	1.63	0.75
StartCom Ltd.	32,093	1.27	32,067	1.29	-1.89
Unknown	31,788	1.25	33,083	1.33	-5.80
Unizeto Technologies S.A.	30,749	1.21	30,569	1.23	-1.39
Microsoft Corporation	28,835	1.14	28,248	1.14	0.07
Internet2	25,944	1.02	25,476	1.03	-0.16
Verizon Enterprise Solutions	24,713	0.98	24,360	0.98	-0.54
Entrust, Inc.	24,289	0.96	24,014	0.97	-0.84
Network Solutions L.L.C.	23,492	0.93	23,456	0.94	-1.82
TERENA	22,914	0.90	22,663	0.91	-0.88
Verisign	22,423	0.88	29,466	1.19	-25.40
Thawte, Inc.	18,485	0.73	21,673	0.87	-16.39
Parallels	17,333	0.68	17,147	0.69	-0.90
Trustwave Holdings, Inc.	12,575	0.50	12,457	0.50	-1.04
SomeOrganization	10,820	0.43	10,704	0.43	-0.90
Google Inc	9,271	0.37	8,901	0.36	2.11
AlphaSSL	7,487	0.30	7,973	0.32	-7.94
QuoVadis Limited	5,700	0.22	5,353	0.22	4.39
Cybertrust Japan Co., Ltd.	5,309	0.21	5,286	0.21	-1.54
Volusion, Inc.	4,615	0.18	5,116	0.21	-11.57
none	4,444	0.18	4,212	0.17	3.43
Comodo Limited	4,142	0.16	4,174	0.17	-2.72
WoSign CA Limited	4,135	0.16	3,923	0.16	3.33
SECOM Trust Systems CO.,LTD.	3,772	0.15	3,758	0.15	-1.60
GANDI SAS	3,366	0.13	3,545	0.14	-6.92
Corporation Service Company	3,352	0.13	3,208	0.13	2.43
ispgateway	2,865	0.11	2,826	0.11	-0.61
Equifax (Geotrust)	2,632	0.10	2,768	0.11	-6.78
Let's Encrypt	2,510	0.10	503	0.02	389.20
DreamHost	2,269	0.09	2,122	0.09	4.83
nazwa.pl S.A.	2,007	0.08	2,012	0.08	-2.21
SecureCore	1,928	0.08	559	0.02	238.12
Government of Korea	1,906	0.08	1,891	0.08	-1.19
National Institute of Informatics	1,741	0.07	1,692	0.07	0.87
Intermediate Certificate	1,718	0.07	1,639	0.07	2.76
T-Systems International GmbH	1,589	0.06	1,582	0.06	-1.53
Autistici/Inventati	1,501	0.06	1,480	0.06	-0.57
U.S. Government	1,375	0.05	1,384	0.06	-2.60
CAcert Inc.	1,313	0.05	1,383	0.06	-6.93
Root CA	1,309	0.05	1,426	0.06	-10.01
Comodo CA Limited	1,285	0.05	1,293	0.05	-2.57
KDDI Web Communications Inc.	1,237	0.05	1,028	0.04	17.97
EUNETIC GmbH	1,148	0.05	1,164	0.05	-3.31
Servision Inc.	1,145	0.05	1,672	0.07	-32.87
SSL.com	1,127	0.04	1,075	0.04	2.78
DOMENY.PL sp. z o.o	1,039	0.04	978	0.04	4.15
Internet Widgits Pty Ltd	964	0.04	954	0.04	-0.94
Globe Hosting, Inc.	949	0.04	1,025	0.04	-9.23
Thawte	924	0.04	960	0.04	-5.64
SwissSign AG	861	0.03	840	0.03	0.49
NetLock Kft.	838	0.03	825	0.03	-0.42
Trend Micro Inc	816	0.03	809	0.03	-1.12
TAIWAN-CA	731	0.03	599	0.02	19.64
KEYNECTIS	720	0.03	691	0.03	2.15
KPN Corporate Market BV	694	0.03	680	0.03	0.05
Parallels, Inc.	685	0.03	681	0.03	-1.39
ICP-Brasil	638	0.03	624	0.03	0.23
Zimbra Collaboration Server	632	0.02	623	0.03	-0.55
TAIWAN-CA INC.	609	0.02	732	0.03	-18.44
Rede Nacional de Ensino e Pesquisa - RNP	591	0.02	551	0.02	5.15
FNMT-RCM	562	0.02	543	0.02	1.46
TBS INTERNET	546	0.02	528	0.02	1.38
SWsoft, Inc.	512	0.02	533	0.02	-5.83
Trusted Secure Certificate Authority	486	0.02	553	0.02	-13.84
ACCV	476	0.02	472	0.02	-1.13
Snake Oil, Ltd	473	0.02	478	0.02	-2.99
HTTPS Management Certificate for SonicWALL (self-signed)	473	0.02	499	0.02	-7.07
Odin	470	0.02	0	0.00	N/A
Dell Inc.	451	0.02	316	0.01	39.92
Register.com	449	0.02	475	0.02	-7.33
Firstserver, Inc	431	0.02	436	0.02	-3.09
Cybertrust Inc	417	0.02	444	0.02	-7.93
KAGOYA JAPAN Inc.	413	0.02	440	0.02	-7.98
WebSupport, s.r.o.	395	0.02	380	0.02	1.90
GAD EG	391	0.02	389	0.02	-1.46
CrossTrust	388	0.02	385	0.02	-1.20
Dreamcommerce S.A.	371	0.01	355	0.01	2.45
XX	369	0.01	374	0.02	-3.28
TurnKey Linux	352	0.01	356	0.01	-3.07
Agencia Catalana de Certificacio (NIF Q-0801176-I)	342	0.01	352	0.01	-4.75
DOMENY.PL Ltd.	336	0.01	364	0.01	-9.51
GlobalSign	316	0.01	346	0.01	-10.47
SGssl	312	0.01	388	0.02	-21.17
AusCERT	300	0.01	393	0.02	-25.16
Universitaet Stuttgart	299	0.01	291	0.01	0.73
MyCompany	298	0.01	289	0.01	1.09
Hostpoint GmbH	297	0.01	0	0.00	N/A
GeoTrust Inc	297	0.01	375	0.02	-22.36
JSC Regional Network Information Center	292	0.01	328	0.01	-12.73
OCC	291	0.01	297	0.01	-3.95
Buypass AS-983163327	268	0.01	0	0.00	N/A

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.