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 doesn't verify the signatures of the certificates it finds, it only uses the issuer Organization Name to uniquely identify the issuing CA.

CA	November 2015 Count	November 2015 %	October 2015 Count	October 2015 %	Growth %
GoDaddy.com, Inc.	524,011	21.09	507,342	20.99	0.47
COMODO CA Limited	382,003	15.38	358,360	14.83	3.69
GeoTrust Inc.	373,727	15.04	356,226	14.74	2.05
DigiCert	263,732	10.62	250,448	10.36	2.43
GlobalSign nv-sa	129,878	5.23	128,503	5.32	-1.69
Gandi	77,289	3.11	75,551	3.13	-0.49
Symantec Corporation	71,551	2.88	67,037	2.77	3.82
GeoTrust, Inc.	63,057	2.54	75,661	3.13	-18.93
thawte, Inc.	59,923	2.41	55,673	2.30	4.70
Starfield Technologies, Inc.	40,607	1.63	39,638	1.64	-0.35
Unknown	33,083	1.33	31,108	1.29	3.45
StartCom Ltd.	32,067	1.29	32,344	1.34	-3.56
Unizeto Technologies S.A.	30,569	1.23	30,076	1.24	-1.13
Verisign	29,466	1.19	33,627	1.39	-14.76
Microsoft Corporation	28,248	1.14	27,743	1.15	-0.96
Internet2	25,476	1.03	24,735	1.02	0.19
Verizon Enterprise Solutions	24,360	0.98	23,680	0.98	0.07
Entrust, Inc.	24,014	0.97	23,653	0.98	-1.24
Network Solutions L.L.C.	23,456	0.94	23,620	0.98	-3.40
TERENA	22,663	0.91	22,476	0.93	-1.92
Thawte, Inc.	21,673	0.87	26,130	1.08	-19.32
Parallels	17,147	0.69	16,808	0.70	-0.77
Trustwave Holdings, Inc.	12,457	0.50	12,243	0.51	-1.03
SomeOrganization	10,704	0.43	9,179	0.38	13.43
Google Inc	8,901	0.36	8,628	0.36	0.35
AlphaSSL	7,973	0.32	8,403	0.35	-7.71
QuoVadis Limited	5,353	0.22	4,725	0.20	10.20
Cybertrust Japan Co., Ltd.	5,286	0.21	5,196	0.22	-1.04
Volusion, Inc.	5,116	0.21	5,671	0.23	-12.25
none	4,212	0.17	4,047	0.17	1.24
Comodo Limited	4,174	0.17	4,192	0.17	-3.15
WoSign CA Limited	3,923	0.16	3,730	0.15	2.31
SECOM Trust Systems CO.,LTD.	3,758	0.15	3,760	0.16	-2.78
GANDI SAS	3,545	0.14	3,707	0.15	-6.98
Corporation Service Company	3,208	0.13	3,057	0.13	2.08
ispgateway	2,826	0.11	2,772	0.11	-0.83
Equifax (Geotrust)	2,768	0.11	2,935	0.12	-8.26
DreamHost	2,122	0.09	1,958	0.08	5.42
nazwa.pl S.A.	2,012	0.08	1,997	0.08	-2.00
Government of Korea	1,891	0.08	1,817	0.08	1.23
National Institute of Informatics	1,692	0.07	1,655	0.07	-0.55
Servision Inc.	1,672	0.07	2,387	0.10	-31.86
Intermediate Certificate	1,639	0.07	1,472	0.06	8.31
T-Systems International GmbH	1,582	0.06	1,566	0.06	-1.73
Autistici/Inventati	1,480	0.06	1,465	0.06	-1.73
Root CA	1,426	0.06	1,446	0.06	-4.07
U.S. Government	1,384	0.06	1,366	0.06	-1.45
CAcert Inc.	1,383	0.06	1,419	0.06	-5.20
Comodo CA Limited	1,293	0.05	1,442	0.06	-12.78
EUNETIC GmbH	1,164	0.05	1,142	0.05	-0.85
SSL.com	1,075	0.04	1,017	0.04	2.82
KDDI Web Communications Inc.	1,028	0.04	851	0.04	17.50
Globe Hosting, Inc.	1,025	0.04	2,441	0.10	-59.15
DOMENY.PL sp. z o.o	978	0.04	860	0.04	10.62
Thawte	960	0.04	1,008	0.04	-7.36
Internet Widgits Pty Ltd	954	0.04	923	0.04	0.54
SwissSign AG	840	0.03	817	0.03	0.01
NetLock Kft.	825	0.03	794	0.03	1.07
Trend Micro Inc	809	0.03	778	0.03	1.15
TAIWAN-CA INC.	732	0.03	810	0.03	-12.09
KEYNECTIS	691	0.03	702	0.03	-4.25
Parallels, Inc.	681	0.03	671	0.03	-1.28
KPN Corporate Market BV	680	0.03	678	0.03	-2.44
ICP-Brasil	624	0.03	634	0.03	-4.26
Zimbra Collaboration Server	623	0.03	598	0.02	1.34
TAIWAN-CA	599	0.02	498	0.02	17.00
SecureCore	559	0.02	492	0.02	10.52
Trusted Secure Certificate Authority	553	0.02	646	0.03	-16.73
Rede Nacional de Ensino e Pesquisa - RNP	551	0.02	503	0.02	6.55
FNMT-RCM	543	0.02	514	0.02	2.76
SWsoft, Inc.	533	0.02	538	0.02	-3.63
TBS INTERNET	528	0.02	522	0.02	-1.61
Let's Encrypt	503	0.02	0	0.00	N/A
HTTPS Management Certificate for SonicWALL (self-signed)	499	0.02	482	0.02	0.70
Snake Oil, Ltd	478	0.02	484	0.02	-3.93
Register.com	475	0.02	519	0.02	-10.97
ACCV	472	0.02	464	0.02	-1.05
Cybertrust Inc	444	0.02	517	0.02	-16.46
KAGOYA JAPAN Inc.	440	0.02	475	0.02	-9.90
Firstserver, Inc	436	0.02	445	0.02	-4.70
AusCERT	393	0.02	510	0.02	-25.04
GAD EG	389	0.02	383	0.02	-1.20
SGssl	388	0.02	404	0.02	-6.58
CrossTrust	385	0.02	401	0.02	-6.61
WebSupport, s.r.o.	380	0.02	351	0.01	5.31
GeoTrust Inc	375	0.02	483	0.02	-24.48
XX	374	0.02	363	0.02	0.22
DOMENY.PL Ltd.	364	0.01	418	0.02	-15.29
TurnKey Linux	356	0.01	349	0.01	-0.78
Dreamcommerce S.A.	355	0.01	340	0.01	1.56
Agencia Catalana de Certificacio (NIF Q-0801176-I)	352	0.01	372	0.02	-7.96
GlobalSign	346	0.01	378	0.02	-10.96
JSC Regional Network Information Center	328	0.01	357	0.01	-10.63
Dell Inc.	316	0.01	0	0.00	N/A
OCC	297	0.01	297	0.01	-2.73
Universitaet Stuttgart	291	0.01	282	0.01	0.38
MyCompany	289	0.01	272	0.01	3.35
Pavel&Pavel	258	0.01	258	0.01	-2.73
SecureTrust Corporation	252	0.01	276	0.01	-11.19
AC Camerfirma SA	251	0.01	257	0.01	-5.00

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.