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	January 2016 Count	January 2016 %	December 2015 Count	December 2015 %	Growth %
GoDaddy.com, Inc.	548,437	21.35	536,600	21.17	0.84
COMODO CA Limited	396,885	15.45	394,082	15.55	-0.64
GeoTrust Inc.	396,812	15.45	385,841	15.23	1.47
DigiCert	287,007	11.17	273,512	10.79	3.53
GlobalSign nv-sa	140,418	5.47	135,588	5.35	2.18
Gandi	79,945	3.11	78,673	3.10	0.26
Symantec Corporation	78,817	3.07	76,399	3.01	1.79
thawte, Inc.	64,919	2.53	63,157	2.49	1.42
GeoTrust, Inc.	48,340	1.88	55,364	2.18	-13.85
Starfield Technologies, Inc.	41,689	1.62	41,730	1.65	-1.43
Unknown	32,306	1.26	31,788	1.25	0.27
StartCom Ltd.	31,589	1.23	32,093	1.27	-2.89
Unizeto Technologies S.A.	30,721	1.20	30,749	1.21	-1.43
Microsoft Corporation	29,287	1.14	28,835	1.14	0.21
Internet2	26,194	1.02	25,944	1.02	-0.39
Entrust, Inc.	24,420	0.95	24,289	0.96	-0.81
Network Solutions L.L.C.	23,052	0.90	23,492	0.93	-3.19
TERENA	22,835	0.89	22,914	0.90	-1.68
Verisign	19,426	0.76	22,423	0.88	-14.52
Verizon Enterprise Solutions	19,422	0.76	24,713	0.98	-22.46
Parallels	17,346	0.68	17,333	0.68	-1.26
Thawte, Inc.	15,857	0.62	18,485	0.73	-15.36
Trustwave Holdings, Inc.	12,576	0.49	12,575	0.50	-1.33
SomeOrganization	10,925	0.43	10,820	0.43	-0.38
Google Inc	9,616	0.37	9,271	0.37	2.33
AlphaSSL	6,838	0.27	7,487	0.30	-9.89
QuoVadis Limited	5,956	0.23	5,700	0.22	3.09
Let's Encrypt	5,475	0.21	2,510	0.10	115.21
Cybertrust Japan Co., Ltd.	5,370	0.21	5,309	0.21	-0.20
none	4,684	0.18	4,444	0.18	3.99
WoSign CA Limited	4,342	0.17	4,135	0.16	3.60
Comodo Limited	4,171	0.16	4,142	0.16	-0.65
Volusion, Inc.	3,990	0.16	4,615	0.18	-14.70
SECOM Trust Systems CO.,LTD.	3,748	0.15	3,772	0.15	-1.96
Corporation Service Company	3,443	0.13	3,352	0.13	1.34
GANDI SAS	3,025	0.12	3,366	0.13	-11.33
ispgateway	2,939	0.11	2,865	0.11	1.21
Equifax (Geotrust)	2,529	0.10	2,632	0.10	-5.20
DreamHost	2,390	0.09	2,269	0.09	3.92
nazwa.pl S.A.	2,108	0.08	2,007	0.08	3.63
SecureCore	2,107	0.08	1,928	0.08	7.82
Government of Korea	1,911	0.07	1,906	0.08	-1.08
National Institute of Informatics	1,751	0.07	1,741	0.07	-0.77
Intermediate Certificate	1,716	0.07	1,718	0.07	-1.45
T-Systems International GmbH	1,628	0.06	1,589	0.06	1.08
Autistici/Inventati	1,522	0.06	1,501	0.06	0.04
KDDI Web Communications Inc.	1,451	0.06	1,237	0.05	15.73
U.S. Government	1,363	0.05	1,375	0.05	-2.20
CAcert Inc.	1,273	0.05	1,313	0.05	-4.34
Root CA	1,211	0.05	1,309	0.05	-8.72
EUNETIC GmbH	1,150	0.04	1,148	0.05	-1.17
SSL.com	1,147	0.04	1,127	0.04	0.41
Comodo CA Limited	1,124	0.04	1,285	0.05	-13.70
DOMENY.PL sp. z o.o	1,102	0.04	1,039	0.04	4.65
Internet Widgits Pty Ltd	967	0.04	964	0.04	-1.03
Servision Inc.	947	0.04	1,145	0.05	-18.40
Thawte	903	0.04	924	0.04	-3.58
Globe Hosting, Inc.	875	0.03	949	0.04	-9.03
SwissSign AG	873	0.03	861	0.03	0.04
Trend Micro Inc	850	0.03	816	0.03	2.77
NetLock Kft.	849	0.03	838	0.03	-0.04
TAIWAN-CA	822	0.03	731	0.03	10.95
Odin	765	0.03	470	0.02	60.59
KEYNECTIS	734	0.03	720	0.03	0.58
KPN Corporate Market BV	689	0.03	694	0.03	-2.05
Parallels, Inc.	661	0.03	685	0.03	-4.79
Zimbra Collaboration Server	648	0.03	632	0.02	1.16
ICP-Brasil	638	0.02	638	0.03	-1.34
Rede Nacional de Ensino e Pesquisa - RNP	611	0.02	591	0.02	2.00
FNMT-RCM	581	0.02	562	0.02	2.00
TBS INTERNET	566	0.02	546	0.02	2.28
TAIWAN-CA INC.	527	0.02	609	0.02	-14.62
Dell Inc.	492	0.02	451	0.02	7.63
SWsoft, Inc.	480	0.02	512	0.02	-7.50
ACCV	479	0.02	476	0.02	-0.72
Snake Oil, Ltd	464	0.02	473	0.02	-3.21
HTTPS Management Certificate for SonicWALL (self-signed)	436	0.02	473	0.02	-9.05
Firstserver, Inc	429	0.02	431	0.02	-1.79
WebSupport, s.r.o.	419	0.02	395	0.02	4.66
Hostpoint GmbH	418	0.02	297	0.01	38.86
Register.com	408	0.02	449	0.02	-10.35
Dreamcommerce S.A.	397	0.02	371	0.01	5.58
GAD EG	390	0.02	391	0.02	-1.59
CrossTrust	382	0.01	388	0.02	-2.86
KAGOYA JAPAN Inc.	381	0.01	413	0.02	-8.98
Trusted Secure Certificate Authority	368	0.01	486	0.02	-25.29
XX	360	0.01	369	0.01	-3.74
Agencia Catalana de Certificacio (NIF Q-0801176-I)	316	0.01	342	0.01	-8.84
Cybertrust Inc	315	0.01	417	0.02	-25.47
MyCompany	313	0.01	298	0.01	3.63
DOMENY.PL Ltd.	308	0.01	336	0.01	-9.56
Universitaet Stuttgart	299	0.01	299	0.01	-1.34
Yandex LLC	285	0.01	0	0.00	N/A
OCC	283	0.01	291	0.01	-4.05
Buypass AS-983163327	280	0.01	268	0.01	3.08
SGssl	276	0.01	312	0.01	-12.72
AusCERT	272	0.01	300	0.01	-10.55
GlobalSign	264	0.01	316	0.01	-17.57
Pavel&Pavel	258	0.01	0	0.00	N/A
Default Company Ltd	257	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.