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	October 2016 Count	October 2016 %	September 2016 Count	September 2016 %	Growth %
GoDaddy.com, Inc.	599,702	20.08	595,412	20.17	-0.44
COMODO CA Limited	468,358	15.68	479,874	16.25	-3.52
GeoTrust Inc.	390,512	13.07	390,884	13.24	-1.24
DigiCert	331,838	11.11	328,218	11.12	-0.06
Symantec Corporation	232,471	7.78	189,700	6.42	21.14
GlobalSign nv-sa	210,564	7.05	208,582	7.06	-0.21
Gandi	88,983	2.98	88,458	3.00	-0.56
thawte, Inc.	71,775	2.40	71,330	2.42	-0.53
Let's Encrypt	46,204	1.55	39,420	1.34	15.86
Starfield Technologies, Inc.	41,826	1.40	41,960	1.42	-1.47
StartCom Ltd.	33,164	1.11	33,036	1.12	-0.77
Unizeto Technologies S.A.	33,121	1.11	32,796	1.11	-0.17
Microsoft Corporation	32,033	1.07	33,044	1.12	-4.17
Unknown	28,703	0.96	28,765	0.97	-1.36
Internet2	27,924	0.93	27,857	0.94	-0.91
Entrust, Inc.	25,246	0.85	25,377	0.86	-1.66
TERENA	23,291	0.78	23,275	0.79	-1.08
Network Solutions L.L.C.	21,473	0.72	21,841	0.74	-2.82
GeoTrust, Inc.	19,142	0.64	21,819	0.74	-13.28
Parallels	17,200	0.58	17,487	0.59	-2.77
Amazon	16,683	0.56	13,292	0.45	24.07
Google Inc	13,024	0.44	12,504	0.42	2.96
Trustwave Holdings, Inc.	12,498	0.42	12,554	0.43	-1.59
SomeOrganization	11,673	0.39	12,045	0.41	-4.20
Verizon Enterprise Solutions	11,345	0.38	23,070	0.78	-51.39
cPanel, Inc.	8,015	0.27	6,924	0.23	14.43
QuoVadis Limited	7,986	0.27	7,860	0.27	0.43
Verisign	6,936	0.23	8,302	0.28	-17.41
none	6,575	0.22	6,386	0.22	1.78
Cybertrust Japan Co., Ltd.	5,943	0.20	5,886	0.20	-0.19
WoSign CA Limited	5,827	0.20	5,896	0.20	-2.31
Thawte, Inc.	5,199	0.17	6,218	0.21	-17.35
DreamHost	4,171	0.14	3,993	0.14	3.26
Comodo Limited	4,055	0.14	4,063	0.14	-1.35
Odin	3,841	0.13	3,386	0.11	12.13
SECOM Trust Systems CO.,LTD.	3,591	0.12	3,632	0.12	-2.27
AlphaSSL	3,199	0.11	4,398	0.15	-28.10
ispgateway	3,185	0.11	3,144	0.11	0.14
SecureCore	3,042	0.10	2,866	0.10	4.92
Corporation Service Company	2,832	0.09	2,857	0.10	-2.02
nazwa.pl sp. z o.o.	2,425	0.08	2,324	0.08	3.15
KDDI Web Communications Inc.	2,362	0.08	2,301	0.08	1.47
Internet Widgits Pty Ltd	2,095	0.07	2,030	0.07	2.01
National Institute of Informatics	1,940	0.06	1,929	0.07	-0.59
Government of Korea	1,913	0.06	1,936	0.07	-2.32
Equifax (Geotrust)	1,875	0.06	1,971	0.07	-5.96
Volusion, Inc.	1,797	0.06	1,945	0.07	-8.67
T-Systems International GmbH	1,745	0.06	1,755	0.06	-1.71
Hostpoint GmbH	1,656	0.06	1,501	0.05	9.06
SSL.com	1,500	0.05	1,478	0.05	0.32
home.pl S.A.	1,415	0.05	1,030	0.03	35.80
Trust Provider B.V.	1,246	0.04	1,082	0.04	13.83
U.S. Government	1,213	0.04	1,231	0.04	-2.60
Intermediate Certificate	1,200	0.04	1,234	0.04	-3.87
EUNETIC GmbH	1,186	0.04	1,192	0.04	-1.65
DOMENY.PL sp. z o.o	1,180	0.04	1,196	0.04	-2.47
TAIWAN-CA	1,178	0.04	1,135	0.04	2.59
Rede Nacional de Ensino e Pesquisa - RNP	951	0.03	909	0.03	3.42
Trend Micro Inc	931	0.03	928	0.03	-0.83
NetLock Kft.	914	0.03	907	0.03	-0.39
SwissSign AG	910	0.03	907	0.03	-0.82
KEYNECTIS	884	0.03	864	0.03	1.14
CAcert Inc.	866	0.03	890	0.03	-3.82
Root CA	808	0.03	875	0.03	-8.72
Comodo CA Limited	807	0.03	856	0.03	-6.81
GANDI SAS	773	0.03	977	0.03	-21.79
Pizza-Taxi.de GmbH / CA	755	0.03	660	0.02	13.08
WebSupport, s.r.o.	640	0.02	605	0.02	4.57
Globe Hosting, Inc.	625	0.02	681	0.02	-9.28
Thawte	624	0.02	647	0.02	-4.66
Zimbra Collaboration Server	619	0.02	625	0.02	-2.10
FNMT-RCM	607	0.02	617	0.02	-2.75
TBS INTERNET	597	0.02	600	0.02	-1.64
Dreamcommerce S.A.	570	0.02	555	0.02	1.52
Actalis S.p.A./03358520967	566	0.02	549	0.02	1.91
KPN Corporate Market BV	560	0.02	581	0.02	-4.72
ICP-Brasil	556	0.02	571	0.02	-3.75
Parallels, Inc.	499	0.02	511	0.02	-3.47
ACCV	498	0.02	489	0.02	0.67
SWsoft, Inc.	464	0.02	462	0.02	-0.72
Buypass AS-983163327	420	0.01	403	0.01	3.02
XX	382	0.01	400	0.01	-5.60
Firstserver, Inc	369	0.01	376	0.01	-2.99
FIDUCIA & GAD IT AG	365	0.01	360	0.01	0.22
Snake Oil, Ltd	358	0.01	372	0.01	-4.87
AC Camerfirma S.A.	354	0.01	317	0.01	10.39
CrossTrust	352	0.01	350	0.01	-0.59
Universitaet Stuttgart	332	0.01	328	0.01	0.06
Default Company Ltd	330	0.01	311	0.01	4.89
Yandex LLC	302	0.01	294	0.01	1.54
Apache HTTP Server	297	0.01	294	0.01	-0.14
Hosting Ukraine LLC	279	0.01	257	0.01	7.31
TAIWAN-CA INC.	276	0.01	301	0.01	-9.36
Dell Inc.	276	0.01	276	0.01	-1.15
QuoVadis Trustlink BV	270	0.01	270	0.01	-1.15
WEDOS Internet, a.s.	264	0.01	0	0.00	N/A
HydrantID (Avalanche Cloud Corporation)	263	0.01	258	0.01	0.77
Pavel&Pavel	258	0.01	258	0.01	-1.15
Karlsruhe Institute of Technology	256	0.01	257	0.01	-1.54
OVH	252	0.01	261	0.01	-4.56

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.