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 2016 Count	December 2016 %	November 2016 Count	November 2016 %	Growth %
GoDaddy.com, Inc.	622,913	19.78	604,252	19.92	-0.68
DigiCert	505,142	16.04	337,379	11.12	44.25
COMODO CA Limited	487,962	15.50	472,256	15.57	-0.45
GeoTrust Inc.	401,242	12.74	393,155	12.96	-1.68
GlobalSign nv-sa	220,956	7.02	214,894	7.08	-0.94
Symantec Corporation	123,214	3.91	251,119	8.28	-52.73
Gandi	90,805	2.88	89,599	2.95	-2.36
thawte, Inc.	72,509	2.30	71,341	2.35	-2.08
Let's Encrypt	66,531	2.11	53,819	1.77	19.10
Starfield Technologies, Inc.	42,649	1.35	42,174	1.39	-2.57
StartCom Ltd.	34,197	1.09	33,017	1.09	-0.21
Unizeto Technologies S.A.	33,811	1.07	33,353	1.10	-2.33
Microsoft Corporation	33,213	1.05	32,434	1.07	-1.34
Unknown	29,094	0.92	28,668	0.94	-2.23
Internet2	28,262	0.90	28,014	0.92	-2.80
Entrust, Inc.	25,773	0.82	25,410	0.84	-2.28
TERENA	23,838	0.76	23,431	0.77	-1.98
Network Solutions L.L.C.	21,361	0.68	21,285	0.70	-3.31
Amazon	17,646	0.56	19,772	0.65	-14.02
Parallels	17,362	0.55	17,137	0.56	-2.39
GeoTrust, Inc.	15,980	0.51	17,505	0.58	-12.05
Google Inc	15,266	0.48	13,664	0.45	7.64
cPanel, Inc.	14,552	0.46	11,119	0.37	26.09
Trustwave Holdings, Inc.	12,603	0.40	12,668	0.42	-4.15
SomeOrganization	11,227	0.36	10,776	0.36	0.38
QuoVadis Limited	8,277	0.26	8,074	0.27	-1.23
none	7,275	0.23	6,746	0.22	3.90
Cybertrust Japan Co., Ltd.	6,219	0.20	6,038	0.20	-0.77
WoSign CA Limited	5,610	0.18	5,499	0.18	-1.71
Verizon Enterprise Solutions	5,265	0.17	5,545	0.18	-8.52
DreamHost	4,859	0.15	4,396	0.14	6.49
Odin	4,833	0.15	4,239	0.14	9.84
Verisign	4,503	0.14	5,465	0.18	-20.62
Thawte, Inc.	4,126	0.13	4,626	0.15	-14.07
Comodo Limited	4,125	0.13	4,070	0.13	-2.35
SECOM Trust Systems CO.,LTD.	3,545	0.11	3,538	0.12	-3.47
SecureCore	3,509	0.11	3,133	0.10	7.91
ispgateway	3,240	0.10	3,196	0.11	-2.33
Corporation Service Company	2,891	0.09	2,828	0.09	-1.51
Internet Widgits Pty Ltd	2,692	0.09	2,347	0.08	10.51
nazwa.pl sp. z o.o.	2,667	0.08	2,504	0.08	2.61
KDDI Web Communications Inc.	2,445	0.08	2,384	0.08	-1.19
AlphaSSL	2,286	0.07	2,969	0.10	-25.82
Hostpoint GmbH	2,119	0.07	1,799	0.06	13.48
CloudFlare, Inc.	2,081	0.07	0	0.00	N/A
home.pl S.A.	2,014	0.06	1,720	0.06	12.81
National Institute of Informatics	1,991	0.06	1,952	0.06	-1.73
Government of Korea	1,922	0.06	1,916	0.06	-3.36
Equifax (Geotrust)	1,790	0.06	1,826	0.06	-5.56
T-Systems International GmbH	1,723	0.05	1,714	0.06	-3.15
SSL.com	1,677	0.05	1,564	0.05	3.30
Volusion, Inc.	1,585	0.05	1,656	0.05	-7.79
Trust Provider B.V.	1,576	0.05	1,362	0.04	11.48
TAIWAN-CA	1,352	0.04	1,196	0.04	8.91
DOMENY.PL sp. z o.o	1,309	0.04	1,230	0.04	2.53
EUNETIC GmbH	1,212	0.04	1,192	0.04	-2.04
U.S. Government	1,161	0.04	1,187	0.04	-5.77
UIC	1,156	0.04	1,154	0.04	-3.49
Pizza-Taxi.de GmbH / CA	1,082	0.03	881	0.03	18.32
Rede Nacional de Ensino e Pesquisa - RNP	1,023	0.03	967	0.03	1.92
SwissSign AG	1,000	0.03	962	0.03	0.15
KEYNECTIS	998	0.03	926	0.03	3.83
Trend Micro Inc	966	0.03	939	0.03	-0.89
NetLock Kft.	959	0.03	941	0.03	-1.81
Intermediate Certificate	928	0.03	1,025	0.03	-12.77
CAcert Inc.	851	0.03	842	0.03	-2.63
WebSupport, s.r.o.	728	0.02	666	0.02	5.31
Root CA	726	0.02	760	0.03	-7.97
Comodo CA Limited	693	0.02	736	0.02	-9.29
Dreamcommerce S.A.	631	0.02	593	0.02	2.52
Zimbra Collaboration Server	625	0.02	617	0.02	-2.41
Actalis S.p.A./03358520967	608	0.02	580	0.02	0.99
FNMT-RCM	607	0.02	603	0.02	-3.02
TBS INTERNET	593	0.02	585	0.02	-2.34
Thawte	591	0.02	604	0.02	-5.73
Globe Hosting, Inc.	578	0.02	600	0.02	-7.19
ICP-Brasil	538	0.02	558	0.02	-7.11
KPN Corporate Market BV	534	0.02	544	0.02	-5.43
AC Camerfirma S.A.	513	0.02	501	0.02	-1.35
GANDI SAS	512	0.02	633	0.02	-22.07
ACCV	499	0.02	495	0.02	-2.88
Parallels, Inc.	483	0.02	477	0.02	-2.44
SWsoft, Inc.	469	0.01	456	0.02	-0.91
Buypass AS-983163327	451	0.01	436	0.01	-0.34
Plesk	402	0.01	0	0.00	N/A
XX	401	0.01	355	0.01	8.83
Default Company Ltd	390	0.01	342	0.01	9.86
Hosting Ukraine LLC	377	0.01	307	0.01	18.31
FIDUCIA & GAD IT AG	373	0.01	370	0.01	-2.88
Japan Registry Services Co., Ltd.	369	0.01	280	0.01	26.97
Firstserver, Inc	367	0.01	366	0.01	-3.39
Snake Oil, Ltd	348	0.01	349	0.01	-3.93
Universitaet Stuttgart	344	0.01	334	0.01	-0.77
CrossTrust	337	0.01	348	0.01	-6.70
WEDOS Internet, a.s.	336	0.01	282	0.01	14.79
Dell Inc.	336	0.01	328	0.01	-1.31
Yandex LLC	319	0.01	311	0.01	-1.18
Apache HTTP Server	304	0.01	301	0.01	-2.70
Test Self SSL Company	278	0.01	0	0.00	N/A
Karlsruhe Institute of Technology	273	0.01	260	0.01	1.16

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.