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	March 2018 Count	March 2018 %	February 2018 Count	February 2018 %	Growth %
GoDaddy.com, Inc.	794,249	19.09	805,222	19.18	-0.51
COMODO CA Limited	711,471	17.10	713,405	17.00	0.60
DigiCert	659,884	15.86	598,681	14.26	11.18
GlobalSign nv-sa	320,623	7.70	321,685	7.66	0.54
Let's Encrypt	301,299	7.24	294,324	7.01	3.26
GeoTrust Inc.	284,041	6.83	350,398	8.35	-18.23
Gandi	100,785	2.42	100,880	2.40	0.77
cPanel, Inc.	82,660	1.99	79,109	1.88	5.40
Unknown	76,679	1.84	76,978	1.83	0.48
Amazon	66,552	1.60	65,715	1.57	2.15
Symantec Corporation	63,352	1.52	80,327	1.91	-20.45
Starfield Technologies, Inc.	57,896	1.39	58,255	1.39	0.25
thawte, Inc.	52,783	1.27	63,301	1.51	-15.89
Microsoft Corporation	43,624	1.05	43,481	1.04	1.20
Google Trust Services	42,095	1.01	5,337	0.13	695.59
Internet2	30,012	0.72	30,468	0.73	-0.64
TERENA	27,972	0.67	28,211	0.67	0.01
Entrust, Inc.	23,833	0.57	24,565	0.59	-2.14
Parallels	20,106	0.48	20,399	0.49	-0.58
Unizeto Technologies S.A.	19,215	0.46	19,390	0.46	-0.04
Trustwave Holdings, Inc.	18,158	0.44	18,882	0.45	-3.00
none	17,870	0.43	17,847	0.43	1.00
SomeOrganization	17,721	0.43	17,622	0.42	1.44
ispgateway	17,623	0.42	17,564	0.42	1.21
Network Solutions L.L.C.	16,121	0.39	17,879	0.43	-9.05
Apache HTTP Server	14,324	0.34	14,313	0.34	0.95
SecureCore	14,154	0.34	12,516	0.30	14.07
Odin	11,024	0.26	11,033	0.26	0.79
home.pl S.A.	10,643	0.26	8,743	0.21	22.79
Plesk	10,482	0.25	9,899	0.24	6.81
QuoVadis Limited	10,327	0.25	10,360	0.25	0.55
NN.RU	8,883	0.21	8,883	0.21	0.87
Cybertrust Japan Co., Ltd.	8,816	0.21	8,755	0.21	1.57
SSL.com	7,930	0.19	7,905	0.19	1.19
StartCom Ltd.	6,878	0.17	7,192	0.17	-3.53
Hostpoint AG	6,738	0.16	6,709	0.16	1.31
Internet Widgits Pty Ltd	6,683	0.16	6,531	0.16	3.22
GeoTrust, Inc.	5,608	0.13	6,135	0.15	-7.80
io.ua	4,817	0.12	4,810	0.11	1.02
HydrantID (Avalanche Cloud Corporation)	4,507	0.11	4,471	0.11	1.68
nazwa.pl sp. z o.o.	4,326	0.10	4,526	0.11	-3.59
CloudFlare, Inc.	3,758	0.09	3,759	0.09	0.84
Trust Provider B.V.	3,682	0.09	3,155	0.08	17.72
Corporation Service Company	3,665	0.09	3,618	0.09	2.18
SECOM Trust Systems CO.,LTD.	3,257	0.08	3,310	0.08	-0.75
Actalis S.p.A./03358520967	3,246	0.08	3,222	0.08	1.62
Pizza-Taxi.de GmbH / CA	3,232	0.08	3,230	0.08	0.93
Comodo Limited	3,149	0.08	3,155	0.08	0.68
KDDI Web Communications Inc.	3,140	0.08	3,138	0.07	0.93
TrustAsia Technologies, Inc.	2,865	0.07	3,066	0.07	-5.74
WebSupport, s.r.o.	2,804	0.07	2,767	0.07	2.22
The Trustico Group Ltd	2,502	0.06	0	0.00	N/A
Hosting Ukraine LLC	2,352	0.06	2,283	0.05	3.92
National Institute of Informatics	2,305	0.06	2,308	0.05	0.74
Default Company Ltd	2,202	0.05	2,091	0.05	6.22
Webhosting	2,096	0.05	2,021	0.05	4.61
Nijimo, Inc.	2,086	0.05	1,893	0.05	11.15
Google Inc	2,058	0.05	38,271	0.91	-94.58
Government of Korea	1,988	0.05	2,116	0.05	-5.23
Japan Registry Services Co., Ltd.	1,842	0.04	1,689	0.04	10.01
WoSign CA Limited	1,770	0.04	1,886	0.04	-5.33
DOMENY.PL sp. z o.o	1,730	0.04	1,927	0.05	-9.44
TAIWAN-CA	1,680	0.04	1,770	0.04	-4.26
T-Systems International GmbH	1,638	0.04	1,657	0.04	-0.29
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	1,590	0.04	1,576	0.04	1.77
Rede Nacional de Ensino e Pesquisa - RNP	1,496	0.04	1,504	0.04	0.33
Thawte, Inc.	1,392	0.03	1,664	0.04	-15.62
SwissSign AG	1,387	0.03	1,400	0.03	-0.07
Globe Hosting, Inc.	1,358	0.03	766	0.02	78.83
Verisign	1,340	0.03	1,664	0.04	-18.77
KEYNECTIS	1,266	0.03	1,248	0.03	2.32
Test Self SSL Company	1,231	0.03	1,206	0.03	2.96
NetLock Kft.	1,221	0.03	1,240	0.03	-0.68
EUNETIC GmbH	1,215	0.03	1,227	0.03	-0.12
UIC	1,177	0.03	1,177	0.03	0.87
WEDOS Internet, a.s.	1,167	0.03	1,166	0.03	0.96
AC Camerfirma S.A.	1,134	0.03	1,177	0.03	-2.82
Dreamcommerce S.A.	1,126	0.03	1,074	0.03	5.75
SH	1,029	0.02	937	0.02	10.77
Equifax (Geotrust)	966	0.02	1,127	0.03	-13.54
U.S. Government	952	0.02	1,023	0.02	-6.13
DreamHost	941	0.02	1,319	0.03	-28.04
XX	893	0.02	886	0.02	1.67
AffirmTrust	881	0.02	828	0.02	7.33
AlphaSSL	821	0.02	1,080	0.03	-23.32
Buypass AS-983163327	786	0.02	764	0.02	3.77
Mirohost	705	0.02	0	0.00	N/A
KAGOYA-JAPAN	676	0.02	562	0.01	21.33
www.sprinthost.ru	651	0.02	634	0.02	3.57
TBS INTERNET	637	0.02	666	0.02	-3.52
CAcert Inc.	614	0.01	627	0.01	-1.22
Beijing Knownsec Information Technology Co., Ltd	551	0.01	561	0.01	-0.93
Zimbra Collaboration Server	530	0.01	552	0.01	-3.15
CertCenter AG	527	0.01	484	0.01	9.83
PCextreme BV	505	0.01	497	0.01	2.49
FNMT-RCM	461	0.01	487	0.01	-4.52
OVH	457	0.01	461	0.01	-0.01
Comvive Servidores SL	456	0.01	449	0.01	2.44
Root CA	449	0.01	478	0.01	-5.25
ONEsolution s.r.o.	446	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.