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 2019 Count	March 2019 %	February 2019 Count	February 2019 %	Growth %
DigiCert	148,906	23.78	708,012	16.26	46.18
COMODO CA Limited	124,460	19.87	1,240,758	28.50	-30.28
Let's Encrypt	95,700	15.28	658,574	15.13	1.00
GlobalSign nv-sa	34,900	5.57	318,098	7.31	-23.75
GoDaddy.com, Inc.	33,730	5.39	238,399	5.48	-1.66
cPanel, Inc.	27,904	4.46	135,542	3.11	43.09
Sectigo Limited	16,335	2.61	72,608	1.67	56.36
Unknown	15,690	2.51	115,283	2.65	-5.41
Amazon	15,089	2.41	95,667	2.20	9.62
Starfield Technologies, Inc.	7,479	1.19	49,836	1.14	4.30
TERENA	7,122	1.14	31,088	0.71	59.23
Internet2	5,734	0.92	32,396	0.74	23.02
GeoTrust Inc.	4,670	0.75	26,057	0.60	24.56
Plesk	4,341	0.69	24,014	0.55	25.64
none	4,035	0.64	22,321	0.51	25.64
ispgateway	3,897	0.62	25,083	0.58	7.98
Entrust, Inc.	3,885	0.62	25,308	0.58	6.69
SomeOrganization	3,530	0.56	26,059	0.60	-5.85
Parallels	3,331	0.53	19,337	0.44	19.73
Unizeto Technologies S.A.	3,240	0.52	23,991	0.55	-6.14
Gandi	2,945	0.47	20,863	0.48	-1.89
Google Trust Services	2,631	0.42	55,396	1.27	-66.99
SecureCore	2,517	0.40	14,033	0.32	24.66
Odin	2,509	0.40	14,124	0.32	23.47
home.pl S.A.	2,446	0.39	13,061	0.30	30.16
Microsoft Corporation	2,258	0.36	25,599	0.59	-38.69
Network Solutions L.L.C.	2,024	0.32	13,605	0.31	3.40
QuoVadis Limited	1,927	0.31	11,664	0.27	14.82
Trustwave Holdings, Inc.	1,905	0.30	16,208	0.37	-18.31
Gehirn Inc.	1,280	0.20	7,054	0.16	26.12
Webhosting	1,173	0.19	5,364	0.12	51.99
Actalis S.p.A./03358520967	1,108	0.18	6,820	0.16	12.92
Cybertrust Japan Co., Ltd.	1,045	0.17	11,144	0.26	-34.83
DreamHost	1,039	0.17	5,067	0.12	42.52
Corporation Service Company	981	0.16	5,402	0.12	26.22
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	927	0.15	4,900	0.11	31.49
nazwa.pl sp. z o.o.	879	0.14	5,743	0.13	6.38
Trust Provider B.V.	869	0.14	4,482	0.10	34.76
SECOM Trust Systems CO.,LTD.	823	0.13	4,741	0.11	20.65
Japan Registry Services Co., Ltd.	782	0.12	3,621	0.08	50.10
WebSupport, s.r.o.	760	0.12	4,257	0.10	24.08
HydrantID (Avalanche Cloud Corporation)	746	0.12	3,331	0.08	55.66
Rede Nacional de Ensino e Pesquisa - RNP	728	0.12	1,880	0.04	169.14
thawte, Inc.	661	0.11	4,314	0.10	6.49
Hosting Ukraine LLC	559	0.09	3,942	0.09	-1.44
GeoTrust, Inc.	543	0.09	3,334	0.08	13.20
The Trustico Group Ltd	522	0.08	4,458	0.10	-18.62
Symantec Corporation	483	0.08	2,859	0.07	17.42
National Institute of Informatics	473	0.08	2,195	0.05	49.77
Dreamcommerce S.A.	459	0.07	656	0.02	386.31
TrustAsia Technologies, Inc.	457	0.07	2,948	0.07	7.74
MyCompany	443	0.07	1,341	0.03	129.60
StartCom Ltd.	416	0.07	5,401	0.12	-46.47
SSL.com	404	0.06	2,423	0.06	15.89
XX	400	0.06	1,736	0.04	60.14
KAGOYA-JAPAN	400	0.06	1,889	0.04	47.17
Nijimo, Inc.	397	0.06	3,503	0.08	-21.23
SwissSign AG	392	0.06	1,826	0.04	49.21
KDDI Web Communications Inc.	370	0.06	2,575	0.06	-0.13
DOMENY.PL sp. z o.o	365	0.06	2,797	0.06	-9.30
Internet Widgits Pty Ltd	361	0.06	8,463	0.19	-70.35
WEDOS Internet, a.s.	352	0.06	2,173	0.05	12.59
SH	341	0.05	2,348	0.05	0.94
TAIWAN-CA	339	0.05	1,865	0.04	26.33
Government of Korea	337	0.05	1,597	0.04	46.67
T-Systems International GmbH	327	0.05	1,896	0.04	19.87
Default Company Ltd	324	0.05	2,215	0.05	1.67
Comodo Limited	305	0.05	2,015	0.05	5.20
Test Self SSL Company	297	0.05	1,811	0.04	13.98
WoSign CA Limited	284	0.05	1,445	0.03	36.60
Martin Ertl - Kompas	279	0.04	0	0.00	N/A
AC Camerfirma S.A.	277	0.04	1,411	0.03	36.44
NetLock Kft.	245	0.04	1,304	0.03	30.58
Acme Co	243	0.04	2,052	0.05	-17.69
Buypass AS-983163327	241	0.04	1,127	0.03	48.63
Globe Hosting, Inc.	240	0.04	761	0.02	119.19
AffirmTrust	224	0.04	1,243	0.03	25.25
CertCenter AG	205	0.03	989	0.02	44.07
World4You Internet Services GmbH	194	0.03	1,458	0.03	-7.52
SAS PYVER	177	0.03	0	0.00	N/A
Nethost CA	169	0.03	0	0.00	N/A
Fiducia & GAD IT AG	162	0.03	739	0.02	52.36
EUNETIC GmbH	155	0.02	1,205	0.03	-10.60
www.sprinthost.ru	150	0.02	1,351	0.03	-22.83
Mirohost	147	0.02	1,214	0.03	-15.84
Apache HTTP Server	135	0.02	14,564	0.33	-93.56
Acorn Internet Services	131	0.02	0	0.00	N/A
Thawte, Inc.	126	0.02	811	0.02	7.98
DHIMYOTIS	124	0.02	608	0.01	41.75
Darkmay s.r.o.	123	0.02	0	0.00	N/A
Verisign	122	0.02	1,083	0.02	-21.71
Chunghwa Telecom Co., Ltd.	116	0.02	0	0.00	N/A
datengang.de	111	0.02	0	0.00	N/A
Soluciones Corporativas IP, SL	110	0.02	1,100	0.03	-30.50
FNMT-RCM	107	0.02	0	0.00	N/A
U.S. Government	105	0.02	754	0.02	-3.21
Greenhost	104	0.02	0	0.00	N/A
GMO CLOUD K.K.	104	0.02	0	0.00	N/A
Skok.CZ	98	0.02	0	0.00	N/A
KEYNECTIS	96	0.02	695	0.02	-4.00

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.