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 2006 Count	March 2006 %	February 2006 Count	February 2006 %	Growth %
Verisign	73,881	29.25	73,317	29.73	-1.62
Equifax (Geotrust)	49,390	19.56	47,669	19.33	1.16
Thawte	38,410	15.21	38,021	15.42	-1.37
Comodo Limited	19,286	7.64	19,620	7.96	-4.03
Starfield Technologies, Inc.	6,968	2.76	6,339	2.57	7.32
Unknown	4,663	1.85	4,382	1.78	3.89
Entrust.net	4,075	1.61	3,935	1.60	1.10
AddTrust AB	3,811	1.51	2,941	1.19	26.51
SomeOrganization	3,091	1.22	3,055	1.24	-1.22
ChainedSSL	2,177	0.86	2,050	0.83	3.68
SWsoft, Inc.	2,159	0.85	2,078	0.84	1.44
Snake Oil, Ltd	2,001	0.79	1,987	0.81	-1.68
The USERTRUST Network	1,747	0.69	1,828	0.74	-6.70
XRamp Security Services Inc	1,471	0.58	1,392	0.56	3.17
U.S. Government	1,462	0.58	1,422	0.58	0.38
DigiCert Inc.	1,265	0.50	1,152	0.47	7.21
Network Solutions L.L.C.	1,108	0.44	899	0.36	20.33
TC TrustCenter for Security in Data Networks GmbH	805	0.32	772	0.31	1.80
IPS Certification Authority s.l.	767	0.30	747	0.30	0.24
GlobalSign nv-sa	657	0.26	630	0.26	1.81
Root CA	640	0.25	595	0.24	5.01
Betrusted Japan Co.,Ltd.	416	0.16	388	0.16	4.68
FreeSSL	288	0.11	308	0.12	-8.71
Positive Software Corporation	278	0.11	228	0.09	19.04
Deutsche Telekom AG	273	0.11	289	0.12	-7.77
ispgateway	256	0.10	232	0.09	7.73
Plesk, Inc.	227	0.09	240	0.10	-7.66
GTE Corporation	223	0.09	221	0.09	-1.49
Comodo Japan Inc.	181	0.07	168	0.07	5.19
Akamai	177	0.07	173	0.07	-0.11
TDC	176	0.07	168	0.07	2.28
Kubota Systems Inc.	167	0.07	162	0.07	0.64
Ipswitch,Inc.	159	0.06	188	0.08	-17.43
Apache HTTP Server	144	0.06	140	0.06	0.42
Positive Software	131	0.05	137	0.06	-6.65
Plesk Inc.	120	0.05	118	0.05	-0.71
OCC	111	0.04	103	0.04	5.21
Internet Widgits Pty Ltd	111	0.04	115	0.05	-5.77
NetLock Halozatbiztonsagi Kft.	110	0.04	109	0.04	-1.47
Firstserver, Inc.	106	0.04	92	0.04	12.49
Unizeto Sp. z o.o.	105	0.04	113	0.05	-9.28
GlobalSign Inc	91	0.04	91	0.04	-2.37
ICS_TREE	90	0.04	83	0.03	5.86
Digital Signature Trust Co.	89	0.04	88	0.04	-1.26
Thawte Certification	87	0.03	83	0.03	2.34
CRU	87	0.03	81	0.03	4.86
Trusted Secure Certificate Authority	84	0.03	70	0.03	17.16
RM	84	0.03	76	0.03	7.91
IceWarp Software	84	0.03	90	0.04	-8.88
CNRS	78	0.03	74	0.03	2.91
NTT Communications Corporation	75	0.03	65	0.03	12.65
StartCom Ltd.	74	0.03	65	0.03	11.15
ICP-Brasil	69	0.03	60	0.02	12.28
XYZ Corporation	65	0.03	61	0.02	4.03
CAcert Inc.	61	0.02	42	0.02	41.80
Japan Certification Services, Inc.	60	0.02	59	0.02	-0.71
United Network Communications Co., Ltd.	59	0.02	59	0.02	-2.37
Stunnel Developers Ltd	57	0.02	52	0.02	7.02
MULTICERT-CA	57	0.02	55	0.02	1.18
Equifax Secure Inc	57	0.02	66	0.03	-15.68
BlueHost.Com	55	0.02	46	0.02	16.73
FNMT	54	0.02	48	0.02	9.83
Your Name Webhosting	51	0.02	0	0.00	N/A
WebMoney Transfer	51	0.02	51	0.02	-2.37
Digi-Sign Limited	45	0.02	36	0.01	22.04
TAIWAN-CA.COM	44	0.02	40	0.02	7.39
My Company Ltd	44	0.02	49	0.02	-12.33
UniCERT Brasil Certificadora	43	0.02	48	0.02	-12.54
Temp Certificate!	43	0.02	38	0.02	10.48
Sun Microsystems Inc	43	0.02	58	0.02	-27.62
University of Maryland	41	0.02	37	0.02	8.19
DFN-CERT Services GmbH	41	0.02	39	0.02	2.64
SCNC	40	0.02	40	0.02	-2.37
S1 Corporation	40	0.02	40	0.02	-2.37
T-Systems Enterprise Services GmbH	39	0.02	0	0.00	N/A
Hostgator	39	0.02	44	0.02	-13.46
SuSE Linux Web Server	38	0.02	36	0.01	3.05
Carnegie Mellon University	38	0.02	36	0.01	3.05
Default Web Site	37	0.01	33	0.01	9.46
Stalker Software, Inc.	35	0.01	35	0.01	-2.37
Etisalat	35	0.01	35	0.01	-2.37
Beocity	35	0.01	36	0.01	-5.08
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH	35	0.01	33	0.01	3.55
University of Washington	33	0.01	28	0.01	15.06
Sonera	32	0.01	30	0.01	4.14
SSL	32	0.01	30	0.01	4.14
IceWarp Ltd.	32	0.01	0	0.00	N/A
CFC	32	0.01	30	0.01	4.14
cv. Candi Internet	31	0.01	31	0.01	-2.37
University of Helsinki	31	0.01	28	0.01	8.09
Webmin Software	30	0.01	27	0.01	8.48
WEBMASTERS.COM	30	0.01	30	0.01	-2.37
Pro Futuro S.A.	30	0.01	30	0.01	-2.37
Postecom S.p.A.	30	0.01	31	0.01	-5.52
Massachusetts Institute of Technology	29	0.01	29	0.01	-2.37
IT Bureau of Hainan Province	29	0.01	29	0.01	-2.37
CETI	29	0.01	29	0.01	-2.37
Audkenni hf.	29	0.01	29	0.01	-2.37
Advanced Extranet Server	29	0.01	0	0.00	N/A
Prvni certifikacni autorita a.s.	28	0.01	28	0.01	-2.37

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.