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	April 2005 Count	April 2005 %	March 2005 Count	March 2005 %	Growth %
Verisign	73,519	33.37	73,457	33.85	-1.41
Thawte	38,306	17.39	38,158	17.58	-1.11
Equifax (Geotrust)	36,628	16.63	35,510	16.36	1.61
Comodo Limited	18,518	8.41	17,971	8.28	1.51
The USERTRUST Network	3,435	1.56	3,409	1.57	-0.74
Entrust.net	3,236	1.47	3,179	1.46	0.28
SomeOrganization	3,118	1.42	3,115	1.44	-1.40
Unknown	2,723	1.24	2,534	1.17	5.86
Starfield Technologies, Inc.	2,379	1.08	2,055	0.95	14.04
Snake Oil, Ltd	2,163	0.98	2,177	1.00	-2.12
FreeSSL	1,779	0.81	1,700	0.78	3.09
SWsoft, Inc.	1,435	0.65	1,366	0.63	3.49
U.S. Government	1,369	0.62	1,390	0.64	-2.98
XRamp Security Services Inc	897	0.41	867	0.40	1.92
TC TrustCenter for Security in Data Networks GmbH	691	0.31	663	0.31	2.67
IPS Certification Authority s.l.	685	0.31	681	0.31	-0.91
DigiCert Inc.	489	0.22	426	0.20	13.08
GlobalSign nv-sa	454	0.21	469	0.22	-4.64
Plesk, Inc.	380	0.17	408	0.19	-8.25
Root CA	292	0.13	268	0.12	7.33
Deutsche Telekom AG	281	0.13	282	0.13	-1.84
Ipswitch,Inc.	246	0.11	232	0.11	4.45
ispgateway	206	0.09	206	0.09	-1.49
Plesk Inc.	188	0.09	190	0.09	-2.53
TDC	155	0.07	153	0.07	-0.20
Baltimore Technologies Japan Co.,Ltd.	147	0.07	157	0.07	-7.76
Kubota Systems Inc.	141	0.06	139	0.06	-0.07
Your Name Webhosting	136	0.06	133	0.06	0.73
Thawte Certification	119	0.05	128	0.06	-8.42
GTE Corporation	113	0.05	117	0.05	-4.86
Apache HTTP Server	110	0.05	107	0.05	1.27
Betrusted Japan Co.,Ltd.	109	0.05	79	0.04	35.92
IceWarp Software	108	0.05	107	0.05	-0.57
Positive Software	106	0.05	102	0.05	2.37
Digital Signature Trust Co.	102	0.05	98	0.05	2.53
Akamai	100	0.05	94	0.04	4.80
My Company Ltd	93	0.04	86	0.04	6.53
Internet Widgits Pty Ltd	90	0.04	89	0.04	-0.38
NetLock Halozatbiztonsagi Kft.	89	0.04	91	0.04	-3.66
Equifax Secure Inc	85	0.04	91	0.04	-7.99
OCC	80	0.04	71	0.03	11.00
Unizeto Sp. z o.o.	73	0.03	69	0.03	4.22
ICS_TREE	66	0.03	63	0.03	3.20
Stunnel Developers Ltd	64	0.03	66	0.03	-4.48
XYZ Corporation	63	0.03	57	0.03	8.88
ChainedSSL	62	0.03	29	0.01	110.61
Azero	61	0.03	58	0.03	3.60
United Network Communications Co., Ltd.	60	0.03	60	0.03	-1.49
CsideNet	53	0.02	52	0.02	0.40
RM	51	0.02	49	0.02	2.53
WebMoney Transfer	50	0.02	46	0.02	7.08
Japan Certification Services, Inc.	49	0.02	44	0.02	9.70
CNRS	48	0.02	48	0.02	-1.49
Advanced Extranet Server	47	0.02	47	0.02	-1.49
ICP-Brasil	46	0.02	38	0.02	19.25
Sun Microsystems Inc	43	0.02	42	0.02	0.86
CRU	42	0.02	44	0.02	-5.97
Webmin Software	41	0.02	46	0.02	-12.20
SCNC	41	0.02	40	0.02	0.97
MULTICERT-CA	41	0.02	44	0.02	-8.21
TAIWAN-CA.COM Inc.	40	0.02	41	0.02	-3.89
KICA	40	0.02	39	0.02	1.04
Sun Cobalt	39	0.02	38	0.02	1.10
Beocity	39	0.02	39	0.02	-1.49
Stalker Software, Inc.	38	0.02	39	0.02	-4.02
NTT Communications Corporation	38	0.02	34	0.02	10.10
Comodo Japan Inc.	37	0.02	36	0.02	1.25
UniCERT Brasil Certificadora	36	0.02	32	0.01	10.82
FNMT	35	0.02	33	0.02	4.48
CETI	34	0.02	33	0.02	1.49
Temp Certificate!	32	0.01	33	0.02	-4.48
DFN-CERT Services GmbH	31	0.01	31	0.01	-1.49
University of Maryland	30	0.01	31	0.01	-4.67
Etisalat	30	0.01	30	0.01	-1.49
Audkenni hf.	30	0.01	30	0.01	-1.49
domainsofnote.com	28	0.01	28	0.01	-1.49
cv. Candi Internet	28	0.01	25	0.01	10.33
University of Helsinki	28	0.01	28	0.01	-1.49
NeoNova B.V.	28	0.01	28	0.01	-1.49
Massachusetts Institute of Technology	28	0.01	27	0.01	2.16
Firstserver, Inc.	28	0.01	24	0.01	14.93
Carnegie Mellon University	28	0.01	28	0.01	-1.49
Your Name	27	0.01	25	0.01	6.39
SuSE Linux Web Server	27	0.01	26	0.01	2.30
Pro Futuro S.A.	27	0.01	27	0.01	-1.49
ORACLE DEMO CA	26	0.01	27	0.01	-5.14
ISPAdmin	26	0.01	27	0.01	-5.14
Franke & Partner	26	0.01	26	0.01	-1.49
CFC	26	0.01	27	0.01	-5.14
community musician	25	0.01	27	0.01	-8.79
IceWarp Ltd.	25	0.01	0	0.00	N/A
Hongkong Post	25	0.01	25	0.01	-1.49
CESNET	25	0.01	23	0.01	7.08
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH	25	0.01	21	0.01	17.27
Cardiff Schools	24	0.01	25	0.01	-5.43
pair Networks	23	0.01	24	0.01	-5.59
Usermin Webserver	23	0.01	21	0.01	7.89
Brno University of Technology	23	0.01	23	0.01	-1.49
Technische Universitaet Chemnitz	22	0.01	22	0.01	-1.49
Your Organization	21	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.