SSL Report: dfmcourses.online (20.70.1.192)
Assessed on:  Mon, 10 Nov 2025 02:02:39 UTC | Clear cache

Due to a recently discovered bug in Apple's code, your browser is exposed to MITM attacks. Click here for more information.

Assessment failed: Unable to connect to the server

Known Problems

There are some errors that we cannot fix properly in the current version. They will be addressed in the next generation version, which is currently being developed.

Common Error Messages

Certificate #1: EC 256 bits (SHA384withECDSA)
Server Key and Certificate #1
Subject dfmcourses.online
Fingerprint SHA256: 2eed2cdf0387c78a59d8c73c929be612ccfb69eb86353888d526a7eb5ec8c115
Pin SHA256: 7ixottQxUDacW7z2qB4xxssyC+qs+Vgx/duMY0FTRsk=
Common names dfmcourses.online
Alternative names dfmcourses.online www.dfmcourses.online
Serial Number 05f51fc5276d8915d7cbe6c2b3005e171b41
Valid from Wed, 08 Oct 2025 11:37:56 UTC
Valid until Tue, 06 Jan 2026 11:37:55 UTC (expires in 1 month and 27 days)
Key EC 256 bits
Weak key (Debian) No
Issuer E7
AIA: http://e7.i.lencr.org/
Signature algorithm SHA384withECDSA
Extended Validation No
Revocation information CRL
CRL: http://e7.c.lencr.org/66.crl
Revocation status Validation error
CRL ERROR: IOException occurred
DNS CAA Yes
policy host: dfmcourses.online
issue: letsencrypt.org flags:0
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (2052 bytes)
Chain issues None
#2
Subject E7
Fingerprint SHA256: aeb1fd7410e83bc96f5da3c6a7c2c1bb836d1fa5cb86e708515890e428a8770b
Pin SHA256: y7xVm0TVJNahMr2sZydE2jQH8SquXV9yLF9seROHHHU=
Valid until Fri, 12 Mar 2027 23:59:59 UTC (expires in 1 year and 4 months)
Key EC 384 bits
Issuer ISRG Root X1
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 2eed2cdf0387c78a59d8c73c929be612ccfb69eb86353888d526a7eb5ec8c115
Pin SHA256: 7ixottQxUDacW7z2qB4xxssyC+qs+Vgx/duMY0FTRsk=

EC 256 bits / SHA384withECDSA
CRL ERROR: IOException occurred
2 Sent by server E7
Fingerprint SHA256: aeb1fd7410e83bc96f5da3c6a7c2c1bb836d1fa5cb86e708515890e428a8770b
Pin SHA256: y7xVm0TVJNahMr2sZydE2jQH8SquXV9yLF9seROHHHU=

EC 384 bits / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 2eed2cdf0387c78a59d8c73c929be612ccfb69eb86353888d526a7eb5ec8c115
Pin SHA256: 7ixottQxUDacW7z2qB4xxssyC+qs+Vgx/duMY0FTRsk=

EC 256 bits / SHA384withECDSA
CRL ERROR: IOException occurred
2 Sent by server E7
Fingerprint SHA256: aeb1fd7410e83bc96f5da3c6a7c2c1bb836d1fa5cb86e708515890e428a8770b
Pin SHA256: y7xVm0TVJNahMr2sZydE2jQH8SquXV9yLF9seROHHHU=

EC 384 bits / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 2eed2cdf0387c78a59d8c73c929be612ccfb69eb86353888d526a7eb5ec8c115
Pin SHA256: 7ixottQxUDacW7z2qB4xxssyC+qs+Vgx/duMY0FTRsk=

EC 256 bits / SHA384withECDSA
CRL ERROR: IOException occurred
2 Sent by server E7
Fingerprint SHA256: aeb1fd7410e83bc96f5da3c6a7c2c1bb836d1fa5cb86e708515890e428a8770b
Pin SHA256: y7xVm0TVJNahMr2sZydE2jQH8SquXV9yLF9seROHHHU=

EC 384 bits / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 2eed2cdf0387c78a59d8c73c929be612ccfb69eb86353888d526a7eb5ec8c115
Pin SHA256: 7ixottQxUDacW7z2qB4xxssyC+qs+Vgx/duMY0FTRsk=

EC 256 bits / SHA384withECDSA
CRL ERROR: IOException occurred
2 Sent by server E7
Fingerprint SHA256: aeb1fd7410e83bc96f5da3c6a7c2c1bb836d1fa5cb86e708515890e428a8770b
Pin SHA256: y7xVm0TVJNahMr2sZydE2jQH8SquXV9yLF9seROHHHU=

EC 384 bits / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 2eed2cdf0387c78a59d8c73c929be612ccfb69eb86353888d526a7eb5ec8c115
Pin SHA256: 7ixottQxUDacW7z2qB4xxssyC+qs+Vgx/duMY0FTRsk=

EC 256 bits / SHA384withECDSA
CRL ERROR: IOException occurred
2 Sent by server E7
Fingerprint SHA256: aeb1fd7410e83bc96f5da3c6a7c2c1bb836d1fa5cb86e708515890e428a8770b
Pin SHA256: y7xVm0TVJNahMr2sZydE2jQH8SquXV9yLF9seROHHHU=

EC 384 bits / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA

Click here to expand

Certificate #2: RSA 2048 bits (SHA256withRSA)
Server Key and Certificate #1
Subject dfmcourses.online
Fingerprint SHA256: 9783059f63cd46a014b169636cbf239deeabd4e10377cd92ef8e19ef2fd7f355
Pin SHA256: Z7Xe+khchtKNljfOHigTj8kPIU7j1TM2uhX0dLu9KOA=
Common names dfmcourses.online
Alternative names dfmcourses.online www.dfmcourses.online
Serial Number 057744b3aa456e10f670624ca4b477aa24b1
Valid from Wed, 08 Oct 2025 11:37:49 UTC
Valid until Tue, 06 Jan 2026 11:37:48 UTC (expires in 1 month and 27 days)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer R13
AIA: http://r13.i.lencr.org/
Signature algorithm SHA256withRSA
Extended Validation No
Revocation information CRL
CRL: http://r13.c.lencr.org/50.crl
Revocation status Validation error
CRL ERROR: IOException occurred
DNS CAA Yes
policy host: dfmcourses.online
issue: letsencrypt.org flags:0
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (2594 bytes)
Chain issues None
#2
Subject R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=
Valid until Fri, 12 Mar 2027 23:59:59 UTC (expires in 1 year and 4 months)
Key RSA 2048 bits (e 65537)
Issuer ISRG Root X1
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 9783059f63cd46a014b169636cbf239deeabd4e10377cd92ef8e19ef2fd7f355
Pin SHA256: Z7Xe+khchtKNljfOHigTj8kPIU7j1TM2uhX0dLu9KOA=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 9783059f63cd46a014b169636cbf239deeabd4e10377cd92ef8e19ef2fd7f355
Pin SHA256: Z7Xe+khchtKNljfOHigTj8kPIU7j1TM2uhX0dLu9KOA=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 9783059f63cd46a014b169636cbf239deeabd4e10377cd92ef8e19ef2fd7f355
Pin SHA256: Z7Xe+khchtKNljfOHigTj8kPIU7j1TM2uhX0dLu9KOA=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 9783059f63cd46a014b169636cbf239deeabd4e10377cd92ef8e19ef2fd7f355
Pin SHA256: Z7Xe+khchtKNljfOHigTj8kPIU7j1TM2uhX0dLu9KOA=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server dfmcourses.online
Fingerprint SHA256: 9783059f63cd46a014b169636cbf239deeabd4e10377cd92ef8e19ef2fd7f355
Pin SHA256: Z7Xe+khchtKNljfOHigTj8kPIU7j1TM2uhX0dLu9KOA=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA

Click here to expand

SSL Report v2.4.1