DV SSL/TLS Certificate for tnttraining.ca

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the tnttraining.ca DV SSL/TLS Certificate

This certificate with serial number 05:c3:27:98:f5:0f:e2:4b:1d:84:f1:96:97:bb:20:ca:01:15 for tnttraining.ca was issued on by Let's Encrypt.

This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for tnttraining.ca provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:c3:27:98:f5:0f:e2:4b:1d:84:f1:96:97:bb:20:ca:01:15
Serial Number (int): 501969125299791152374750651575539698630933
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: b6:39:71:33:54:da:b6:df:c1:ee:3b:af:67:45:c4:90:a6:96:64:8d
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): b9:91:bb:34:c6:28:b4:b2:ed:6b:ae:46:77:d7:68:08:00:24:03:17
Fingerprint (SHA-256): 9d:e2:fa:81:ae:3d:6b:ab:4d:6b:6e:e6:f4:09:46:68:60:5d:55:df:63:68:a9:76:88:af:23:85:53:d6:35:cf

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/22.crl

Check the revocation status for certificate tnttraining.ca
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for tnttraining.ca

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

tnttraining.ca

X.509 Certificate

The complete raw X.509 certificate details for tnttraining.ca in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhmfxcCW2rDCHxtPi+Ccj
hQaNlcrmAg4oVWV6I45eRehsJozjWJdHmborOIiCWsGsJVy/55eyveTXTWukjAXM
BUZUQFtxtvM+uk+8KwbbFdEDpreUn65oAFuyeTPx4XuyBuUaF3xEHPUEHbXDHaoT
lYd598EnUDbyc1iwV6sYgXhiiXR5Hlm8njlNJrNY9gwuA/zx3GjiopWcVF43o+ZR
HIXLBeGmQQYFSjXohIYjqEyUd3N+6g/Fc43+RYgyDIzdR/b+FjK7K/lUoDQ+xsig
gZaJANtSAohy8K48T1eDs+xiXWc98psBqEW08YglYpRByBOtwO6LPOjG8FLbbK7g
FwIDAQAB
-----END PUBLIC KEY-----

ASN.1 Decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 501969125299791152374750651575539698630933
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [c:0|t:5|false] NULL []
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-28 12:21:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-26 12:21:56 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'tnttraining.ca'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL []
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 16967189127029397377540728951572535278695395081442110458386831155224122115083585043942979714329977483860152647429786672606934191353517285897791675122234300928747615110368816725364818352974981314204120926128477010495932973403074986713848129654324617316352738912431486675709278170020662862460923794500790793374561585233882247808709697102184011397827451969420337162892875941657153329464265617313645165856937988519083016608643157051652473554290291784351064959220092269109425286845009860953851946149454448467175054749931129677675632817712149141568604299225872213171392712627083306494972231855221832935440159847422802976791
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							b639713354dab6dfc1ee3baf6745c490a696648d
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tnttraining.ca'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (12 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.c.lencr.org/22.crl'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700ed3c4bd6e806c2a4a20057dbcb24e23801df512fedc486c5700f20ddb73e3fe000000197b6b24b780000040300483046022100e89f4cb680b46b7081e58ed0a52a1a2095ed07e8cea97f44c62f3854971f0aea022100c447ae6d49cb91e19c663374a1e7edfe65289b05eca5799130d2ce8cbd1a46520075000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa3400000197b6b24b7a000004030046304402201d2101ef6d1066046c54a962de29bd81021d70c75083c7693f7ebf514f77165002204c6c8fd459c1aeb8d22ccbfe2b7e1ad483f142917193501bf63f9b1397b85f15
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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