DV SSL/TLS Certificate for www.tnttraining.ca

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the www.tnttraining.ca DV SSL/TLS Certificate

This certificate with serial number 06:45:d7:4f:cc:b1:19:69:da:a9:80:6e:82:0e:bf:2b:4f:a8 for www.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 www.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): 06:45:d7:4f:cc:b1:19:69:da:a9:80:6e:82:0e:bf:2b:4f:a8
Serial Number (int): 546439397270294624027798012248559979286440
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 3d:01:e2:e0:f5:5a:0d:cb:f6:9a:7f:26:90:53:86:39:fc:fb:7d:aa
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): 1b:38:68:31:9f:7e:65:c1:a2:a4:47:2e:c6:00:68:cb:11:ff:6c:43
Fingerprint (SHA-256): 05:2c:ab:32:a7:97:66:37:e9:f4:5e:4a:2d:fc:13:4a:f0:bb:19:ff:d6:a3:b0:f4:42:50:f3:06:39:26:13:ac

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

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/41.crl

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

Advanced Certificate Properties

Technical details of the X.509 certificate for www.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

www.tnttraining.ca

X.509 Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAm276cBngjfxX/a9mI2PX
r810lPgGclBLZwLLisbQcBDQl2ViDkt3fl4JQjkeoJ3CMC0JmSMOEEgR9DHvpoyh
GJPQuCnBcOhLjMOQrE6t9KxAI6MaPi2e2q6yMwNFlbjJx8tLaHHtBHrYXr/0+Erz
hkfFNmLIp3MIG02MDKYKT7WolcNLHtwDhXbLflXunzgr1wjYhX4mAVbARi0VPG6j
Unwixuywsq7yn5L9n1Rv7UQ/I6Yz4HWwDMnpun8210OTDBEuXoXDG4XoIMzbPwW5
Zqnq9gpZquYzIVkomAURG/FWOqD4bfkrUB+G+bicJK5W5QZhNEIYlGfRFY0HGKPk
rwIDAQAB
-----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 546439397270294624027798012248559979286440
 . . . . . . . . [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 15:21:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-26 15:21:47 +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 'www.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 19621662695813150725591863010141650199961893493832320149570241053388812263247290609141313130933236647384028504831679158892912152698474253156744883307372485304147379417885068406313915139205313776855868136681037288769959384965845008171852044202260738024635455443548788202311772238905878608984334269860653486823385660714137283831772113733378267047207920013645280344305265809857460549291300429418862223599767469693533231927510218399968090585249129555630341028573250623688864202324428687957797712789727421386530856828943970975158398719191778475973757014733305424886929186257342251077737360622341819706954432266084745995439
 . . . . . . . . . . . . . . . . . . . . [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)
							3d01e2e0f55a0dcbf69a7f2690538639fcfb7daa
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.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/41.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)
							00f0007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000197b756fabf00000403004730450220574f3b29750731898e4d195556dc62d7eeb85b6bf38207751a8ae925d0cdc302022100d31b644ef36b90066ea4b78a288a026996e75a3cabc15eba67660b1eb693957a0076001a04ff49d0541d40aff6a0c3bff1d8c4672f4eecee234068986b17402edc897d00000197b756f34b00000403004730450221009c1edbe5c492fb213571f4a2fd98281e5b3cb61dd54ebeffbba9b79af9089f8702201b26ca196c8077d1fa46cc44c1c4001fd43132ccc1efcb3ab924d1c9ef7e36c4
 . . . . [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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