DV SSL/TLS Certificate for stu.ratcliffe.io

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the stu.ratcliffe.io DV SSL/TLS Certificate

This certificate with serial number 05:cf:a6:94:17:3c:da:e9:6f:49:25:02:38:ff:6f:42:ca:05 for stu.ratcliffe.io 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 stu.ratcliffe.io 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:cf:a6:94:17:3c:da:e9:6f:49:25:02:38:ff:6f:42:ca:05
Serial Number (int): 506221300389987714931662357848992224823813
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 0a:05:86:c3:3b:f1:80:3b:56:c9:6a:e3:a9:a9:63:9a:76:0c:00:f1
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): 48:4a:68:4a:4c:45:fe:39:e4:f5:0c:1f:ee:c5:c1:60:c3:17:fb:e8
Fingerprint (SHA-256): b5:22:13:19:16:6f:ed:5e:1d:0f:2a:ac:0b:c6:86:e6:0a:08:bc:a2:e6:16:b3:2c:90:22:d0:4d:63:88:d4:b5

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

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/6.crl

Check the revocation status for certificate stu.ratcliffe.io
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for stu.ratcliffe.io

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

stu.ratcliffe.io

X.509 Certificate

The complete raw X.509 certificate details for stu.ratcliffe.io in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArlVv1BHGWbRux494AEmq
DNkD5RXLosxdTugoCZmCLtfZ/FcNbXiYSuw2fNklUIYlyzWtYZ4l5eRyaGcPhEPQ
V7L5dROhyhA0l/DYUA4aIsUvVCQOaeXKlp7ZqbTUrScUQAOgRZs0x4/Hyq7cr3vT
+doIWO7yBbSpK/MVjLY+iEkWe2woGPuiGJ9cJf7vHLvOyfuWhrn1sfAJH6/txgVO
A2ultXniVbQPOi8vGHJbiir/5b4MZnqV0zeZ9PnO8e7A/gPRh/DvSjXspMN42PyT
pzcbPgDg9GWc4zo2N1e6Yphl6AEqZUBG8z+ZpteZtYSozP13Ei+R6F/K/+e5a+0o
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 506221300389987714931662357848992224823813
 . . . . . . . . [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 2025-06-16 05:13:05 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-14 05:13:04 +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 'stu.ratcliffe.io'
 . . . . . . . . [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 22007595535029984823481508408471896200477161638494645402752125089038529325888524138947876399954919229488055315028308164358717635320037899816804763024129756793559638111197497680613364762688709822347248842296229541020299939019191671186888005664895422012516465049215860113681899333025089624699764867873644853769016315849165706394840171747798625022639489340858121100651310655252258096848021761916847743565968499126490242604610457723519039152355282430807074357166329478317991257425473570342818354012386426844519538633657540359561912969709796449401896173864741842029472203207955524802091670753993046420625832983031697975471
 . . . . . . . . . . . . . . . . . . . . [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)
							0a0586c33bf1803b56c96ae3a9a9639a760c00f1
 . . . . . . . . . . . . . . . . [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 (20 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'stu.ratcliffe.io'
 . . . . . . . . . . . . . . . . [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 (38 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/6.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)
							00f00076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa3400000197775d59770000040300473045022100b8447712fbc8e7b4b617e8481180a13d75a4fca13456f6f1335b660d081b146102201973a6871bc569c16e25b335248bc96b9ef97b59d9bc3f8ded5e517b470dab6b007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000197775d598d000004030047304502201cd0908add4a29d4db470a2f8b3f5a3f0ae0f36c492e2c108f8ce7c852d26d85022100fa3005afe26ae30a945adcf2c8ab43247dd79dd1f2ea8a62e68648ec60cb0f47
 . . . . [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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