*.highskill.fi

Issued by R3

About this certificate

This digital certificate with serial number 03:0b:7d:b4:32:b8:32:e4:8c:59:92:c4:43:8c:d8:c6:30:f7 was issued on by Let's Encrypt.

With 4 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • 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)

Certificate Subject

CN=*.highskill.fi

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:0b:7d:b4:32:b8:32:e4:8c:59:92:c4:43:8c:d8:c6:30:f7
Serial Number (int): 265247052973032926424624672741092126765303
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b5:ac:e7:6c:7f:57:f3:b9:e8:37:fc:44:3f:54:c4:2b:e4:ad:94:dd
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c5:7c:45:b0:13:81:1c:54:92:d9:8f:3f:6b:66:ec:8c:05:80:77:96
Fingerprint (sha256): 69:67:5f:4f:83:bd:f5:43:ca:e2:f4:db:4a:55:08:f4:2e:0e:80:cf:7f:27:33:6f:06:20:44:94:72:9d:68:26

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate *.highskill.fi

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for *.highskill.fi

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

*.highskill.fi
*.postilokero.net
highskill.fi
www.highskill.postilokero.net

Other certificates including the domain name highskill.fi

(limited to 100 certificates)
highskill.fi
mail.highskill.fi
highskill.fi
mail.highskill.fi
highskill.fi
highskill.fi
www.highskill.postilokero.net
highskill.fi
*.highskill.fi
highskill.fi
mail.highskill.fi
highskill.postilokero.net
highskill.fi
*.highskill.fi
highskill.fi
highskill.postilokero.net
highskill.fi
highskill.fi
highskill.fi
highskill.fi
highskill.fi
highskill.fi
highskill.fi
highskill.fi
*.highskill.fi

Certificate

The complete raw certificate details for *.highskill.fi in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtCSMdI7WSD3xu9geMtZX
c+WYTbSSG8e/wBSHO7VF+VmSD5kXFbiL+uRJQcXodOu6g//14ATLzPSv6K8qW9H2
HCYniqa0bgcbz5Y/rvTA2vKjAGgSQN3if3m2/421egn1j2HvWfZ+TUwMVg703oyZ
dTaoxCnGMaNHncGmT95+edPkja+f6hCkhFfcmihjQfZpcbY0MEu4EuNY6mzqcyI6
hQZJi30ACpqrtfRyagHXpvAsm2AQqGgidF3kvisHmiDRf6AD7Nn2ogEweoVIng6Q
pauxhR5s7VKhtOzSrRDunGVd7yDJjMEI9lEN9eos/HL+n0pAVou4hyYaIdqUsBL4
AwIDAQAB
-----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 265247052973032926424624672741092126765303
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [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 (countryName)
 . . . . . . . . . . . . . . . . . . . . [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 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [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 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-22 00:46:04 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-20 00:46:03 +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 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String '*.highskill.fi'
 . . . . . . . . [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 (rsaEncryption)
 . . . . . . . . . . . . . . . . [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 22740917706667244598696584164199571566085465755281196967959990855956348986576896036785322264764004241832423599168054267939268461300955939103074370531525150438117718881577191073519589665654363691061348640927071648122138898028636234122572266873449224340997869211757271841972994484239777269363657496119982183683353627358422798282944635235936314995364360766836837620351691387917377188364031540570761403504552139885734610142767750797410022786054268998438018048948850334149035666937757550884702952056943865999071432472517435053656201008026848715886522797898087626206901274728942733311572254216418082842142374022782660048899
 . . . . . . . . . . . . . . . . . . . . [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 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [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 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [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 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [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 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							b5ace76c7f57f3b9e837fc443f54c42be4ad94dd
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (73 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.o.lencr.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (82 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.highskill.fi'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.postilokero.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'highskill.fi'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.highskill.postilokero.net'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [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 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b550f8e35000004030046304402206a5ba95a329be41678987bdaa426dfc46731e4b1c4d619ea96e45e9a89c59d6402201d570620f85f7586049c2cf271d7b4525d43f0fd6980a158051009c06dcddf640076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b550f8e2c00000403004730450221008ec9a4ed2a9ecaa3495edda2b727d0b3ce152d50002a4a89c409187fa4a1d37a022049f548799332f0e23353df1eb48616aa4ea2fc6424f04b6955ae57ee8363b08f
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		00b4284344eabfa9df62e194dd393543b1de0ae1f1cc3233fd3bda4220e0b8c516d16443f5776977f2f32b8a53851d1e5a864b955fb07db6594df72374a110e26debd6886f5b913165ed821db0665ebabbe5b77a19b71840f347e45a298482d0424ff1b1f6d3c6f6bdb7a51cd80fee9ff3f6333e99690be4b5eec05fceffc7d2dffb5161b1b753d4c45097f79a1af19b9785e9efccd354f61060dbcd55c952fc6aa913f0b15d3a58ee1f94bc25fc8255117d17ccc9e02f67c64694cc7e9f1c72e7db9291bc3a45651e93c5bd35ff81804c572a001b1ed58e438a90e5779a15117e3556d2c47f02f981b59e71f0f6957e82e9c9c36d0a1b0d4d53f491f23180c525