studyo.fi

Issued by R3

About this certificate

This digital certificate with serial number 03:01:1b:30:3e:71:78:76:16:af:11:3c:f4:8a:f5:e8:f9:29 was issued on by Let's Encrypt.

This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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=studyo.fi

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:01:1b:30:3e:71:78:76:16:af:11:3c:f4:8a:f5:e8:f9:29
Serial Number (int): 261713279814836539555691842709277043652905
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 87:06:92:93:0b:56:65:6d:55:9b:bf:80:e4:50:13:a3:b6:0a:ba:86
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 6d:5f:fa:d2:5f:3e:d8:8e:2d:64:f2:ac:29:ed:4f:67:06:16:e7:bb
Fingerprint (sha256): 7c:4c:dc:d0:7a:7d:9b:e6:8f:96:40:05:2f:76:04:43:87:a9:c2:91:3a:4c:21:0c:e4:d0:8a:0c:76:b2:ea:23

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

Revocation information

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

Check the revocation status for certificate studyo.fi

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for studyo.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

studyo.fi

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoBYNAXlPzUHfOz4s5b0t
/tDii8mQZ2Y6hSTaaYkm0HyL4tAlSYFKAL/ORX88AI6fCzexEfO+JUglcwp/FeqJ
+D01Ekww4FMfRvNBAS9g/LXC3aBnOSR50//to88/0WBsK6DmYolcSHWqIToyNpfn
pONwyNeezjI8Tv1D09wlVpu51vBgCyuZnyCMKNNaE5KqNqyrns8K7MOPFUEZNXde
PBOf1tSVJObkWCSJqWbOIcJuPuNS1qgmfF/daxFvHsLSMWQtiimIAM3bin3Pt8MG
aOu7JtQWhxBcdF1YS/nd4JxvZqeXuSwLO/zWWXFRd0x765n4Zd3loN92/KbHytYP
qQIDAQAB
-----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 261713279814836539555691842709277043652905
 . . . . . . . . [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 2024-04-30 15:15:11 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-29 15:15:10 +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:19|false] PrintableString 'studyo.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 20209002451160073580328190849369403923088018769268352576730091650441077889502796927150563705303543233855576517386776518395368042808351742452415210215067284914108008114821104414253593096877958934093065135644553520566939216407395920965328433330003698903544509213240770606075479570276173539930605472824921314678503769578928921779620426470703944797430251339481719408223560839942629162542229726971971930485834326258138930096621556617877124518241048432350936207053056586077364617443052513742892642488420797787446031010471233665837665146886565744702293989390703850410435214695941213662076227781196408234751417924665101127593
 . . . . . . . . . . . . . . . . . . . . [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)
							870692930b56656d559bbf80e45013a3b60aba86
 . . . . . . . . . . . . . . . . [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 (13 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'studyo.fi'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f2fc9e5e90000040300483046022100990749b7cd8b1b149c986376eae548fd8b5aa1b05bc33b9994765e816f8dd377022100916754b6688b49a9b7a8bb3de1bbd4b3466efab6bec56d008c92d3d6aa53a758007500dfe156ebaa05afb59c0f86718da8c0324eae56d96ea7f5a56a01d1c13bbe525c0000018f2fc9e6b9000004030046304402206ba55ef1244d321653332c1168053f6b5156920cffc63f3c8f7b117ae26a077d02200e12be90c73b3cf42928f4759bcad47ae53f5689bdc4ceb293d9300f8246bc31
 . . . . [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)
		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