o4s.io

Issued by R3

About this certificate

This digital certificate with serial number 03:04:37:a0:02:8c:6f:ee:b8:fe:3d:94:79:27:20:2a:c2:2a was issued on by Let's Encrypt.

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=o4s.io

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:04:37:a0:02:8c:6f:ee:b8:fe:3d:94:79:27:20:2a:c2:2a
Serial Number (int): 262771925621921433132496400047894602367530
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 27:f5:e9:95:10:4e:8a:be:8d:7b:b3:73:eb:43:28:46:00:3f:60:02
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 0b:58:ff:56:89:fe:35:42:5f:6a:69:0c:5b:44:cd:4e:98:25:45:d3
Fingerprint (sha256): 27:7a:fe:cb:2e:5a:a3:8f:bc:b4:ad:92:75:45:91:ee:7c:14:8e:52:a9:88:5e:20:0e:e3:41:8e:91:49:74:19

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

Revocation information

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

Check the revocation status for certificate o4s.io

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for o4s.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

o4s.io

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Certificate

The complete raw certificate details for o4s.io in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAseoP8u/Fr3srPx1zvv7p
aspXJ+jqbUkOohJ5BJBjrSRan8nMMqZOPuoBWs5X02no5usIDf8y6ULpyfMshgW2
y5N7pp1Vv347Y8fQnbcKbqy63XH5xLbiB5zBSr00sZvqh9rxQZXwMZW1hZP0f0cV
Syu4pjTiMDQcbe15itzUm26BJUr2N0rzB/o8O496v1GqAhD5Z8tA6yd622KPS9LL
qyk0zpCEeSRKsOaUMWZMv3YJbFFvWhuh0DIV+EBnqHZfUahoXPrsSJjYC/ryowQQ
/kAtlvdn3U+ApG0+75bmbZeVNjwqPnXHc/0deDlmodYV56fnyOa6pgEikd93gbM4
vwIDAQAB
-----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 262771925621921433132496400047894602367530
 . . . . . . . . [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 2024-03-09 12:27:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-07 12:27:32 +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 'o4s.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 (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 22459600401230056633332321908907495399268026645349838238582736269090985964633458744892855182029906243517609194005341008515941605689214466923646480581748253722047925180342236284832742765410987709784477837601657994232830858946542604942916392787511698257106560099913233840795007359611336562775367667410729216162639847729072652996066663045221064001527021794360210887077262753461785795212088436211882824089439854374755679600413261325043578933546895274661900472331693261844756741947949770538473940231976531120312480843215104740418355742191629640645712818167198253346453525867381512930143783321179092175593734247067164031167
 . . . . . . . . . . . . . . . . . . . . [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)
							27f5e995104e8abe8d7bb373eb432846003f6002
 . . . . . . . . . . . . . . . . [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 (10 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'o4s.io'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018e2365bab10000040300483046022100a0bb7563db4453e2f2f9f81da36bebda019d3739d55e26fd8e2e9bc4b04e5adf022100def9b5d97e74ff9a71136bbf6898dc7362ef363ea74110227d2880da87d50be3007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018e2365bab400000403004730450220284ad0da07dc8626d5de4b318a93542714053f88567a6f05fd36afb7db718273022100a08a2daeb32fff303c3617d2529750e37930b89c108e09b629788bb6896cf6d8
 . . . . [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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