o4s.io

Issued by R3

About this certificate

This digital certificate with serial number 04:f9:21:4b:3e:ab:c4:97:87:4e:aa:b1:e9:7c:dc:e3:58:f3 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=o4s.io

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:f9:21:4b:3e:ab:c4:97:87:4e:aa:b1:e9:7c:dc:e3:58:f3
Serial Number (int): 433223708307598209789790975230487174535411
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 7d:43:1a:92:db:ed:f7:7f:3e:4f:56:8d:c1:cc:96:5c:e0:a5:1d:bf
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c6:55:d3:ff:c4:ac:d1:99:6f:93:7b:5d:e6:5c:a1:96:66:a1:87:6d
Fingerprint (sha256): 3c:4f:cc:ca:2e:e8:c9:f4:7d:db:81:a1:26:cb:7e:b5:68:fd:1a:26:37:74:4d:6a:f9:9c:86:91:9c:43:45:26

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwr1wNBCxb/nSAVglgICN
eH3dgKYJFys14laEnDWKfieU6hx5pI1kLQ++7LKg+HegmCKA9eMKkPjbCV9dRvmu
sLGZuZCBsmh1qZtZyMKpHBbsMUtDqqngOaWkyka+z3eL8lE6yR69EZBKL71nWLo9
xaCQa/lRLee7KMszAGeoN5bcD83A+IJukwaBNThedJRYAmmjejwBOUc0eKAQcoYS
9Td6QnQw6L5fOCyWeC0glwhFxR8NnXeHP5Cf9QBe/sJyzCr+5goOtklQDmHebiqX
LgG2PeMutRd77MqWGV2yMXCZTFVXGm6A8N47DsXMpO3InmwZ9deWDO0ibKUD1soy
xQIDAQAB
-----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 433223708307598209789790975230487174535411
 . . . . . . . . [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 2022-11-19 12:27:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-02-17 12:27:31 +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 24583646668053200508934216385387522847420792725625583424948163693430966645413520903543621354925147485193114030894077781924738247077068896403713489390719920273977369222619379922198485167046128284056831486951901432690911384671897063118805610322984198145130451316202119336892713384692362947640801835660024345257504952282199436621698222844596275983034955517221445481734907711564675998348000214069726946165432830289181599602347861013054780121073161665591409850193143247642512859158942928612837164879615158408666172256601182681501018475747120114701743581043728570834002625066510142361889986508330226868210876803380729754309
 . . . . . . . . . . . . . . . . . . . . [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)
							7d431a92dbedf77f3e4f568dc1cc965ce0a51dbf
 . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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)
							00f0007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb499000001849012a8c40000040300473045022100a6e7d6250a326d8dd7f76c441b83f75f806266ea57be16b2f3c85267ad494060022044f33cfbb353dac9cc6144c2a5cb70cc7397e750941e1d737cb2eca2b371f7690076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb52000001849012aad00000040300473045022029d87a1ee9350285d8ec279a8b1a16d86f1d5fdaa0638f11a1bed8635732ce2a022100925fc70796fb28c9e4a4332b1417f637bbf2ee169ccb3142d961ea657bef41a8
 . . . . [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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