o4s.io

Issued by R3

About this certificate

This digital certificate with serial number 04:80:f1:8d:13:ed:5d:c0:54:b8:ec:9f:3e:f4:12:8c:e9:a9 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): 04:80:f1:8d:13:ed:5d:c0:54:b8:ec:9f:3e:f4:12:8c:e9:a9
Serial Number (int): 392326363157934199650896161114312609163689
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: ce:20:87:00:52:39:b6:76:33:f4:01:43:e6:e6:c5:7b:77:65:98:5d
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 52:d7:83:f2:b0:5b:47:b7:dc:d9:8c:eb:41:5c:17:47:76:68:54:00
Fingerprint (sha256): 3a:29:0b:3d:65:b3:0c:8a:93:af:8f:6e:66:7c:ba:bd:45:e6:89:50:0c:c7:b9:b6:2e:93:b9:38:d7:67:59:db

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzmcJq4dooLHyU/31OoFm
W5neaw+CIwLxbsLr3/wfNoL7tJlBoO5/uzQBpEt/O0oIGNjvwxm6Z5VluBX0dIqx
72hF6Emplkt+wIQnS+Nb6C5sGxqAWKDByiX9+QRsjMxeSzuYpaVXvvQIg7xtNgJN
3ILTF5Xgauq1I/wpFZzu97pYRICo58knNWdCtpbAle1YsFg27PgIBdD6z0KfNHFs
WS1j5jisqLbYALBtdLNd9r8VGIjp+sNKNHEKIIaHbCuDx8xjZaj6eIckd/9JrTq7
/JtIW4iaSAlTYOMqbXTWLXXLWVdj+GMy4nsv0S5T6r46dIk4Np4VyUSNrvB33tHx
cwIDAQAB
-----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 392326363157934199650896161114312609163689
 . . . . . . . . [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 2023-06-11 12:27:50 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-09 12:27:49 +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 26055900642865294407762839919164876222048483530277464690625705180998873269694932724055594066321754743690232217987801747594735690204220403227768767869578355505679254410782828164855015926620283139764042392884226064385970948740332788904983690421443372291384105451269841085529046849997531146196599550830479496961998907843433009797982743251091203087702470540250571775257602093241435652805876108981268994839701848919582692598792907231217319281085055843851319640792143128910082985865660992559962366998666278159030985301491437404632748180327181838837183371099054127285102232028064766553028792981723419233240806733853370741107
 . . . . . . . . . . . . . . . . . . . . [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)
							ce2087005239b67633f40143e6e6c57b7765985d
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000188aaa440470000040300473045022100d47d7b97744dccda5de12c06f301fa4f13ab854a494ac8b8266edbd5d09692d10220127a7a75c636b0a52c806bc1552a1e65577ba2fd69007c53d2a0027cdf3f60b7007700b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000188aaa4403c0000040300483046022100a56bcdf9209818aab27a6293175bc7598022403569e5959330dc37702298454a022100d6c45b7f37d0c63533d799860252a92edf521874d73152f1dcbbfa8853fe9bc3
 . . . . [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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