lrc.cn

Issued by R3

About this certificate

This digital certificate with serial number 04:90:7d:9d:95:bc:74:34:4e:57:ba:7e:9a:9e:3a:b9:3d:d1 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=lrc.cn

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:90:7d:9d:95:bc:74:34:4e:57:ba:7e:9a:9e:3a:b9:3d:d1
Serial Number (int): 397616776290745918769297572021767423737297
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: b6:3d:77:c0:61:ae:3b:b1:cd:03:1b:2a:d2:3b:28:39:37:fb:3d:6b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 00:a0:28:21:7c:a9:c8:06:8a:47:ef:cc:19:38:c2:89:67:28:0d:30
Fingerprint (sha256): e5:9a:27:e6:d5:e5:5d:86:c4:5f:66:f3:cd:53:4a:e2:16:f0:02:ec:a4:1a:17:13:1f:dc:8a:c3:08:1f:fd:a2

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

Revocation information

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

Check the revocation status for certificate lrc.cn

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for lrc.cn

Public Key Algorithm

RSA

Key Size

3072

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

en.lrc.cn
lrc.cn
sso.lrc.cn
www.lrc.cn

Other certificates including the domain name lrc.cn

(limited to 100 certificates)
lrc.cn
lrc.cn
lrc.cn
meetings.lrc.cn
lrc.cn
*.lrc.cn
lrc.cn
lrc.cn
lrc.cn

Certificate

The complete raw certificate details for lrc.cn in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 397616776290745918769297572021767423737297
 . . . . . . . . [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 2023-09-20 02:24:28 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-19 02:24:27 +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 'lrc.cn'
 . . . . . . . . [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 (3184 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 3393599185367191209146293582100934760605728224161331490736221754416448103087759830386334052343257448828290406712656751255963388868517950104209547738210998241478351764820912751437062211035437428391935033921680201723429469428561914112465192726685483412237426614812413551798150080932412184190217137804174140583050129513987025213950679467609786422741289112234350637436876586800238494115879280467015031175332733897354490362457150795116332308593390854776125982959360386835563165982376284837154346980280255718918817064197541419141563832841478911488545183008532488423806511973717435685695718391336685890493832785478613138398994110035451260070485670888823341433119340597501581824823400871739290661281142596954231415241479989085148736781806601315546605262743347942427861259846570138887133267291950537016284428089706223291745133988755929355562750337092111135602793775775928178269440532144918269572501898176222098381648152621925669698859
 . . . . . . . . . . . . . . . . . . . . [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)
							b63d77c061ae3bb1cd031b2ad23b283937fb3d6b
 . . . . . . . . . . . . . . . . [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 (45 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'en.lrc.cn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'lrc.cn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sso.lrc.cn'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.lrc.cn'
 . . . . . . . . . . . . . . . . [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)
							00f10076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018ab09e24180000040300473045022100eb7e103c8bb95e32dbf95d35251f1c2a9d4c891a8902fd4901f26985a5c5417f022014bda9a721296beb11e20f06c5688fe03f58436b3b9994a70f4d2c4a372d3995007700adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018ab09e24e10000040300483046022100f012a9b3d2780e6ff72aad60fc4a987ba89e6ac83edd24db05300ecb8e1ba61f02210081959dbbfa5b4a3c77972b48a4ed40eaf12b4aad58e4cc0ecd4b21129a1c4554
 . . . . [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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