qingqi.dev

Issued by R3

About this certificate

This digital certificate with serial number 04:50:e9:d8:54:f1:64:70:b0:58:9e:05:76:4d:3d:a0:44:25 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=qingqi.dev

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:50:e9:d8:54:f1:64:70:b0:58:9e:05:76:4d:3d:a0:44:25
Serial Number (int): 375982566462702871190843069654728775320613
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 90:75:96:2a:cf:c8:cc:9d:f4:eb:b5:6e:4b:83:b0:fd:da:df:82:56
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): a0:e5:e8:9e:07:50:48:c9:cf:e2:87:ad:5c:ea:b9:a5:65:b2:f8:35
Fingerprint (sha256): 6d:7f:03:b4:71:9e:e7:f7:e1:11:41:49:e4:3e:17:0c:85:39:65:fd:d4:ae:31:51:49:f6:50:1d:26:47:ec:26

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

Revocation information

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

Check the revocation status for certificate qingqi.dev

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for qingqi.dev

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

qingqi.dev

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Certificate

The complete raw certificate details for qingqi.dev in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxhc/rnLcD6dIcjKfdEAK
gXRwrzJcuh2PBQPFTyl9sDMZWqzVulh4a3ujR6+24xv0dtkLP6+AyhrzOAM1f+C5
EimRnXRDt6i7DfYf1iMnUWOlsIWCywatmPEHfPyjC4ikGsHzrY9yYsFPyblwb/eA
dBNZnC5EoOZ3zKaqaiRzexzr4gEQp4oamjuGx06T3KI6tthrABitds34K9z2goqt
Awtt8hcxQnQJ9oN2tTzHZXdcy/L1Gj/sZJqIcmQY+8EbKgR7z9OhHiv4aVUXjVy4
8HmAr0V67BkHk39H3cPhDjEQD398h4cpQ1SmpVnKhNTF9okHm9Z4zbG1/ph7h5ev
nwIDAQAB
-----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 375982566462702871190843069654728775320613
 . . . . . . . . [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 2024-03-21 17:12:59 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-19 17:12:58 +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 'qingqi.dev'
 . . . . . . . . [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 25006648771962140858844526665698261361923919557838100995323378112831340732862202393927847948197610973554128639913046817102362603366505065013095411977984966334011995464432956554717561668942163743210439009764151922647432365152559478747915149726648780482406909329123946502998598265556771581914292914154446063534764323594140262494276742838737635499650683856627723347198299262530610413592642492423511122998327885971743162985010518014573183759997887949628995247685023491310862191354786889315499629716706360544240504435936768939952059441304538180264772104726276165405714138781016045956373290629764650503124884696036483248031
 . . . . . . . . . . . . . . . . . . . . [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)
							9075962acfc8cc9df4ebb56e4b83b0fddadf8256
 . . . . . . . . . . . . . . . . [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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'qingqi.dev'
 . . . . . . . . . . . . . . . . [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)
							00f00077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018e62375d1f0000040300483046022100d4bca93ddbed090a039b3d87bba01d5227edc942d0ad4dddfc296cd202d6ec57022100b0b4e92f076d88332eba039442b9a75de2dfdfc62993c6bfa7726d012e67c914007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018e62375d300000040300463044022031eced621615ae970b3242a722116eade4f8814257b482452092a5a484de72b40220725bcd03aa41a0df083fceb361c8e32e5b01fc25d5c270963a65bfe4117ea366
 . . . . [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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