doufutuan.us

Issued by R3

About this certificate

This digital certificate with serial number 03:97:89:e7:1f:f4:8f:39:d1:a8:8b:c9:c3:02:4f:b0:10:ad 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=doufutuan.us

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:97:89:e7:1f:f4:8f:39:d1:a8:8b:c9:c3:02:4f:b0:10:ad
Serial Number (int): 312902799504469998564553448956180898517165
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b9:9c:72:8b:b8:ee:dd:ec:d9:f3:cf:29:7d:7a:c3:9b:2c:a3:7a:80
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): da:f8:42:b7:20:89:cf:62:49:04:5c:95:dd:7a:ea:88:b7:53:0f:ff
Fingerprint (sha256): e2:77:3e:7b:91:7c:93:25:c0:15:02:46:c4:de:a5:26:e3:47:2e:89:4e:55:ba:a8:4a:98:7a:a1:45:45:ff:50

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

Revocation information

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

Check the revocation status for certificate doufutuan.us

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for doufutuan.us

Public Key Algorithm

RSA

Key Size

4096

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

doufutuan.us

Other certificates including the domain name doufutuan.us

(limited to 100 certificates)
ww11.doufutuan.us
doufutuan.us
doufutuan.us
sublidesk.com
doufutuan.us

Certificate

The complete raw certificate details for doufutuan.us in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAo/s/frrFTjpBF4PN4SWD
InJSXgvCoXnOTXLykkpsfTro/Oi5z9TT3YdwMT8lTKN5OI4L0PtQ6Kp3538l+Heu
VgQYy6krBmc+S2eO8McCbXg6WmRWMrTDwnuDKPvpWRuAfwd6hfAcZpFu5X/khxUd
FvuKutd76KbJ/DAGhBrB4wB6sneUTasGpeE0AEaCbuBTb93MT0gUz368/j2gQqfy
FI7M3bIcHANW+edWmOHC6Jyj7mlhB14wbV7/3+OnjQHE/YMvR+N7m5IUpvfdzuLh
ISS9Tn9MIa2HBDmaA7eiBwR3kzFCWr6ullv8mqhKZ1WiDIWEcP7AjlHgTyfKKo5U
WEAxvEVdA1SI/Mw6KpP4pwJXg6A5tiop8jXYQeUEuoXGRS2xSl2EHkm+QxXk4F4P
tpJ11k3MAkPoAry7FHO23OXZVMTdOqZdQrWCWbTSqTYoFhedop6nXmk4oNgCqej3
h2Di7ae/K8LvJEXiYTWfPG/QKYMVLY2jI7une7cIYgG1OZh+PT5HnKMmVR+SMMoD
G7K003xbezAqN6GImnPw1YN7UL9rPp01ZO0zVpanVQe4jV8tUSPR55LWNuTiJHH6
TuqpY3IwUqPthiSpjDmD1vexYyNnnkQ5rFI4MQ0R2rMF6p689beNWE00vT0y7j0u
ywY25dFSo0E5jy+FTQJHlYUCAwEAAQ==
-----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 312902799504469998564553448956180898517165
 . . . . . . . . [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 2023-07-17 08:11:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-15 08:11:14 +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 'doufutuan.us'
 . . . . . . . . [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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 668985899200369059623576102680102243681406994576836989807167942935438091418813000121079308987795991836727543759439638506623267665710738911807533520975606285848078064620962285260562552121040806256409289825792040683695696486516993408445847800245869878168114953776311154165506405163533450596395678884769867055159894733970641912356006814378636728377086882458299946184335853523332750201798287266583997110990996425828686104956139832571847597253983369764373991034472754706271779234470388339011366308146017631363195952617116695812228012716351245863622851567686010978932305924293829981871114765220240932399639834779996874268727357485640496055524806975720343172936846840240402376269252399082633220445937746614130940853040285206344092495804403168553406962319818965072207402712138795812758109546296479695118048132802957428191936706120005916253081306382848114298081262042284218733264363885572828285064844358547709991910635265764544020662950140897077260449101604503275543962381692087859882156100047952875216872273067646770435778967283678978218111883658932091236383827836637099625855763097911990458986782096019755490131143875251685570944529899398328090797079535205485596248007708310489780986620644579784025133104833445853071555104996932430311429509
 . . . . . . . . . . . . . . . . . . . . [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)
							b99c728bb8eeddecd9f3cf297d7ac39b2ca37a80
 . . . . . . . . . . . . . . . . [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 (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'doufutuan.us'
 . . . . . . . . . . . . . . . . [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)
							00f1007700b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000189631e47190000040300483046022100f95267779f06ad029a5df180c973fe73550e01b8b54b93e91f01218e4f3b4852022100ae6f201545b421d5933fad1e80c0e3db0c3d5a3f2105be7a3ab2b34b922c57300076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000189631e472600000403004730450221008c887e4021640821fea238e75f131baa2ff99f20d7f5d6112918e8f2659fe022022035a5873e6fcc1d4fe57a077aed99ebdf55392b11f424006cd5bb6d3737cca84c
 . . . . [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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