www.28921.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:ef:40:2d:5e:24:1b:e9:27:5f:d5:0c:02:3c:c0:9f:65:63 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=www.28921.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ef:40:2d:5e:24:1b:e9:27:5f:d5:0c:02:3c:c0:9f:65:63
Serial Number (int): 342749649643881255945419124904454147499363
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b1:9b:0c:2b:0b:34:58:94:f5:b4:2b:bd:e9:9b:89:0a:2f:35:8d:09
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 13:53:2f:ea:f2:33:3c:c1:b8:7f:99:07:4a:be:7c:1f:ee:6b:94:4f
Fingerprint (sha256): 74:5c:b4:9f:5c:9f:0b:2f:3c:fd:46:02:bb:bd:3d:99:85:d1:0f:ec:61:f7:00:58:30:fd:ea:b0:0f:ec:61:4e

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate www.28921.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.28921.com

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

www.28921.com

Other certificates including the domain name 28921.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.28921.com 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 342749649643881255945419124904454147499363
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-25 17:40:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-23 17:40:07 +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 'www.28921.com'
 . . . . . . . . [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 968796566173533547603319392253531465919177387070179833523792531378223822302508524435374192191397799446453092005466562793731635284356144828195854428813320771071838621273433227095344987002600473168293402708654306351565851983920629045237644681387945380868856273027980383610608013305153320071167720732874468793131774623038724041381504073441408248458351184777343329436394898872625722473892700026300264675175147243064865148507849549683552456577043604525106217469864488982293225668955645500159932984546246821765456007513665285321589505824130832133541928897950072236913929428854317764536055757561399114338928015981397437105855526316737632502023302101800387289192820711916035064848711864098910955124960474783607636840962025471960832703583633762529600453870919613039499451379192429966188508151855654592773306332739444361105230280227776119043538247468387203444006855970707858803836122870639337054118560935469839333810863327454449838624738100582380406246346708564230782407543251275693375279086692315263200468477068019191155494527372855697203875123275119071109817922203305191416043069761199299710082676768308876514488310213671666988507164222792141252583967389340765298336845271735616001763240558374910556549393031328883219893125274754463433629733
 . . . . . . . . . . . . . . . . . . . . [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)
							b19b0c2b0b345894f5b42bbde99b890a2f358d09
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.28921.com'
 . . . . . . . . . . . . . . . . [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)
							00f0007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016cca140cab00000403004630440220302974d30ca6ca8dca5a81766d4f1668be746710cbb9e595a3370625424a34c902200f7556fb36204c3dcc8ad6823073dd6171cf98041a67a9bbab6b3c731396159500770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016cca140ccd00000403004830460221009f710f50f028b4c1160338086728bf6e7718cf10f999567b0c3e3cd57a294a5a022100c5698dcb96653154cd99adeb213a9b879535c4f3ba98a3cee79c0d027ed21dd8
 . . . . [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)
		003b3094f8b9a2bf4e9f46a84627790b55451dae30f7e1fdab55751d7db5bbdffda594485713e31183e357fd21c12aa9dff1ef7ad02e65d58fb6c08415596c99c641389841c9b433519ca506be750c5761c577c5e7f72c1e62ddce1a8ff4fa5600832bc438fb6770c2525dc831c2ff6b8338a5e943e6cdfd3691d18baa07ad53567b63975a1bf20eeca848875a29212d4d9268bef1c92c8a99d4fbed3986d93877660e9d5f826fcedd64520be0564c0424494f043077c6efd52454ecf566ec222a7004fa9bf8a2f82856bb5fcf6792b12b94830c280e4b3af7d50d9b8cacb97f4b0b5f35930b096f9ac9447bc13fc74d8546331c513a36b39c0d5700d3c14f8a22