www.28921.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:e3:af:52:1f:2e:9e:4c:97:1a:c0:c6:a0:ef:20:40:6d:aa 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:e3:af:52:1f:2e:9e:4c:97:1a:c0:c6:a0:ef:20:40:6d:aa
Serial Number (int): 338813996386386715692024291261483476610474
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: bb:50:db:e4:f8:27:ed:26:61:22:39:84:3c:4d:79:88:77:c2:06:4e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): c7:11:72:01:5f:8d:b7:aa:f7:99:a7:5f:7e:58:37:7e:d6:5f:bc:1b
Fingerprint (sha256): 07:23:51:54:65:3e:97:7a:9e:42:1a:c8:62:7d:43:7d:20:4d:65:37:17:4b:83:08:79:2e:47:4a:12:1b:d9:78

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 338813996386386715692024291261483476610474
 . . . . . . . . [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 2019-06-26 06:14:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-24 06:14:15 +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 752809970253499540454290446696772412175166558938074566213084594867977856914865061177082212883080037081834406273335652132582786775494051781552174337661448057747207732824408437293776578058071098595280641053131698204460154076215061079620190936029700150912016537406191398524746270675144577688307358174949041854887456274262587973704989471185000341423498304504958702029148717349929816394613922128661681491587746722405832553229943992274991335209841284741579465541575784492668552046814934221451643181278345939610438437570740693755888746899927573888595921343950011350331436473276216162577113244892576503752308936354816931356187420464159984485420165182781292678284137663093869050554133074321959273994717363551976028187199550930872794420427944172274857816607097774972532895515157243478858919454022992369854069332489417769877382277091230661361287610416306861011523074170616988658046585727377218674533021183460775921255228059257929099410595269655577860857361609187513670316684786218528362254678376762889051454265168872563093086107549724030343234358083838817187539564179506371783216287884931962117684285372172742456161613260082279705258860197471484462033622682151911986295557246594605139291903201288111717572484604636271363832244539263790859210399
 . . . . . . . . . . . . . . . . . . . . [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)
							bb50dbe4f827ed26612239843c4d798877c2064e
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b92a28ff50000040300483046022100977c9e1e433fb3a2451c83a35b5dceb57e84c3de60bb9059a7a35a26d6a3c1740221009541722547fe3c3d39ad0a9b5a504aab0f1c1ab7df151c2301fd4d790cce99a6007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b92a28fe30000040300473045022037d41a35c2c2b957af6187a7c4c5716b39ec87c425a74ff72bc6cf464ae0a2140221008d021be4ec3c76970114ca9fb03575861ee260dd0bdd5563331b1d953be1bece
 . . . . [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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