www.28921.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:41:0b:d5:47:53:98:7e:4f:df:eb:94:42:99:b9:88:77:97 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): 03:41:0b:d5:47:53:98:7e:4f:df:eb:94:42:99:b9:88:77:97
Serial Number (int): 283470940559000455829174074219547974989719
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 6e:a6:17:fe:4f:20:93:36:b1:84:5b:0a:7e:10:bf:f6:8b:07:15:b8
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 03:5f:c5:b9:4c:8f:c9:ff:b4:56:3d:73:8a:91:70:42:20:80:88:29
Fingerprint (sha256): 75:1e:b9:17:d0:1f:d5:61:92:ac:02:a0:7d:7c:6d:80:09:dc:e5:60:49:0b:2b:5d:21:69:1f:a5:06:8d:d8:a7

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 283470940559000455829174074219547974989719
 . . . . . . . . [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 2020-03-14 21:22:46 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-12 21:22:46 +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 943107872729369602360667953342304889959848997192283881928827204123340187670787028297614837832414897884691893157261635883903943774055525154644364066968764658092306712407844385546067560084303712122859315537786710261539932629040648362230012714287302824605764690902526181860276623109256651371920673961826155198616226011329023663660010838653957841542916125256415715208262544680707289250735714267350020104510926237434424823955227429879680191665428248131093196773665014732598692227907813008071236292762766017547323818565860758679802352599660194275061332797983534779972007386735227046803537379884952311739844908495292871991910255983999473852520944139704286567584137461299598582910176793324565652426587854240510911786862334041955403066622432106368610658921621588346995289155699570007572809660842985536835770022479828330219792765958110597777800007061023355522259429656078120615829246373816543246277668337045791839986262604882292954201504262036249439324395626652925093981214745722819868520953725607524219642025980788680857826787045711057793889078012649403292703987842313736351263383252355792605146961148155345366145947156405372781575746505013048219055161756080468236947274985507610501500281557479203140537373313232904958424910053796577834048521
 . . . . . . . . . . . . . . . . . . . . [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)
							6ea617fe4f209336b1845b0a7e10bff68b0715b8
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076005ea773f9df56c0e7b536487dd049e0327a919a0c84a11212841875968171455800000170db247efa000004030047304502202b289884ac97d04df49cfa1e84c2357fc27923082223a7d2376b5090c68f02a3022100f6f67144d18117059388883c514af8fd5147d2f68254079642a25bab3d781b6200750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000170db247f40000004030046304402204169eeb543c21ddcc821912d10788dc5e54c0f5f364ec3e18065e8eefa53467702206fd567f83b94facd5552a56c1093329348687c980a2fded9d6b886469fe135c0
 . . . . [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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