www.87283.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:cc:47:b6:86:30:40:92:1b:c8:85:8b:93:7e:5a:62:fd:1e 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.87283.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:cc:47:b6:86:30:40:92:1b:c8:85:8b:93:7e:5a:62:fd:1e
Serial Number (int): 330849783554546991217014302908392228977950
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 49:b6:d1:88:ed:1e:22:8c:14:06:5b:a3:59:0e:f2:81:aa:30:de:a2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): c4:9b:c2:01:56:69:ae:b0:38:69:90:8c:d3:58:0b:22:f7:ca:3c:f4
Fingerprint (sha256): ab:e0:33:82:7e:39:68:a0:f0:aa:2d:cb:fb:a7:d0:c0:a1:b8:04:3b:78:57:79:ba:a3:60:1e:21:6e:db:bc:a6

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.87283.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.87283.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.87283.com

Other certificates including the domain name 87283.com

(limited to 100 certificates)
www.87283.com
www.87283.com
campisalentina.org
79283.com
www.87283.com
87283.com
www.87283.com
87283.com
79283.com
87283.com
87283.com
87283.com
71882.com
www.87283.com
87283.com
www.87283.com
www.87283.com

Certificate

The complete raw certificate details for www.87283.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 330849783554546991217014302908392228977950
 . . . . . . . . [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 2020-01-14 06:36:04 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-13 06:36:04 +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.87283.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 973386908726911785602695447463522571219461364394383706074702910543307272412350967733098108134935905606963936521636382042045711750642377184192802908028697742777590893935747606081764313676877844841087350153927114032259755890683030715868647314175539215136781151522670297518145879527337545268005159384206412202913910879442188722736252937697586337926583650714475675092106439704625767270532438792544536304070829587091890871880702190217883473587204546506023555533929340226967714950805545652971303599690167262555223038876136433868943537678529229300254778257704800019567215945948528249175376652229580681498620533880759106196061664406022310288145381855142868135748410380021279888308739023600560968114887586144828514374231827983808657703520549583784097145527905643105078460469645128622373938690033582713686148561223574987128308362009638051544161022346272547966445614305480415471936730226703509188686259269226690165566635949141670463043549310536698819848500275860962822242625152964612791035201031738367695485106440324212363888196968476442563668931221610521357687100734118364746357932549844865244655704882094417956412472525776452731188120802948929086123749926005234819419716496269793388605620325378941120577942571411046044686560984242825132974851
 . . . . . . . . . . . . . . . . . . . . [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)
							49b6d188ed1e228c14065ba3590ef281aa30dea2
 . . . . . . . . . . . . . . . . [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.87283.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)
							00f1007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016fa2fb1f880000040300483046022100b2f7bbb06fee3852aaf09fedbe317144ffa342dd2904b6f7bbe85bb76e875988022100b09b1ab361a95a3ddbfe5004ab23f5afd6b60b42efab0297113efa4eb59d22c30076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016fa2fb1fc00000040300473045022100ea2e4722288ce6e8219c0a503871dd3b2b63f5f20635af708dc2eed17c9bcca502201d90456e67c838b0089dfb72a0443410af518f8e41100204840daefd9d8a008d
 . . . . [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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