82975.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:9e:a9:93:3d:72:89:1d:cc:17:48:b7:01:10:e9:8a:10:85 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=82975.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:9e:a9:93:3d:72:89:1d:cc:17:48:b7:01:10:e9:8a:10:85
Serial Number (int): 315326875814016304387631624580039399051397
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 72:a1:10:ed:44:58:56:dd:5f:da:32:70:e3:cc:f9:89:0a:f6:58:6c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 1a:8d:60:e5:d3:11:8d:cc:23:02:b0:d5:1f:33:1b:3b:50:3a:e3:ea
Fingerprint (sha256): 0d:f1:e9:72:c3:d8:ce:a2:6b:aa:90:94:4f:ec:05:8e:5d:45:bc:6c:9e:51:84:83:0b:09:73:2e:34:33:22:6c

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 82975.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 82975.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

82975.com

Other certificates including the domain name 82975.com

(limited to 100 certificates)
www.82975.com
reelshemales.com
82975.com
www.82975.com
82975.com
82975.com
72875.com
37782.com
82975.com
www.83195.com
82975.com
www.82975.com
82975.com
www.82975.com
www.82975.com
www.82975.com
82975.com

Certificate

The complete raw certificate details for 82975.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 315326875814016304387631624580039399051397
 . . . . . . . . [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 2019-10-23 05:49:18 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-21 05:49:18 +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 '82975.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 763044852747459265670866587923695660899357850296471022376397922456432804908141107587005817557698133905229375670321139527051602427354941192605330946017795965437826323535773540541070389546793712063453380155950705696731316650196185684920563703224699376161096838789101635716625631748987918567529810150666753751222306291739803853404086924191358682628975855850789465781118788682990918355595309326222141923189120857478490960538609927301599693486595000229190904116913509560303980366281751457007437857969912318834898366408408245843657622382496224373806728374679608821942757462696867364753644052941239496962526901581914225759724372019183597250955590383369045657767937818539417233351342749848619715053719726838642770985578669438576141888192365583900790849407287978559154104879407516411741931948314751633231617377125077253248352448808469959595469287803921155562547281471781692075433595324091570542424279924594985185946086456253242562581068506816013184141305201308065889544737731204487905808157560474627623079448388600176906060149677411431635281519451402485768103899983253241133104967108231479801075927415207716317152021354461008993762797078059672643647314804775938536785685634930857985260157875997872923022313368176730632635810404017537379685881
 . . . . . . . . . . . . . . . . . . . . [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)
							72a110ed445856dd5fda3270e3ccf9890af6586c
 . . . . . . . . . . . . . . . . [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 (13 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '82975.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)
							00f1007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016df7607a6a0000040300473045022025be9856f8b289e67042f4ffa501b153af48ba2c884f571385cd19efe7a5b4d1022100bf9359ce259122f507c506a34e4b04be81f7652d79c19d6af8f58da88036538e0077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016df7607b8700000403004830460221008439eb3ec9d289a43787888d74627c8d38b9f3bddddeefa1c0c11b868869ce75022100d62fe66d1ef5fc531348e67338b8c875ceba8a90a58e7bfecf6cfa9377d6ca90
 . . . . [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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