www.1996.info

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:53:ca:a0:7d:3b:d4:d5:b5:ef:89:69:29:5a:51:27:0d:47 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.1996.info

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:53:ca:a0:7d:3b:d4:d5:b5:ef:89:69:29:5a:51:27:0d:47
Serial Number (int): 376961917544166328859951933038312087293255
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: f0:ce:e0:24:5b:48:a8:0f:f2:d3:d2:5d:b2:e9:ae:93:9d:dc:b4:e9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a3:a2:bb:01:af:13:e9:42:6d:9c:2e:e6:ed:26:2a:69:3f:24:cf:e4
Fingerprint (sha256): 08:bf:7e:11:ef:6a:27:86:9a:14:af:2b:16:69:20:3b:2b:1b:76:d3:f0:53:d4:2d:9a:6a:5f:bc:14:8e:8d:bd

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.1996.info

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.1996.info

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.1996.info

Other certificates including the domain name 1996.info

(limited to 100 certificates)
1996.info
www.1996.info
1996.info
www.prooxysite.com
www.1996.info
1996.info
www.1996.info
1996.info
1996.info
www.1996.info
1996.info

Certificate

The complete raw certificate details for www.1996.info 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 376961917544166328859951933038312087293255
 . . . . . . . . [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 2019-09-28 13:57:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-27 13:57:54 +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.1996.info'
 . . . . . . . . [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 801548099659102987131881817223401451982501288694179652925715787725704500040889447218963343513909368633773385281167769518691102417058974893576759040430248147542693622851914763773426568625852155146950820035248764365118661644945775502907726929377694498394740170802100240246352931556266997943040464895721584260772570037489813284437303808174389153452876219869652781345736456039088579870516146123173779632882740365412906906186953468036175777471739952831336937847199008135378826347198280409896028170548217268365277909922732506524512651371607282095235330725270613791641421072028309340232250032099307304940634722073591729709121355923379754849016753860625421041089727359345932146781679382836673269057972404313745887533895537861179492842659926329511942183151870940071527030492229302689594030554174111231250688622131975555619712266065939034128807436398780161718246129247377785283234698705415968743424495071306898055211300513500501303594464367535068387135126191531117324251519031227823664344614171626415219697309780211498681986774699868979525904071404643963749079452542901004604147073022312637132539852085265111945048415295647148086972245187614434286839468798111570146535506481266200483781848758574292514597401277449118743716016566072484327925233
 . . . . . . . . . . . . . . . . . . . . [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)
							f0cee0245b48a80ff2d3d25db2e9ae939ddcb4e9
 . . . . . . . . . . . . . . . . [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.1996.info'
 . . . . . . . . . . . . . . . . [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)
							00f1007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016d7860d1fe0000040300483046022100e912f38496cde1319939a9b5463f3efa44605d7a2a8a2b838ea4ec3c44576af9022100e2580a29412ff767bc86cb792e1e98cf86401548c9ffd6e4871c4661042beca3007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016d7860d3e0000004030047304502200773491537186d9babde8ee896e035b98a90ed56b4412e28cddcf07ec54a086f022100bb6869a681a33e12f4a28a64f8247f7cdd567d2ef4160f62572bd58812dcca7e
 . . . . [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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