virshow.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:13:c3:9e:a2:6d:c6:2c:8e:0c:03:bb:3f:b0:a8:6b:cb:4d 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=virshow.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:13:c3:9e:a2:6d:c6:2c:8e:0c:03:bb:3f:b0:a8:6b:cb:4d
Serial Number (int): 268062245903307835244761147463423325096781
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ba:56:96:89:fd:1f:60:d2:66:ef:05:e7:50:10:ad:e4:c2:51:cf:c9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 99:17:07:a6:08:11:7b:5a:31:8f:03:8d:ee:9d:f3:e2:bd:bc:8d:97
Fingerprint (sha256): ec:aa:cd:6f:10:56:5c:a4:dc:d1:f5:be:89:48:bd:75:23:ca:75:7a:4c:ab:f4:64:64:0d:8c:aa:c9:52:b9:5c

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 virshow.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for virshow.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

virshow.com

Other certificates including the domain name virshow.com

(limited to 100 certificates)
virshow.com
jearny.org
*.virshow.com
medicalcopywriters.com
www.virshow.com
virshow.com
www.virshow.com
virshow.com

Certificate

The complete raw certificate details for virshow.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 268062245903307835244761147463423325096781
 . . . . . . . . [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 2019-12-01 09:42:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-29 09:42:07 +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 'virshow.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 861230149785737534535932823031902050878009967238543953823346580369432337061562579969685961401420391799494008052673576922720080719091978685621381013622855897497478100636620089268739554095678557861783954556456001241735615122646127207953207304352740091870664622220622477709018633414002902085156595295459388613695028033189394923822216476905885597626578343886017613759309467224908065124415352636138167609211888024430722118726622165725598275347608299733478618541914787726218462704870470889756003581154506796194512471217995685288617545296889542832235389734512241708235938094618380003377798116689798402189400538364786984939565841811111390564678005292307370208451971604743213432804201387800055355704740221735453019968144232582610944716153591920904742701790007782983073737208503067350132615135964939441633373428417892659953372910304002278356487007597787792447305826456209671695839419602463443039898090648895254219342559805329293078645931267177596878107032032544876775942334799198525708183286575363456472729435829706636252233948687187310310587039412449133856643745650420728407493000190407314087407160586805014477658357037093455151313197803992099909814296673577113510055504266469483834295843321088247114002048385688728782641499046544726830188639
 . . . . . . . . . . . . . . . . . . . . [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)
							ba569689fd1f60d266ef05e75010ade4c251cfc9
 . . . . . . . . . . . . . . . . [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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'virshow.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)
							00f1007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016ec10da5480000040300483046022100fd2b5fb0ca00232da3b879416d590806fb0e5baae6bb7d6602a2b8e2701d3e76022100fc0232e0ceb1f5bf33b43a9e97495e0d70ce641ea9062e5825f5b7be54c7220800760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ec10da57900000403004730450220585c761ec44be436d4b1755b7fd8b7f9ff8e0c564ba8b02257b76ae4016b339b022100c6ae0be4fbbd06e8520616c525e7b1351fd410b2b267ec454b3e6f453f6a54c2
 . . . . [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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