starytarg.pl

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:9e:91:ce:d0:1a:6b:9d:36:9b:65:c3:ce:c1:65:89:10:e0 was issued on by Let's Encrypt.

With 9 subject alternative names this certificate can be used to secure multiple fqdn's. 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=starytarg.pl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:9e:91:ce:d0:1a:6b:9d:36:9b:65:c3:ce:c1:65:89:10:e0
Serial Number (int): 315295283662165122883344668503730362585312
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 01:7e:d4:c0:27:05:2b:4f:18:98:cd:e9:89:08:ab:85:75:61:ab:bf
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 98:16:fa:e1:89:c5:70:fc:4d:3e:34:92:bc:c4:64:b5:2c:d0:c1:c4
Fingerprint (sha256): a3:73:eb:50:11:ac:d6:a1:69:6d:4c:47:94:9a:19:4f:ef:9e:1d:be:20:14:1d:42:87:5f:36:4c:d0:a9:71:12

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 starytarg.pl

9

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for starytarg.pl

Public Key Algorithm

RSA

Key Size

2048

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

autodiscover.starytarg.pl
cpanel.starytarg.pl
mail.starytarg.pl
starytarg.pl
starytarg.pl.computerservice.netstrefa.pl
webdisk.starytarg.pl
webmail.starytarg.pl
www.starytarg.pl
www.starytarg.pl.computerservice.netstrefa.pl

Other certificates including the domain name starytarg.pl

(limited to 100 certificates)

Certificate

The complete raw certificate details for starytarg.pl in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6fvkC4dB0xPV4fbRncH3
mO7w90uo1oXoov+Jx8lzXQbMzXNIlGeIPn9xqZWouXhNPba6SX4aOYIIpU0tEkCC
K5tPTyvoODMpe4H8Ol89q5vKKcIikG713SZxelYJKkCZ1EIrRitAvI2DE80IMXN3
iQWU7miDjgDNg6Am8gT1ET355ZeqiJMRTnaknRSY1zNlNS7bWDYZZoMRUpXOpRFh
iCHo3d7zdGadXh5K491Q8xosNVw4eQ20wDEhHAEbdXDD2Rxwc10S9+C9xSz9l0dd
P5/vRwGhCnsWekg4IISdFfXsJEZPzVSiWt9G0cov1eVmv8Qxbcwjfh82Ay3eb4WV
YwIDAQAB
-----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 315295283662165122883344668503730362585312
 . . . . . . . . [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 2019-11-27 02:15:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-25 02:15:22 +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 'starytarg.pl'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 29537737040463724343328647858415054564540580699058547528343166685627481939069699195008075899820702764267722282171228310964346233473317691862633224603287254614705372545364431085511456358433062449150293088284357891134100019126725079105646754523305256648586080608880054593045875412779717943618996346375894532163021357154124451049834177708003348812529113832325281667852734960209713218167679848270775947335019372693994643378343908021528302559593021485089012098966808407585773279306543550736094703988605107134917535571291223573919029995331008675552688060211928115222968386410306705821209252613954763966279815982635683255651
 . . . . . . . . . . . . . . . . . . . . [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)
							017ed4c027052b4f1898cde98908ab857561abbf
 . . . . . . . . . . . . . . . . [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 (236 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.starytarg.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpanel.starytarg.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.starytarg.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'starytarg.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'starytarg.pl.computerservice.netstrefa.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webdisk.starytarg.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.starytarg.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.starytarg.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.starytarg.pl.computerservice.netstrefa.pl'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016eaadb3a380000040300473045022055f0c0f699b8fe4d7702e91fbfada08b1c79dc5212c85dd2b542d9cafd20e935022100a11d27dcbf99c1b797d41327313f3e7afe1b81ea3a7c91a1c6e49a4729939c49007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016eaadb3a3a0000040300473045022067a8a6d787a8f91a4f46346c9f2c4e79db3f0be8639e1a4c89a8db860a8b4c83022100a7593abbe31029dd010eccf933e3f415e9208a746e193414dae09c7264f1ce82
 . . . . [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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