klopotek.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:82:d4:f1:bd:a1:75:4e:0a:46:1c:f4:17:96:af:a4:fe:7d was issued on by Let's Encrypt.

With 2 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=klopotek.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:82:d4:f1:bd:a1:75:4e:0a:46:1c:f4:17:96:af:a4:fe:7d
Serial Number (int): 305856617019819502594466799445149583998589
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 80:86:c1:36:1a:19:dc:1d:8e:56:ea:74:d0:65:02:aa:e2:ec:90:aa
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 93:9d:3c:be:8c:0e:3a:6f:27:53:55:80:2b:f9:c3:74:ae:fb:27:34
Fingerprint (sha256): 56:f4:54:1d:c8:06:81:69:d8:a7:4e:84:02:b4:ea:60:c4:fb:00:13:dc:2b:8c:ad:f0:80:59:7a:f1:1d:a2:3c

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 klopotek.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for klopotek.com

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

klopotek.com
www.klopotek.com

Other certificates including the domain name klopotek.com

(limited to 100 certificates)
klopotek.com
webmail.klopotek.de
klopotek.com
*.klopotek.com
klopotek.com
www.klopotek.com
klopotek.com
klopotek.com
klopotek.com
webmail.klopotek.de
klopotek.com
klopotek.com
asp-citrix.klopotek.com
www.klopotek.com
klopotek.com
*.klopotek.com
saas.klopotek.de
klopotek.com
*.klopotek.com
klopotek.com
klopotek.com
www.klopotek.com
sip.klopotek.com
saas.klopotek.de
*.klopotek.com
klopotek.com
autodiscover.klopotek.com
*.klopotek.com
klopotek.com
klopotek.com
mail.klopotek.com
klopotek.com
*.stream.klopotek.com
klopotek.com
klopotek.com
*.klopotek.com
klopotek.com
klopotek.com
*.klopotek.com
*.klopotek.com
klopotek.com
klopotek.com
klopotek.com
klopotek.com
klopotek.com
klopotek.com
klopotek.com
klopotek.com
klopotek.com
www.klopotek.com

Certificate

The complete raw certificate details for klopotek.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxGPoZmlO85qXB6gIQeBF
biTSnLknADguoLGHm9lKaDo7PaWdFpMAMgFGpL6u0mJuBu46Hc+fIdZa805RG77V
FzuaHGyD32ScmoNDTzoy3PFOF7Y2/RyURUOhk6f/RjfKsUm2teS/iRyWJp4As94y
yH6H0/AM8V6C5z4msccM7vv5CQVUIObxcdVuZGpCjDSi0A4lMbU9eFDxWl734zuF
pLfJXul+u6BguEHpOYwMPdg/6kL1eocxWKFzv5VUBNp/jklRGn8DbOytrr8qqOy7
4Oe0ZYL+XjJ05qdDXgsw6Ui+T0+ZxMlTRY9KQO5OZ63CLBBJQl4oe2ZaG2lGyRne
VwIDAQAB
-----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 305856617019819502594466799445149583998589
 . . . . . . . . [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 2020-03-14 00:20:02 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-12 00:20:02 +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 'klopotek.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 24791974151959797668599968868568904359629675918072614013975096520068960644585140734663214576327250009082539295808767766362604528437272132731437626231721900579018223667059206005179844844520628243185437794244574410226861094354422862499535007873996340729444637299799822493933020290883973088083045604324014628172620978678220550323854731706334522859196683708375049025475070841954748334401327111057157134795010654243877763656033786735939841312705577118146795099363391013500290140812223057282045151695755527042576532694577219877433985788895328150093094359855993056393238991407194122205023732692505134945692486092950664240727
 . . . . . . . . . . . . . . . . . . . . [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)
							8086c1361a19dc1d8e56ea74d06502aae2ec90aa
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'klopotek.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.klopotek.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)
							00f1007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb27300000170d6a06e1b000004030048304602210098c0b2a0a8299e0a3e56d7c2dfa4a8c22987b5f4798625058e7e4b94e374ed8e022100b9fbbc256236cfc24b29d72f2489ab172c2bf2790b234f882e4385824c8f553700760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000170d6a06e400000040300473045022100b496d0dfb29c5f23169d6ed31e2be9284a085f0208dbb71830e6682ecbf46d7b022065bca57066cdadc44816106278b358bed2a41183685371e650d62441c41be79f
 . . . . [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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