DV SSL/TLS Certificate for klufsport.pl

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the klufsport.pl DV SSL/TLS Certificate

This certificate with serial number 05:14:07:4d:85:84:07:3a:ba:65:55:05:16:ac:94:93:b7:24 for klufsport.pl was issued on by Let's Encrypt.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for klufsport.pl provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:14:07:4d:85:84:07:3a:ba:65:55:05:16:ac:94:93:b7:24
Serial Number (int): 442376784108069436225775472463240680945444
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 0e:12:8d:fb:6a:e7:1b:0c:c4:69:1b:1f:3b:0c:8f:56:8c:5c:50:bd
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): 38:08:5d:5a:4a:a1:87:83:50:63:d2:52:be:e1:52:72:8e:2b:ef:2b
Fingerprint (SHA-256): 11:c8:82:dc:2a:b6:77:83:06:5b:0a:43:cb:be:a6:96:7f:cd:01:1b:68:8b:ef:b3:d6:2e:eb:1b:1e:35:96:13

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/37.crl

Check the revocation status for certificate klufsport.pl
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for klufsport.pl

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Key Encipherment
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for klufsport.pl in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAq1Sp5F+hJ6+2FkVaKDk0
EMb9Y6uQw3KR2pKMlEm2QAAPcVs16ZjI2kKuV9lO/pl6tEZuiQtckTIPEKPWUlIF
jc2JchA/IvU8KwYE5qaU0ivJK0sifQBAlK/ANE7q1Z2YFnmZD1AKgvyVJHPSNF26
kOsAJ4tjen/R74B6NVwCdluSVjwKfAmTxJbiNJMuCgsw/UkGkzINhqeCHAmIQ5MW
XLKitlEIWcReFoJz0jUlkweb/Sn6NOORD7YqEufT2xMCeIs/wpnCkHO481qGOJno
5z1b48VD37hCb+X/C0vvmWSlxSeZmkudBlYRCqi9Cm2NAA8ZyvHLmKv+GISny6x1
qQIDAQAB
-----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 442376784108069436225775472463240680945444
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-07-14 01:35:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-10-12 01:35:56 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'klufsport.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
 . . . . . . . . . . . . . . . . [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 21628499346564272247839482430144231236552975447058531073059261296775480362827046159797960631413823636334256193790910936711757020127923769313477869820505878992135124697698423062793206582373199448751823928512496843315336129713208209361391586518445451647174431947846617778578680016063873484156469582651364482945300730231406917663632542074911772494519744096773569036973407669470597442480851136621703542416525588983111050783200846114572270961902285294808441534088478759349055959782175044548752568647829868775472689189462397951074176003698597880488035104066175817941867320732357114008127144169919160672732781931090326353321
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:14|false]  [141 251 106 231 27 12 196 105 27 31 59 12 143 86 140 92 80 189]
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.klufsport.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'klufsport.pl'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (12 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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.c.lencr.org/37.crl'
 . . . . . . . . . . . . . . . . [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)
							00f0007500ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db00000019806c89c5a000004030046304402204b447d862be5da0bce1568e376b9dc435315ddeb4f61c52af49de1e05ad01679022077c9d2b17efb8eecc85df7e65eb2291edf5b5fe1d938c2b9d6318fa9a7d514630077001a04ff49d0541d40aff6a0c3bff1d8c4672f4eecee234068986b17402edc897d0000019806c89c780000040300483046022100b85d3d17e8547240bc20eba65a38ec1f51ed1da5f682cec9a9f48cffd3b67d30022100fa8f67b3d0ade307fe99aae23b9dcae9eacad4bf3547c9ac3d46d6413f507a36
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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