DV SSL/TLS Certificate for klopotek.it

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the klopotek.it DV SSL/TLS Certificate

This certificate with serial number 06:91:01:a2:78:7e:c6:73:80:44:f6:d9:09:03:8a:a8:93:00 for klopotek.it 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 klopotek.it 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): 06:91:01:a2:78:7e:c6:73:80:44:f6:d9:09:03:8a:a8:93:00
Serial Number (int): 572016831618117743219028155919128196584192
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 6f:2f:15:87:af:5b:2a:b6:c2:2b:a7:78:64:e4:dd:5e:bc:a4:25:c3
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): 00:7f:c4:fc:91:3c:72:d0:d0:2c:87:a2:6e:3b:a0:64:b0:7b:31:be
Fingerprint (SHA-256): b0:c8:5d:83:42:aa:d2:bf:68:8f:25:d4:d7:5f:b3:16:9d:fe:1d:a8:12:17:cd:e9:c2:a4:66:f8:12:6a:bd:cb

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

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/1.crl

Check the revocation status for certificate klopotek.it
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for klopotek.it

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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for klopotek.it in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsEJCUftVa+1B45nBzA+G
NIlkHGK78Gl6oHUW7hSZcrLaaUYdgmBCX57LjtBdVTqUDf5gAgBe5wokahkM5OCl
HF9D5ZzRU/rfp7wbfCLltUhMLLVJDTwvCLTNLaiLwqMhAapINy+e56ZZZ9y/yPG+
eEfmugYuXJiNxPukM5v5LvtT65xFgK6aoXbPQ2XF94N7G8ANefQB0atFohR9yB/1
4jvzBi13AsbSnUuiKgqoHkZJsu8syaFc9ZISgbScXRHcdeuIGGK/fIkrjJ1fTIPL
lac8+4PNN7QKfKOkXgY/oZiZQOMepWQDWgGC51pgz8N/EJlbIpB9S5/GWRd9IcD+
fwIDAQAB
-----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 572016831618117743219028155919128196584192
 . . . . . . . . [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 2025-05-17 18:51:23 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-15 18:51:22 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'klopotek.it'
 . . . . . . . . [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 22250615235970178492577984815767002185247850922977839732360385624007468011623880783539436596147945458540102003357416503870105261062227156863667151640250350704466469127972996593462068187250420025192693765310659836523085521142225982401712292147363560764927543857078315384304387304272330405782985997055446081828137414743635072761002888812334576760595884726442302042532023131744074048720843342663884297650927439375729147093813692744914231230708386683584875940191389315051872338255861289788525070753471287242154907801845450471467004457636498417470633142000394059791526916145836255983337922058560194938986070351782049021567
 . . . . . . . . . . . . . . . . . . . . [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)
							6f2f1587af5b2ab6c22ba77864e4dd5ebca425c3
 . . . . . . . . . . . . . . . . [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 'klopotek.it'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.klopotek.it'
 . . . . . . . . . . . . . . . . [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 (38 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/1.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a00000196dfcbbc470000040300483046022100f137294cf7d5b66114c479192de81570b36fd9f55bdd50a3d03fe27eb0b64468022100809912b60717b951cde32e60bb4bd168b5810eb7965e05035d19794476f08343007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000196dfcbd3970000040300473045022100ee16b728066d6c448ed708524c063f9e96a83e19c6e14c42cff07a90ebb513b202200c05c9a736f4510e451cd2bb67b9e70c05cc094a1cf96f6ed4d033eaea32104f
 . . . . [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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