klmn.ch

Issued by R3

About this certificate

This digital certificate with serial number 04:ff:7c:a6:6c:bb:9d:df:ae:25:0c:5f:e9:80:93:ae:4a:40 was issued on by Let's Encrypt.

With 4 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • 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)

Certificate Subject

CN=klmn.ch

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:ff:7c:a6:6c:bb:9d:df:ae:25:0c:5f:e9:80:93:ae:4a:40
Serial Number (int): 435386835690000904263205282435523769420352
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: a1:48:c8:b7:f3:f6:52:67:da:e1:6a:6d:ca:3c:5f:be:98:2f:9b:d7
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 13:7c:5b:22:fe:85:d5:16:53:d4:59:3b:b9:05:a7:2e:bd:8c:fa:75
Fingerprint (sha256): c4:8d:44:a6:86:5f:25:ad:a2:8a:de:2b:33:0e:0d:a1:56:21:33:c5:1d:f6:dd:06:bf:74:65:be:1e:3e:08:5e

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate klmn.ch

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for klmn.ch

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

jklmn.ch
klmn.ch
www.jklmn.ch
www.klmn.ch

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Certificate

The complete raw certificate details for klmn.ch in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAn//ERv5AxubOoW4wBa1K
0M0iH3rYAscNWyTkkgXRegjGCaf2Mr8mYyKEt1zcOazqMHjQc9rn3zlStYyoeYl6
isOFb2OeZGmp3cdCqhGQssJ1ROgNsiVuBPdQkPyOBK4uEWpTXVDhhZkbxySZodRs
Qf4ghxA8odEDHwnrB1icpDzfRo++2BRMbXKsSyrL/rjRAlR11gxrsC0qccEUPxEs
PNa6FkME61T5oPY9zeMtqpP+wcdfags/XDocZ+UhewCfjtygKlKIrqlrHbE7zTEF
rTRgvwUHpYAK5SVw0nSV6lCkIR4Um3yWYsuaHwMSzCQqopA5gPlbgF/TP00svT/2
XwIDAQAB
-----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 435386835690000904263205282435523769420352
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-29 20:23:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-27 20:23:13 +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 'klmn.ch'
 . . . . . . . . [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 20198013754129649477804776057843779613896151801152671180699864494693791954972118565253450521207167219596146655264418795677514426394078350521302463930962953416089134744219592777881895907036847558199231533648250594051890976460330646258325845383773280774111118221926103828329691510312573072101004420162472754669592787188044227558021133740051635172746603256264759633292120941122589975578607816043016005345312316720417311183393171654388569575704591724380302831312251269848889138237556773056593351067289843957483345566681434937991771172129798771574483467798585198120156586960081659622499760619620114020400740592985409844831
 . . . . . . . . . . . . . . . . . . . . [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)
							a148c8b7f3f65267dae16a6dca3c5fbe982f9bd7
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (48 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'jklmn.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'klmn.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.jklmn.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.klmn.ch'
 . . . . . . . . . . . . . . . . [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 (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 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c1cf6f07a000004030046304402203b08b15b603497152da05427b0544414ffc9bd99bc6aa2c3ddf536916dd98a8b022062ab8422063b1b9f89bdcbca21786e04eb20ae599c3969e165a0f43e0d99f052007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c1cf6f08300000403004630440220537e79c0bae0ed449a9d96018499105d16c1b50f8116e3ee8acf90c44047336d022061e3587c5a62d81196b280298487a6819b2957637de21e6e7a2ea1bc3b95c1bd
 . . . . [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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