DV SSL/TLS Certificate for kis.kreis-mettmann.de

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the kis.kreis-mettmann.de DV SSL/TLS Certificate

This certificate with serial number 05:92:1e:f7:63:6f:3c:2f:1e:25:48:04:35:07:e5:15:41:7c for kis.kreis-mettmann.de was issued on by Let's Encrypt.

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 kis.kreis-mettmann.de 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): 05:92:1e:f7:63:6f:3c:2f:1e:25:48:04:35:07:e5:15:41:7c
Serial Number (int): 485283816583227357340443780825254422987132
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 47:00:6f:ff:cc:0d:51:98:5a:94:eb:14:cf:c2:28:ef:f5:84:14:5c
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): 49:01:ad:a8:7e:ba:8a:dc:2f:f8:9a:a9:7b:6d:79:81:08:34:aa:68
Fingerprint (SHA-256): 2e:bd:28:77:f6:82:25:7e:09:f4:50:11:b6:08:ce:da:9d:fd:6d:70:4f:bf:93:c8:f1:83:0e:6a:80:04:1d:6b

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

Revocation Information

OCSP Server: http://r11.o.lencr.org
CRL Distribution Point: http://r11.c.lencr.org/125.crl

Check the revocation status for certificate kis.kreis-mettmann.de
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for kis.kreis-mettmann.de

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

kis.kreis-mettmann.de

X.509 Certificate

The complete raw X.509 certificate details for kis.kreis-mettmann.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0dYYwnCSK75wafTyRyY0
uyFCEPaKdkSTHGCPa54X2YnWbI3e2iEkWNc/4bM5IPY+OpMMxnd4RtMr+lP/SRHf
PoKcWBqz+f5eXFV6DzTeAOrIb0Jagc7WvYF58vWF+m6fWnCw15MyIPUM3T5A/u89
Ja9FnIN3dFis1VgelbfDrYgSvfueUlsXUdL/JT68gi1yKSoiHEIaCxCGPMCN69SI
FWfgWnMqqVMOs7Kak6WqyGMYn85VMkehfK6ZQi3VSzXZS0dNcBjVplsR2vqFHxpe
hdCEi+10sUXjAhyTs69Z8HK9KTpMlCOQTosb3MB2UkgQqNjCAmrkwZO4V9+idIOJ
CwIDAQAB
-----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 485283816583227357340443780825254422987132
 . . . . . . . . [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 2025-05-06 18:51:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-04 18:51:21 +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 'kis.kreis-mettmann.de'
 . . . . . . . . [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 26489380763852058333741273269393709648384031973772949188771782584233419710752830437419345324565496395521979992199522228897488719442968747665425262460524969271013847612696155828113602048067205461369820618153604795937540631116005452691996834507950044890508763454715500017101264748105804096702956812982954935904305085330030758234950659701567644944717370677974493292421229003673421033307487736079359353964550863050228239814971575791062001925559478037160784828696072204280035179204751968465121537924338436050614150576782454354758437721443277630989032673765828627967442924620643052755544227187605454287913963815672251386123
 . . . . . . . . . . . . . . . . . . . . [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)
							47006fffcc0d51985a94eb14cfc228eff584145c
 . . . . . . . . . . . . . . . . [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 (75 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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kis.kreis-mettmann.de'
 . . . . . . . . . . . . . . . . [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 (40 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/125.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)
							00f1007700ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000196a725c4a10000040300483046022100e1b5a87e0cd67f5193d33c88ab5b3132b7ee6109f07b755f3b5c283c8f633069022100f99849692b304bf35c3525809e8417bd0e8f85ae2e221c9c8b691be6f249e45d007600dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a00000196a725c4e00000040300473045022100d4acd84be51717057436f4d050f9cd6ae79d702b919aed0b46f29249309eeea102204261b0350b502acc698d27aa8fd4c16527345abc76315a7a40a1cadfa3f7dedf
 . . . . [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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