DV SSL/TLS Certificate for rkibbw.de

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the rkibbw.de DV SSL/TLS Certificate

This certificate with serial number 06:74:b9:99:10:62:ed:08:14:7b:7f:db:f1:4a:6b:d7:7f:18 for rkibbw.de 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 rkibbw.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): 06:74:b9:99:10:62:ed:08:14:7b:7f:db:f1:4a:6b:d7:7f:18
Serial Number (int): 562393172086386178206893560916239652978456
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 2e:47:b2:fc:df:8a:ec:96:46:e8:38:e6:77:cd:93:b1:5a:b8:86:3a
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): 75:d1:ba:8e:5a:e2:37:e3:8d:34:c9:e6:1c:7f:1e:34:f1:65:04:f5
Fingerprint (SHA-256): c8:eb:03:60:f8:6d:3a:0f:a4:e5:c1:3c:de:a4:c5:df:e9:8f:18:7e:a3:8b:a6:cc:b0:bd:72:01:d5:35:a4:4a

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/25.crl

Check the revocation status for certificate rkibbw.de
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for rkibbw.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

X.509 Certificate

The complete raw X.509 certificate details for rkibbw.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6lGKwgahaNCs95NmcxiP
Wy2TOg0/XX0pH1DqQidsdR8Yav6Jkh44oA/yZTJN5wiEVuoMZkEtTPRJFmvYprFL
vIHpGe/UaoYxE/jgVr3L3KrX0TaLOMvYhdhdnecqs1m+T4X9XZV1djJmfRCfu4xg
J9RdDJNHTotJcKSgqMWeekv4Yf9ga/0wO8KPKoLFqmF8ziqgbPCfplzprPXOmDGt
0B1HW7hOz1yHmolwRrtWDj2KcTaJc0RkwQo6+iyo1ANtlBs0X9QoAmd6juvPnblp
9XS00AHtvCa869rFl8BawyqrjARDTwizpmLAujGFm581GoU3Na879CYgtq7gMaHb
5QIDAQAB
-----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 562393172086386178206893560916239652978456
 . . . . . . . . [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 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-09 00:23:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-07 00:23:33 +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 'rkibbw.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 29579973232290856026308749132276208009135579239376911585897554828106284505738301458921987948161175140375267863748155007507270265501976553389925767548232462421609932497813601641544704166024451993789576163990696498820443406399793174383170742983354502124921668517784260071499495693740209004724235963687885611749449060614601908377914389501518961328758047222632411618921429989667397510705553208930710119152598581035660790847939253614815236376949593797292622248228071794663491138856334073904036051532564114377707924387597512078443345465607397158192361194894120277446628763014676979516006006573926643503290380143485132069861
 . . . . . . . . . . . . . . . . . . . . [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)
							2e47b2fcdf8aec9646e838e677cd93b15ab8863a
 . . . . . . . . . . . . . . . . [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 bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [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://r10.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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'rkibbw.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.rkibbw.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 (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://r10.c.lencr.org/25.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a8454000001975247c680000004030046304402200f3ac4613d8465fcab8e19fdbfdbf55fe25668b2d1a2a1868c41683ceb30fd95022025dc19d597cd4c9c27af3ec18ac1fe9ea2ce9d409c721d3f7e1e12cd2e2147e00076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa34000001975247ce4e0000040300473045022100843c87fa13c5155f8ee44ae2689ef597771c8fdc84dffa36758f362943a252b202207c3472c05c52eca8f268f08b6a6e2834d7a31bdc515700f2cfcfbed678ff9fae
 . . . . [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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