www.flunk.de

Issued by R3

About this certificate

This digital certificate with serial number 04:b6:23:4f:83:0d:5c:ee:73:50:78:e6:eb:f9:54:b4:ae:fe was issued on by Let's Encrypt.

With 2 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=www.flunk.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:b6:23:4f:83:0d:5c:ee:73:50:78:e6:eb:f9:54:b4:ae:fe
Serial Number (int): 410427470336010468324623554638795792232190
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: d8:d8:54:e4:97:ac:34:bc:e3:a3:86:bb:80:1e:79:90:43:f5:b8:80
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f5:9c:5f:1e:04:9e:fe:ec:78:9b:55:db:e8:81:bf:52:45:47:cb:26
Fingerprint (sha256): 4d:44:e7:5f:fa:b3:fb:80:bd:ea:1f:52:5f:80:85:be:4b:f4:bd:69:92:49:f3:42:a1:1b:8f:81:15:53:9a:9a

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

Revocation information

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

Check the revocation status for certificate www.flunk.de

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.flunk.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

flunk.de
www.flunk.de

Other certificates including the domain name flunk.de

(limited to 100 certificates)
grossehunderassen.de
flunk.de
spulen.t6a.de
www.flunk.de
kinderbibel.t6a.de
www.flunk.de
flunk.de
www.frucht-shakes.de
flunk.de
www.versicherungenkredite.de
www.flunk.de
www.flunk.de
geotextilvlies.de
www.flunk.de

Certificate

The complete raw certificate details for www.flunk.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnDYTf055L0WxYw+bdX0e
p4KRXWD1sSrGhBX1A/aAsUkrtc2MuSetaA1A+YNW04Zhb2cgfvfUVZ3weE6BYP0C
YS0PGY8j/gR907nsJUtxXio7xhfWdhx68k7iqNeLCzw+tOOIO0SexZC72s+30t3h
XdDP1nlE/s0D32ovI1ZORwmtzL0sD5hMQSb6hw2cTTuFSW3EoYO7SYWdBMIVwcHv
cp7T88SAKdlAzNXzAaGKtghTMHQhKIUCOBXc44eu/mjQc0HEdkzBBT7VUcNzRwxZ
b/iQsAyjwhlGyuZbtsxEV10pBIORSDWdUfv3vDDMABbMF4SQ181BjgT54dNUB9Uk
rwIDAQAB
-----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 410427470336010468324623554638795792232190
 . . . . . . . . [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 2024-01-01 00:40:31 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-31 00:40:30 +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 'www.flunk.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 (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 19719841523692542845129974551371806413904581455776846631405843047279718136882887615066081311115057341455224543635727722526900345008889444428196894458486750475737240828391230561485517323062897487940744786773572284531525528218306434936735489182879493729182563963930616970510384600427744297928465185350806867879550381063696812732039774008792004729958531634568007171815168871019336106457488833069058108190960225920085312283165991694760334192950296358176884662005310173775402642578512005999463247486125890651195899049741679428854457509820507862093796431578745932275469831059616976009263560728997819456565287837830906979503
 . . . . . . . . . . . . . . . . . . . . [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)
							d8d854e497ac34bce3a386bb801e799043f5b880
 . . . . . . . . . . . . . . . . [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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'flunk.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.flunk.de'
 . . . . . . . . . . . . . . . . [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)
							00ee00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018cc2adfbde000004030046304402207d5fa8ee13753f86ce68c73fb8d1ed6127bbb43fb3fbcca04589b32c5b7377d1022061bb905d75f612380064ec2938ec7679d37e5c32405ebdd8d2538f44ddbeeec5007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018cc2adfbeb000004030046304402205549dc6c13db79e2f47a5f691aa3ce09f1640e8334f56af9a3e6529e01c5145802204ceb7b26da8509ba5dd59d843d6b7a6f71ab495c36c2489f32dd3f391aa773ec
 . . . . [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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