DV SSL/TLS Certificate for www.cosmos-feuerloescher.de

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the www.cosmos-feuerloescher.de DV SSL/TLS Certificate

This certificate with serial number 06:21:f2:c0:cb:03:11:22:25:f0:31:b0:d8:7d:85:10:41:44 for www.cosmos-feuerloescher.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 www.cosmos-feuerloescher.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): 06:21:f2:c0:cb:03:11:22:25:f0:31:b0:d8:7d:85:10:41:44
Serial Number (int): 534225707912501374058817236105564821406020
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: dc:49:0d:78:cf:cc:9b:08:6c:2e:35:f2:f6:6d:9a:38:c9:84:12:95
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): e7:2f:4a:d7:53:02:df:6d:5c:4b:df:d9:ec:d7:fb:ad:81:d1:86:84
Fingerprint (SHA-256): 4b:d3:a4:dd:b1:ea:c7:45:e3:72:a9:eb:ce:8e:e5:1d:c6:a1:18:6a:09:cc:43:fc:3d:de:75:0e:a6:09:ac:48

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

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/69.crl

Check the revocation status for certificate www.cosmos-feuerloescher.de
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for www.cosmos-feuerloescher.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

www.cosmos-feuerloescher.de

X.509 Certificate

The complete raw X.509 certificate details for www.cosmos-feuerloescher.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzgtiK1NwP229kj7PnNCC
RSCkod911CZFlDQoEpzExbIgjb6f1h2/VBZx45WjZ4LKwm8f7MNVJS+a3GaIn1Sx
FoOkzJ8b7QzwZ/IcACUmIzKwbNvFa2oZd/IHuntyEUU5srupfWc6QcXDTATHLkVI
fb9BwnRjn1vciumQCf+/PysF9qbFArkx40/crSWN+ipdEelp18L0p7bxT1ntS4W+
y8sKXOgPRytnP0xsXO9IllMmvcxVJhiHluGbdPiwD5Vt5aQRSTPrBiD63QFvhF6Q
JvI38YaruiX1rEkDE5bin6ohS5lg+tQttRMJPTQRyIZDeYRu4X6b4ZP3K+3EEgnI
YQIDAQAB
-----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 534225707912501374058817236105564821406020
 . . . . . . . . [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 2025-06-25 21:31:45 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-23 21:31:44 +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 'www.cosmos-feuerloescher.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 26010704223055137380686245537927913264212160673554276324754027103340451834683500183114827280768165173292291824880056535750520991493214234472598592616397522068480583511676826200722116898665740111074516086588726215900469155971529744442661418459313350904150474912794301755536197615463388696310645285666169062033250610708914114824851963062987208644402591832087807524261475267183857858679185150579151346725337996216788485856566678901146212860951517348414444690106539950180245087646504562574577869538182756723203201134825339574398770265406977188121558441228790391731951528782230675615370650986479387108063616936682912860257
 . . . . . . . . . . . . . . . . . . . . [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)
							dc490d78cfcc9b086c2e35f2f66d9a38c9841295
 . . . . . . . . . . . . . . . . [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 (31 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cosmos-feuerloescher.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://r11.c.lencr.org/69.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)
							00f10076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa3400000197a93692ce0000040300473045022052ca40cf1c3e7fd8d99c5ebb5ebaef05d2d07f1f90b9fc7da8bbf6b3d622c4e1022100b954e75682ee33ada06d370a7083b2bc9221f656da5778af0b542904f429270a0077001a04ff49d0541d40aff6a0c3bff1d8c4672f4eecee234068986b17402edc897d00000197a93692ee0000040300483046022100d5eb373ce0c73bb571929f0895cdc37d625d1049064287186e2d59b675d252b6022100e37125bb857a2d2933451cb11bb83aa276e323e87de34e257563cb93df01faee
 . . . . [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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