zer0.de

Issued by R3

About this certificate

This digital certificate with serial number 04:9f:3d:78:c5:ba:ac:8d:99:1b:88:3a:1c:7b:c9:7e:cc:3b was issued on by Let's Encrypt.

With 9 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=zer0.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:9f:3d:78:c5:ba:ac:8d:99:1b:88:3a:1c:7b:c9:7e:cc:3b
Serial Number (int): 402635750061260639075026743965262045695035
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 47:29:89:c6:bd:67:a9:91:74:bb:77:8a:29:77:2a:2c:6b:65:84:79
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): e7:41:09:17:1e:8a:46:8c:08:f5:46:b9:69:8e:94:b2:89:8f:77:2e
Fingerprint (sha256): c5:2e:a2:1d:9e:38:71:fa:25:c9:38:2a:7b:a3:87:ab:54:a3:a2:c2:8e:56:4e:41:e1:55:4f:01:e0:ef:26:c0

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

Revocation information

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

Check the revocation status for certificate zer0.de

9

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for zer0.de

Public Key Algorithm

ECDSA

Key Size

256

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature

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

adrian.photo
cloud.zer0.de
stachow.ski
www.adrian.photo
www.stachow.ski
www.zer0.de
www.zer0zone.com
zer0.de
zer0zone.com

Other certificates including the domain name zer0.de

(limited to 100 certificates)
cloud.zer0.de
zer0.de
zer0.de
groupware.zer0.de
cloud.zer0.de
idmdev.marum.de
zer0.de
zer0.de
groupware.zer0.de
zer0.de
zer0.de
idmdev.marum.de
groupware.zer0.de
zer0.de
groupware.zer0.de
nas.zer0.de
zer0.de
nas.zer0.de
zer0.de
zer0.de
zer0.de
cloud.zer0.de
idmdev.marum.de
zer0.de
nas.zer0.de
zer0.de
groupware.zer0.de
www.zer0.de
groupware.zer0.de
groupware.zer0.de
idmdev.marum.de
zer0.de
cloud.zer0.de
zer0.de
zer0.de
zer0.de
groupware.zer0.de
zer0.de
zer0.de
zer0.de
groupware.zer0.de
zer0.de
www.zer0.de
cloud.zer0.de
groupware.zer0.de
zer0.de
imap.zer0.de
zer0.de
zer0.de
zer0.de
cloud.zer0.de
zer0.de
cloud.zer0.de
zer0.de
cloud.zer0.de
zer0.de
zer0.de
cloud.zer0.de
cloud.zer0.de
idmdev.marum.de
zer0.de
zer0.de
cloud.zer0.de
zer0.de
cloud.zer0.de
cloud.zer0.de
cloud.zer0.de
cloud.zer0.de
zer0.de
cloud.zer0.de
zer0.de
cloud.zer0.de
cloud.zer0.de
zer0.de
cloud.zer0.de
zer0.de
zer0.de
groupware.zer0.de
idmdev.marum.de
zer0.de
idmdev.marum.de
idmdev.marum.de
groupware.zer0.de
autoconfig.zer0.de
zer0.de
zer0.de
zer0.de
cloud.zer0.de
zer0.de
cloud.zer0.de
idmdev.marum.de
zer0.de
idmdev.marum.de
groupware.zer0.de
autoconfig.zer0.de
zer0.de
groupware.zer0.de
cloud.zer0.de
groupware.zer0.de
zer0.de

Certificate

The complete raw certificate details for zer0.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAErP12tnFAV+V74X6BQKv2rwZ/LQT4
W2d1iqVtFhjWjxsd0jVcL5TuT23tX1w/ErEVS4jbR4ObUniTPVxOtaHRjQ==
-----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 402635750061260639075026743965262045695035
 . . . . . . . . [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 2023-11-12 08:06:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-10 08:06:07 +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 'zer0.de'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits)
				0004acfd76b6714057e57be17e8140abf6af067f2d04f85b67758aa56d1618d68f1b1dd2355c2f94ee4f6ded5f5c3f12b1154b88db47839b5278933d5c4eb5a1d18d
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							472989c6bd67a99174bb778a29772a2c6b658479
 . . . . . . . . . . . . . . . . [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 (134 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'adrian.photo'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cloud.zer0.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'stachow.ski'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.adrian.photo'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.stachow.ski'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.zer0.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.zer0zone.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'zer0.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'zer0zone.com'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018bc2c80060000004030047304502202350164924f4d7b963996b0b953d2ac5cd41f12512447aaf34ef11215010e232022100a92e28378c11938bdb5683f5b347f5fdbccc8cb309f856403140782633c8b9e400750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018bc2c8008d000004030046304402206ca3cbe19e2a62cc810832dc740a99a5407106b4665155594b087f3bcffd34aa02204d40c1971ff0545f0b7c11b24e903172a2486fc266da00de3b8646fdc913508c
 . . . . [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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