prooptik.de

Issued by R3

About this certificate

This digital certificate with serial number 04:74:93:b0:20:3c:2d:38:9a:33:54:40:7b:2e:87:8f:59:65 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=prooptik.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:74:93:b0:20:3c:2d:38:9a:33:54:40:7b:2e:87:8f:59:65
Serial Number (int): 388118209303302125432414999544104009816421
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 32:82:70:28:ef:fa:d2:ad:2d:63:89:d3:cb:07:2e:7d:07:df:c0:d5
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): a6:bc:0e:40:66:46:12:f3:77:a6:08:e7:c1:d7:6a:b8:77:ba:db:99
Fingerprint (sha256): c4:7c:6f:84:9c:bd:18:03:c4:1c:28:bb:c7:c6:6a:91:94:32:c1:b0:e4:2e:be:cf:f7:83:b6:67:66:25:0a:f6

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

Revocation information

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

Check the revocation status for certificate prooptik.de

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for prooptik.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

prooptik.de
www.prooptik.de

Other certificates including the domain name prooptik.de

(limited to 100 certificates)
*.prooptik.de
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www.prooptik.de
sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
prooptik.de
*.prooptik.de
sni196360.cloudflaressl.com
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webmailer.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
www.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
www.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
webmailer.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
www.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
www.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
*.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
*.prooptik.de
prooptik.de
sni196360.cloudflaressl.com
www.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
shop.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
webmailer.prooptik.de
sni196360.cloudflaressl.com
prooptik.de
sni196360.cloudflaressl.com
*.prooptik.de
www.prooptik.de
webmailer.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsh9HaCZRzlfVahdnsDX4
hQV4/OpGnWuUNR09IdySZMUiKIxeXvidr15ZAO0Hr2zByPtsQ1YZ7BS7sVlNmpaX
7JFuDWC7IS84ebQMm9yZncxZW/HcZ2Dkal3WRBPkMfw1UQniSuO75XjK+sZ9HEso
ttiF9NbP5nSnJjXIFgo2CCEHe68vQmf/JI73ytlyf7w4ihzxZaOw4Tfz4nC/2C32
2AOQlvLWM1jpR3dvMRmZRB/WYMz1ixcgBeojvEugSa8htWotU+I3HTi0h6CAFDns
iAc0KNRM0425H9G7EAkym0vAYPM/08gGSasoR7t2sluULZqkI5sRHuLjaPjTTFcb
wwIDAQAB
-----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 388118209303302125432414999544104009816421
 . . . . . . . . [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 2023-12-24 01:52:16 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-23 01:52:15 +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 'prooptik.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 22485842500663565128780886925112304925677611185314634559609032429554600389562889358058297002151460645655527194139730466414939626971788520223918893579943024527309593241728517401908798053512053597939044138404587269333534933703085032447034750311826269521537045699804602393560271854633765742123592882173207511870974260066429085819401158786831078040999659020027607352656039026472325035321614071560032973847025550364808360334291733767017754170969377385707549832342714023791238096235775995967542346751871031390999748197062662349238354262186906117403707303893568823798342893348880674758119435016988002328401491374942876801987
 . . . . . . . . . . . . . . . . . . . . [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)
							32827028effad2ad2d6389d3cb072e7d07dfc0d5
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'prooptik.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.prooptik.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c99bccc8f00000403004730450221008a720445a9cf4ef6484d101d125cfbb93a27fca5e5b2768b4a036f6e46e9d6b802206c47bc8a82726935dc32dd2ecfd92c294358cb9259f8a9e530039b6ba63594ac007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c99bcccf20000040300463044022065ef5aeaf51de2a326fb3bbac7227ab5a5cb7ad7e4c1cc22d78a1d9e7070cb6e022058914cf0b346dc38002c2b1069f7b2b29ad15fc609f4be5a08a1d6f64f8c691b
 . . . . [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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