ontohub.org

Issued by R3

About this certificate

This digital certificate with serial number 04:2d:4d:56:4b:73:b7:99:c7:1a:ac:c4:13:3e:b4:13:2b:78 was issued on by Let's Encrypt.

With 6 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=ontohub.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:2d:4d:56:4b:73:b7:99:c7:1a:ac:c4:13:3e:b4:13:2b:78
Serial Number (int): 363864648862037270585443484449433718041464
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: ed:bf:38:b7:00:07:15:2e:eb:a3:24:c5:97:21:2b:73:34:0b:f4:d7
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 19:94:b1:6f:c9:77:8a:90:65:28:30:07:b3:51:b4:02:9f:85:c4:57
Fingerprint (sha256): 06:24:91:0f:01:e8:be:26:ab:a7:9c:3a:c0:30:6e:50:12:c7:8b:e0:84:22:9f:6e:50:ae:ce:5f:30:bc:fb:66

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

Revocation information

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

Check the revocation status for certificate ontohub.org

6

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for ontohub.org

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

model-hub.org
ontohub.org
ta.iks.cs.ovgu.de
ta.iks.cs.uni-magdeburg.de
www.model-hub.org
www.ontohub.org

Other certificates including the domain name ontohub.org

(limited to 100 certificates)
ontohub.org
ontohub.org
develop.ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org
ontohub.org

Certificate

The complete raw certificate details for ontohub.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5hXeu41enRMdv97UHvcz
UzyRZMxjDj/eDe9qaitmtHDQzZpLc3cEck9l5UN3vvQJ2Ekuv7NNDD4NGTiw3Liq
nHue42lOGG1xasQ3YjaUHJ7FaJgGrKJD8WgAlROSU2g0Y6OCUCCG8CDTBMDeBuYY
UH9HLZ9T/OjUVbpEQs/UOIBh5s1D2v+FUwMXGoLpt665VojTakEEbjVBfVMGstcz
PVLkLN9oQvk4oKJgknfFdtzXauUKHyAfknJF/KA5c/Qel1gguFrrT3fH1Fh2+at0
DVzz7kd5MErXnuHztNZQsYggCebRaw0AAH/D7Q1ua4XKskYl90/1SOW+Lf7IiPXd
oQIDAQAB
-----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 363864648862037270585443484449433718041464
 . . . . . . . . [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 2023-12-28 20:33:25 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-27 20:33:24 +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 'ontohub.org'
 . . . . . . . . [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 29045594665457782030125533873710521713665475310382860198588957144028893726618303202725359804712391141039174158695097129929491681017833800442916081304644694794437116425077659270130205548836364658421873853226972984287490570275049453513091427358622833802172920280475598040678831865785916084957695315483861397969176179477260033459930709470455713796818578368080516261202512167980525734063349836670956625032398960344029561546388399959118943297572331722023246200265127569704047509646688589314572567671379573899916699086928043325648215221574171664182552741349142882392255917907376497036019350547182074352855313287499427995041
 . . . . . . . . . . . . . . . . . . . . [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)
							edbf38b70007152eeba324c597212b73340bf4d7
 . . . . . . . . . . . . . . . . [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 (113 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'model-hub.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ontohub.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ta.iks.cs.ovgu.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ta.iks.cs.uni-magdeburg.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.model-hub.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ontohub.org'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018cb258b0c30000040300463044022062557eac06f17e1d1e2af43f75492230dbdff3e4d707d7910441690b0994a1f002207c7d0982cdb254386b6bacca8fde26677980f88ee70b1fd025b3cf101995069b00770076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018cb258b10e0000040300483046022100a2aa3a16da8816f267ff703e521cb6ffd93853d7d9eae3b674a943151a7e1208022100c6a5a9fd8dadb7edc92deb81210ac32b15e8e85738036e2c14f3b4fff2d7190a
 . . . . [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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