computingfrontiers.org

Issued by R3

About this certificate

This digital certificate with serial number 04:8d:8e:aa:c5:0f:69:ee:c0:d4:3d:6e:c9:0c:90:a7:d1:7f was issued on by Let's Encrypt.

With 4 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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=computingfrontiers.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:8d:8e:aa:c5:0f:69:ee:c0:d4:3d:6e:c9:0c:90:a7:d1:7f
Serial Number (int): 396618594525616617827559457691554948829567
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 9d:54:78:e0:8c:0b:0e:10:74:f0:75:7f:c0:c1:3c:96:40:94:ec:31
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 50:b3:bc:c6:ae:10:ba:53:62:34:c8:09:be:ae:20:6d:60:0d:1c:e2
Fingerprint (sha256): 6a:45:75:e0:86:20:d0:70:ac:27:d3:e4:f2:45:cd:fe:ef:dc:29:41:38:59:8d:37:bc:f5:41:ce:ec:1b:7f:0a

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

Revocation information

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

Check the revocation status for certificate computingfrontiers.org

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for computingfrontiers.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

cf19.liacs.nl
computingfrontiers.org
ischia.liacs.nl
www.computingfrontiers.org

Other certificates including the domain name computingfrontiers.org

(limited to 100 certificates)
computingfrontiers.org
cf19.liacs.nl
cf19.liacs.nl
computingfrontiers.org
cf19.liacs.nl
cf19.liacs.nl
computingfrontiers.org
cf19.liacs.nl
computingfrontiers.org

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvi7/dyZwArosn6GvSEtx
cmMAX8ll4HMZez+bY4iRPeWAsnEarV28xdS891hrnmPND1vOUe3czIpPU3BtbaPb
GAv96132IkwIKyo+BszrmI/9NSAYH6CaG8cSk9iMO3bhbKtVj6kcJjuQlzFCVe4X
rtnrbNluuct+hVhsbnydAw8/15gpZN1/Hbs1jy7wXecAj4K6ZPQstKUSXu1p6QqH
mrczCnCu1DM1LqVf17mUchU2eGseA8IrocARg9SRDwYJml2J3zNeqnW8ew0I8V9F
WpmdUD25GNcknTPEwtzEfV2+it1xvMIGl1NLANgko766p3VS6kjLEXf3aOAicTIL
GQIDAQAB
-----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 396618594525616617827559457691554948829567
 . . . . . . . . [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 2024-04-24 16:42:47 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-23 16:42:46 +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 'computingfrontiers.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 24008453477641924920207168001915055247967454792939702596392039389478460519227314804902868179759274363314707693112214677759547136764512169390121025488575033171291834883940939545198934169587769428449605621075872442182445747684129710430510671792651163604975639092014892523994910040833161303424994688137578185147908665004158992550516636769458097307329357678581752560738143476974593212644839868739878079562056470490066832480907749448287359123066426649817061483227966575144988248317493934142718044637875163322934324480617472895772147621780667160591841223113913452567179394671373295527240648475961282544222061953095910427417
 . . . . . . . . . . . . . . . . . . . . [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)
							9d5478e08c0b0e1074f0757fc0c13c964094ec31
 . . . . . . . . . . . . . . . . [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 (86 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cf19.liacs.nl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'computingfrontiers.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ischia.liacs.nl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.computingfrontiers.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)
							00f000760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f1133f1f90000040300473045022073c8bfd31bc5f4d80e5f50e345d304eee9897fb2dc677531e0ea62bd9e5f58c6022100da56ab08f7dbde18c041104d9fba30df55d0f3e6b74f8f9cfce09467b82e53a80076003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018f1133f1f4000004030047304502203bd4e7e3ef90164ed24fe8eaba68b3cfbd3060c1c1b140787e842adcb72ebd2a022100d9dd34b681dfe4c6737b59253af86a7bf3255ee7889635f90a69a7a113effde6
 . . . . [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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