blackboard.agency

Issued by R3

About this certificate

This digital certificate with serial number 03:ed:9f:9d:65:9f:f7:9f:fe:1a:90:cd:0e:79:e8:c4:6c:39 was issued on by Let's Encrypt.

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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=blackboard.agency

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ed:9f:9d:65:9f:f7:9f:fe:1a:90:cd:0e:79:e8:c4:6c:39
Serial Number (int): 342195943258677031397609934540129760996409
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f6:d0:85:08:78:8f:e3:38:0a:19:e1:c6:27:06:4d:74:71:e0:54:56
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d9:94:90:dd:42:7c:e3:bc:75:10:0e:44:ff:fa:2a:f0:31:77:c5:6a
Fingerprint (sha256): ce:70:a9:ac:b1:54:91:72:50:b3:bf:09:3b:bf:ea:6a:04:ec:5f:07:88:af:3b:bd:e2:1f:bd:4d:e9:dd:72:84

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

Revocation information

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

Check the revocation status for certificate blackboard.agency

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for blackboard.agency

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

blackboard.agency

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Certificate

The complete raw certificate details for blackboard.agency in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxJaZe/u0IPfl4Zbc7uAi
XF5XSlDgBwGkcunAX+UF3uEPJVPjr7vpnhPoLpvkydht2upc2c6Oq3O/NV+uCVGh
IgdW6Yc5uPArZKuDs7HtqObWbCbeJrUU06aIlwexhascCv3RUeY9aRLYaZY/87LV
Q9vQg1vvbahSuflRV47ES9NceVqIQxFPFdKB/G7hBhp0cNRHgVcLRWcdxv0cpT2q
hw8OrwcEp9FitWdj01AVbjCqAuRW91m38DfvLzA3KVkcuHBkfADagHB7nThXGqhy
yFx1pagEqHHb2uVsZz6aSI8aMiXgODRdeWNOoPs9kAE7YSGX/sNJcqH+K7EFEawc
XwIDAQAB
-----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 342195943258677031397609934540129760996409
 . . . . . . . . [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 2023-07-28 00:10:41 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-26 00:10:40 +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 'blackboard.agency'
 . . . . . . . . [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 24816971178342600541278345578465166143588774012405974378224892580405611570319735737933040529352317289955245596455623432249070584653160192175775644882915699745524817277945532422627680359096905089945635315264669589649892857487686639787568589623432214964231965153284675468559004908102786118963316711076824283272625416042606061315683926500381723635216860889602213765740565054195600040400929789419640506233288882371652236845853252447983021247945160111954416353862026538877442313681259481895965604358813042139162682860535518132703909363352079792665856441992157419052700679905636477040679153135366266653411880519627988278367
 . . . . . . . . . . . . . . . . . . . . [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)
							f6d08508788fe3380a19e1c627064d7471e05456
 . . . . . . . . . . . . . . . . [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 (21 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'blackboard.agency'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb499000001899a0c40f90000040300463044022014478cb64f835642b8ea0333ffbff75e22b67d7a51791fedbf62d03a3b4dbca102205f5196ef6311de3caa351efbf01e74415470bf68f4395bd77d6e0a064a864feb0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb52000001899a0c4100000004030046304402206501c6b6815bcbd105b3d65b39834a361d24403441f999d5736ef27b23ae05900220020180ee7b7bf2cea5a7d3d6a53093d8e798114d5419b0b94403ac25de3d2343
 . . . . [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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