discourse.cs50.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:72:03:ef:27:e3:e5:e5:47:a6:5d:b7:4b:f7:6a:48:f9:23 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=discourse.cs50.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:72:03:ef:27:e3:e5:e5:47:a6:5d:b7:4b:f7:6a:48:f9:23
Serial Number (int): 387246563008034432675514097155324881991971
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: d5:c1:4a:fb:bf:c7:37:78:ca:92:84:69:ef:26:63:86:3d:28:ba:fc
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ad:57:28:de:ac:60:b2:1f:5f:f2:b8:4f:89:db:8c:fb:63:d4:97:9f
Fingerprint (sha256): 46:43:ad:b6:c0:08:1f:af:9d:f4:de:3e:24:c7:d9:52:3d:03:76:0a:29:8c:6d:7b:11:d2:43:d6:1b:07:78:01

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate discourse.cs50.net

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for discourse.cs50.net

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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

discourse.cs50.net

Other certificates including the domain name cs50.net

(limited to 100 certificates)
www.3scale.net
www.3scale.net
ssl.smugmug.com
ap.cs50.school
docs.cs50.net
manual.cs50.net
discourse.cs50.net
ap.cs50.school
cs50.net
ap.cs50.school
www.3scale.net
ssl.smugmug.com
www.3scale.net
discourse.cs50.net
discourse.cs50.net
ap.cs50.school
docs.cs50.net
docs.cs50.net
docs.cs50.net
www.3scale.net
ap.cs50.school
ap.cs50.school
www.abphotoshots.us
ssl.smugmug.com
ap.cs50.school
ssl.smugmug.com
ap.cs50.school
ssl.smugmug.com
www.3scale.net
www.3scale.net
cs50.net
docs.cs50.net
cs50.io
docs.cs50.net
www.3scale.net
discourse.cs50.net
www.3scale.net
cs50.net
*.cs50.net
www.3scale.net
docs.cs50.net
ap.cs50.school
ssl.smugmug.com
www.3scale.net
discourse.cs50.net
www.3scale.net
www.3scale.net
manual.cs50.net
docs.cs50.net
ssl.smugmug.com
discourse.cs50.net
ap.cs50.school
ssl.smugmug.com
ap.cs50.school
manual.cs50.net
cs50.net
ap.cs50.school
ssl.smugmug.com
www.3scale.net
cs50.net
www.3scale.net
*.cs50.net
manual.cs50.net
ap.cs50.school
*.cs50.net
discourse.cs50.net
discourse.cs50.net
capture.cs50.net
ap.cs50.school
discourse.cs50.net
cs50.net
www.3scale.net
www.3scale.net
ap.cs50.school
*.cs50.net
www.3scale.net
manual.cs50.net
docs.cs50.net
draw.cs50.net
www.3scale.net
www.3scale.net
www.3scale.net
www.3scale.net
docs.cs50.net
ssl.smugmug.com
ap.cs50.school
docs.cs50.net
cs50.io
www.3scale.net
www.3scale.net
ssl.smugmug.com
cs50.harvard.edu
ssl.smugmug.com
cs50.net
www.3scale.net
discourse.cs50.net
docs.cs50.net
www.3scale.net
docs.cs50.net
ap.cs50.school

Certificate

The complete raw certificate details for discourse.cs50.net in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzkiztFuhbRli/YQD/bwt
IOZaIzULkaEpvrmqFhtRQwVCrbYmHJTyDR7urVsShrzdSqGqngHubqr0V86gb5Hk
QKJHHADAZE/aD0FnAE5fU9rfGuDi9fxE8SF5Q6LCsEMw8NT8ZukP3O2Mc64Zsrlm
plZxXqLdDHjr++tuSuV5VATr/mXto3hgBA8j/kq92X2dAThZqFaV31w276pMgIf6
apU3fJbMnGvcu/rh6ed7lSjOertHCV5QC9Wah0j7dsUSlx6kNvMP9Y3ccvL2yKJb
4ESyqiqeERvbBEhAibN2ijKILDJWNcQUBpKWji3hTzffALhk48G/221s7ksdch5P
2QIDAQAB
-----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 387246563008034432675514097155324881991971
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-01-03 00:00:12 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-04-03 00:00:12 +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 'discourse.cs50.net'
 . . . . . . . . [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 26040941500979485844941331338904691063597925749714654886071862774462633722636869903403406045429710149759530348962897185517369805412502802119782995085318511626446887038139214765536531033316130557665149594470441876574499374282134937332390409271046639280710891675403090146992394544718368489841673259519953937940033267612820455155349385094231037616033171405876987080938712826064504116549325034415974126884009871482366540871017859055199334508005120845415756053041492189015458360822976295248932624536295258900843992803555307959874042385157150002336575039046277344382826294228134384409722518531048991468221638469078319255513
 . . . . . . . . . . . . . . . . . . . . [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)
							d5c14afbbfc73778ca928469ef2663863d28bafc
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'discourse.cs50.net'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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