cs50.net

Issued by Amazon

About this certificate

This digital certificate with serial number 02:42:07:03:76:8a:51:99:27:ec:23:03:6e:4f:db:e0 was issued on by Amazon.

With 4 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=cs50.net

Amazon

Organization: Amazon
Organization unit: Server CA 1B
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 02:42:07:03:76:8a:51:99:27:ec:23:03:6e:4f:db:e0
Serial Number (int): 3001289835471291732715812703762897888
Serial Number lenght: 122 bits, 16 octets

SubjectKeyId: 2f:41:4a:96:5e:06:ab:f4:a0:2a:a6:2b:66:f8:bc:b5:fb:f0:4b:f7
AuthorityKeyId: 59:a4:66:06:52:a0:7b:95:92:3c:a3:94:07:27:96:74:5b:f9:3d:d0

Fingerprint (sha1): 6c:0d:fb:ba:61:ba:dc:40:31:00:43:64:c5:be:b1:56:95:6c:ef:b7
Fingerprint (sha256): c0:b8:2c:c3:99:c2:55:01:79:7b:47:24:4e:10:4b:0b:3c:7c:a7:02:28:28:39:f3:7c:a6:39:d3:e1:db:af:8b

Issuing Certificate URL: http://crt.sca1b.amazontrust.com/sca1b.crt

Revocation information

OCSP Server: http://ocsp.sca1b.amazontrust.com
CRL Distribution Point: http://crl.sca1b.amazontrust.com/sca1b.crl

Check the revocation status for certificate cs50.net

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 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

10 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

cs50.net
*.cs50.net
cs50.io
*.cs50.io

Other certificates including the domain name cs50.net

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAl8YzXHBONE9rvRwhIgFb
C3T2KtTStmbtgTnv7HoQ0PseuWFzfPnlzMEk6F0nejTqj5ghzrus5XyqrevT54oS
V0PPFlDf0gtYFwj88MrkVY3fdOFmJbjZl0CaVmWSMpEIw9DHaMcp4aps/yr5fSTg
cZ55JZW2P84DAC0DjGkIwIxd+fR/ru9IrryGtksLBLS2elPKoBUeOt23A6iFOuPU
VXTllrQ9/98Iu9zb1VmSScArCKTwKZ4NG/CWipKuHMyX6+t3TFpGmVNc9i3RWl81
WxkFlavq822ed5eOUajLu2GrNrkEdbGYHT2Imu/R1ILDH4iQ7emGpuoMsTIK278D
mwIDAQAB
-----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 3001289835471291732715812703762897888
 . . . . . . . . [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 'Amazon'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Server CA 1B'
 . . . . . . . . . . . . [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 'Amazon'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-02-08 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-08 12:00:00 +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 '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 19159720422843776312560370581087902724296340266921457886906979831342507876350669250618125225726668894674839476872582695157963767257490532618637487945676657338117753233956788062531263615035702879900002776457105093599961329492169646733504006891097114714486995538146874369343734939778071478058561712365392415320092436266221053254591675862970517575041816027182990101344802566543347299223601597116448433614096785842439979543510003983435329286067672153898546272100471181948702563642529821355995118796418002063108097769260979272790441801044642506165565276726660367194151410441338812127884372750171019880479596504668732064667
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 59a4660652a07b95923ca394072796745bf93dd0
 . . . . . . . . . . . . . . . . [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)
							2f414a965e06abf4a02aa62b66f8bcb5fbf04bf7
 . . . . . . . . . . . . . . . . [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 (44 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cs50.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.cs50.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cs50.io'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.cs50.io'
 . . . . . . . . . . . . . . . . [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 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.sca1b.amazontrust.com/sca1b.crl'
 . . . . . . . . . . . . . . . . [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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.840.1.114412.1.2 (digiCertDVCert)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (105 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.sca1b.amazontrust.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://crt.sca1b.amazontrust.com/sca1b.crt'
 . . . . . . . . . . . . . . . . [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 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)
							00f0007600a4b90990b418581487bb13a2cc67700a3c359804f91bdfb8e377cd0ec80ddc1000000168cdd86aa90000040300473045022014f1f5c4c3d67bd276efa38f5b7ef1fe233a97bd0fdabe403efd3d1b0e6f1dad022100d7128e981aced381292a32b4385c6aa79ddc8ee67aeb4fe6db1ae7fe8537142d0076008775bfe7597cf88c43995fbdf36eff568d475636ff4ab560c1b4eaff5ea0830f00000168cdd86b900000040300473045022076cd7da1caffb3aa4754f9f3cd8c1e9d53bf21a726fecc04494f48854202a728022100b60850ecc33f44e8ef3f3f15f2de5f4b2f94b1ce852972f6cc565b61891c7410
 . . . . [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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