cs50.io
Issued by Amazon
About this certificate
This digital certificate with serial number 0c:de:e2:70:79:a1:73:cf:d3:df:d5:22:8e:a4:89:ed 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.io
Amazon
Organization:
Amazon
Organization unit: Server CA 1B
Organization unit: Server CA 1B
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 0c:de:e2:70:79:a1:73:cf:d3:df:d5:22:8e:a4:89:edSerial Number (int): 17108018587781219234730494950275058157
Serial Number lenght: 124 bits, 16 octets
SubjectKeyId: 99:47:f7:58:d0:39:c3:d8:c8:32:34:1c:7c:27:37:d1:2f:77:0a:82
AuthorityKeyId: 59:a4:66:06:52:a0:7b:95:92:3c:a3:94:07:27:96:74:5b:f9:3d:d0
Fingerprint (sha1): 28:d2:3d:45:8d:97:6a:99:12:90:2b:af:e1:e0:42:9b:e3:15:40:aa
Fingerprint (sha256): 97:5c:50:70:d2:cb:ee:28:1a:14:ce:d6:e2:1f:f1:3a:c0:cc:80:95:1b:3f:22:0b:91:09:79:33:47:fe:bf:84
Issuing Certificate URL: http://crt.sca1b.amazontrust.com/sca1b.crt
Revocation information
OCSP Server: http://ocsp.sca1b.amazontrust.comCRL Distribution Point: http://crl.sca1b.amazontrust.com/sca1b.crl
Check the revocation status for certificate cs50.io
4
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for cs50.io
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
cs50.io
*.cs50.io
cs50.net
*.cs50.net
*.cs50.io
cs50.net
*.cs50.net
Other certificates including the domain name cs50.io
(limited to 100 certificates)
ap.cs50.school
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*.legacy.cs50.io
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ap.cs50.school
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cs50.io
*.cs50.io
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cs50.dev
*.legacy.cs50.io
ap.cs50.school
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*.cs50.io
ap.cs50.school
cs50.io
*.legacy.cs50.io
cs50.net
cs50.io
ap.cs50.school
*.legacy.cs50.io
cs50.net
ap.cs50.school
ap.cs50.school
cs50.io
cs50.io
ap.cs50.school
*.legacy.cs50.io
cs50.dev
ap.cs50.school
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*.legacy.cs50.io
ap.cs50.school
*.cs50.io
ap.cs50.school
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cs50.io
cs50.net
cs50.io
*.cs50.io
cs50.net
cs50.io
ap.cs50.school
ap.cs50.school
ap.cs50.school
cs50.io
ap.cs50.school
ap.cs50.school
ap.cs50.school
ap.cs50.school
cs50.io
cs50.dev
*.legacy.cs50.io
ap.cs50.school
cs50.net
*.cs50.io
ap.cs50.school
cs50.io
*.legacy.cs50.io
cs50.net
cs50.io
ap.cs50.school
*.legacy.cs50.io
cs50.net
ap.cs50.school
ap.cs50.school
cs50.io
cs50.io
ap.cs50.school
*.legacy.cs50.io
cs50.dev
Certificate
The complete raw certificate details for cs50.io in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIEcDCCA1igAwIBAgIQDN7icHmhc8/T39UijqSJ7TANBgkqhkiG9w0BAQsFADBG MQswCQYDVQQGEwJVUzEPMA0GA1UEChMGQW1hem9uMRUwEwYDVQQLEwxTZXJ2ZXIg Q0EgMUIxDzANBgNVBAMTBkFtYXpvbjAeFw0xODAxMDgwMDAwMDBaFw0xOTAyMDgx MjAwMDBaMBIxEDAOBgNVBAMTB2NzNTAuaW8wggEiMA0GCSqGSIb3DQEBAQUAA4IB DwAwggEKAoIBAQCsFTSROuucvNbtLrongAR4dgYX31xwMCv1+9Xg4k4JGAJAYHkS 5kTcI7ZhLAqadP+DW+Td8pTiMJ8lMBrsDs4EseVnqA+pbpV4OwjSlXMjud0I0oTP OUmjdrLB0GW5sZtSFg6q9F48ImlNyH9DxTQwAuWJuwsEgTBMeGtRzTHKR4axAySe bl+phz2puw9X5vA/5cXdizTcVNTzlP1DjVzdU44QdfA5U9doae9AUSoNJIIJzL8N f0KiLmMBVzHmn8W28FAavO/cWCC+hCdiobt9vB1fTi1SM5KWaAdju6oZF/wa4x6F 5MadN1hiIcJufBdM0pdpfSWXgPhbdbHv11+5AgMBAAGjggGMMIIBiDAfBgNVHSME GDAWgBRZpGYGUqB7lZI8o5QHJ5Z0W/k90DAdBgNVHQ4EFgQUmUf3WNA5w9jIMjQc fCc30S93CoIwMwYDVR0RBCwwKoIHY3M1MC5pb4IJKi5jczUwLmlvgghjczUwLm5l dIIKKi5jczUwLm5ldDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUH AwEGCCsGAQUFBwMCMDsGA1UdHwQ0MDIwMKAuoCyGKmh0dHA6Ly9jcmwuc2NhMWIu YW1hem9udHJ1c3QuY29tL3NjYTFiLmNybDAgBgNVHSAEGTAXMAsGCWCGSAGG/WwB AjAIBgZngQwBAgEwdQYIKwYBBQUHAQEEaTBnMC0GCCsGAQUFBzABhiFodHRwOi8v b2NzcC5zY2ExYi5hbWF6b250cnVzdC5jb20wNgYIKwYBBQUHMAKGKmh0dHA6Ly9j cnQuc2NhMWIuYW1hem9udHJ1c3QuY29tL3NjYTFiLmNydDAMBgNVHRMBAf8EAjAA MA0GCSqGSIb3DQEBCwUAA4IBAQCfJkpayzE0OcO2SR8e78Yp838+9pyhm4ok4k1K GqG9LtjWC2WU9DsH8JKBGb4DPXJvfNWsh5vRrkTS5zQ7OzEHr1PiYt0EdLzcIME9 KeoVIvtBZIHs+Bu0gplHmR24fiFNLgGQb0tupBEcdYFOmM5ZVsyiqxgGNsNB0Utn rYVN8RqvDl6M2nDFiWyR3b88c/WOs4U7jxU2psISQiyhPaD93mKdUVfPnEjwhDLB SK8EBfW1soEul+xjynQhSpevZbEl97d6W40ZKEBltBvIWMjxSOkbo21aNROK24WZ e1/2oyBTalTsNbonu+3iW1Zm0OtQ6W6M5GwMcbMxo9bogTpr -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArBU0kTrrnLzW7S66J4AE eHYGF99ccDAr9fvV4OJOCRgCQGB5EuZE3CO2YSwKmnT/g1vk3fKU4jCfJTAa7A7O BLHlZ6gPqW6VeDsI0pVzI7ndCNKEzzlJo3aywdBlubGbUhYOqvRePCJpTch/Q8U0 MALlibsLBIEwTHhrUc0xykeGsQMknm5fqYc9qbsPV+bwP+XF3Ys03FTU85T9Q41c 3VOOEHXwOVPXaGnvQFEqDSSCCcy/DX9Coi5jAVcx5p/FtvBQGrzv3FggvoQnYqG7 fbwdX04tUjOSlmgHY7uqGRf8GuMeheTGnTdYYiHCbnwXTNKXaX0ll4D4W3Wx79df uQIDAQAB -----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 17108018587781219234730494950275058157 . . . . . . . . [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 2018-01-08 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-02-08 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.io' . . . . . . . . [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 21723445197555266309914606379058795742412397673966427107158434097796552486896700638751665871425251125918114992563575673732023591483709424810083554265358220247904656105482299782309142831512103401174001997163464734049694568265101148388394717337060902015934712333311452892895571841617237700048743970922584787791981414767792055476651025904940738933874150021544796938084457405034352655857823271470599834733753430522768303922390809424884281463388008596401972395059594331218047312416304234349584510160038014326161488335422186966762899145691335417970079118164820177594597285267206694475201061900889379649947660060136027152313 . . . . . . . . . . . . . . . . . . . . [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) 9947f758d039c3d8c832341c7c2737d12f770a82 . . . . . . . . . . . . . . . . [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.io' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.cs50.io' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cs50.net' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.cs50.net' . . . . . . . . . . . . . . . . [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 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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