app.flatironschool.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:9f:18:26:47:74:c0:11:5c:65:94:c1:03:0d:76:ac:cd:05 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=app.flatironschool.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:9f:18:26:47:74:c0:11:5c:65:94:c1:03:0d:76:ac:cd:05Serial Number (int): 315473854364190408755827288007949941525765
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 35:ec:6a:1d:82:07:43:8d:af:a5:67:b5:eb:86:fe:fc:bb:d6:2d:2d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): bf:bf:44:94:6d:58:f5:8c:93:e2:cf:1b:8f:56:39:2c:87:91:45:28
Fingerprint (sha256): 08:8a:5b:24:ea:b2:df:32:1b:ac:32:0a:18:4b:01:28:00:61:2a:b2:ad:a1:fe:06:16:30:2e:5f:af:44:c6:d3
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate app.flatironschool.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for app.flatironschool.com
Public Key Algorithm
RSA
Key Size
4096
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
app.flatironschool.com
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Certificate
The complete raw certificate details for app.flatironschool.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGZjCCBU6gAwIBAgISA58YJkd0wBFcZZTBAw12rM0FMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMDkxMjA2MDJaFw0y MDAxMDcxMjA2MDJaMCExHzAdBgNVBAMTFmFwcC5mbGF0aXJvbnNjaG9vbC5jb20w ggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQC/S0Zw4SDLrH5eQIWYezzX c7cRDe5g7Bcl+F3oTh/oAb60UlDolF5RPnJubC/bNHdtHs4U11TWCAvXGicLkwjR 2G9Rcm/S2Mf2Po+tXVuHXzKLhOy3HySb3ZN/meQ0cSbpRaMcW/F3+ViQQAi35ti6 PBO9PqKtfiu7i4V5cHBjDyVXuVS1x9ExowjbZtqKlR2HmNE2x7pn2rDpxk2Gl318 vEKhYnhovOwTM/iu2VdwMMaZUECYxyF8gje49WfDoJGKMzqutBvWz6nsMppXQ9Ne jwXmowOkY03BzK7h9BePTEQQsOw3sHRT0cAqmnaQy7QGQxK1suwqf7dYTnHy/MvO xKh1GJJLUm3eEHSUjRUTw+II9CAepv527lOGPjKMWNKZsFkjpRT/6w8e+MpFXOyN 12TB7svucne5QC9yQ2NzmJaNd5KER57b46iCrOjAgl/ZkMufQ29n2VEXS/dnzFsx gD6zoY4DRpPoZkG30YZCWP6GlL9Qr03UJcVre1g1QmuhRBAn+E5PG5NjyaTx2NID IAYYb9Oy9wvwbUntSCtp2i8luAkY5A01MonnbHQT34MZme6bz/xHHKrbxe3EZHVT g9ESpLdOwTNAxU1Xqni0XH3qvvBkINqUnGctjW5ys7zr5kTc1zHlXR2/pPkwh9s1 KLOdHT4FuGlaAp6ojHy9BQIDAQABo4ICbTCCAmkwDgYDVR0PAQH/BAQDAgWgMB0G A1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1Ud DgQWBBQ17GodggdDja+lZ7Xrhv78u9YtLTAfBgNVHSMEGDAWgBSoSmpjBH3duubR ObemRWXv86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9v Y3NwLmludC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9j ZXJ0LmludC14My5sZXRzZW5jcnlwdC5vcmcvMCEGA1UdEQQaMBiCFmFwcC5mbGF0 aXJvbnNjaG9vbC5jb20wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMB AQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEG BgorBgEEAdZ5AgQCBIH3BIH0APIAdwApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTD DPTlRUf0eAAAAW2woF1YAAAEAwBIMEYCIQDBSLEnh/qieU1PD+qp7AWqVyz8qgvC U4wsKN19SmbdRAIhAOG97C/mE0LyizKMBA82+fSzvel/ik2aHsdPaOwNIfEsAHcA b1N2rDHwMRnYmQCkURX/dxUcEdkCwQApBo2yCJo32RMAAAFtsKBeMwAABAMASDBG AiEAxsaUozv8WlM91sF9E6k38QcL25Vw77pcHbAU6hPMOO4CIQDsVXMzmulVtaVH KMiWsJeQaIDk+BgD4LmO3tObTCU/NzANBgkqhkiG9w0BAQsFAAOCAQEAFcuYR4qR bHb7rTtpG5KybS/BmAkIHZLK1nI0gfkCFKL3AiOF19e6hXiB4iDjUrpC+dKGfkDu sU13MwbFMoZJxYQVVoSkA1vLm8SBJCWwKOlM7v/k/OcyyCpsupBYEMb9Kfb4kz5I D3NX16ibRi/B2EoPBgy2Bv1x7kybhHtds0Ce/Tu4Da585/1hz4BA7aVxFn7929eU 8Sadj2DLkRrerMausoWhC3MQJKjqtvnc0HdK3iN8KH8mgYKMWLepp43MCXz7zp7+ 9rOpD1QusUluoY0VNYBl3Z2Xj8kRE7UOVXLu0iRfZ7GkAoJtW4A8rHyCFOE7F4u1 c7iFLWOe8BJMOQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAv0tGcOEgy6x+XkCFmHs8 13O3EQ3uYOwXJfhd6E4f6AG+tFJQ6JReUT5ybmwv2zR3bR7OFNdU1ggL1xonC5MI 0dhvUXJv0tjH9j6PrV1bh18yi4Tstx8km92Tf5nkNHEm6UWjHFvxd/lYkEAIt+bY ujwTvT6irX4ru4uFeXBwYw8lV7lUtcfRMaMI22baipUdh5jRNse6Z9qw6cZNhpd9 fLxCoWJ4aLzsEzP4rtlXcDDGmVBAmMchfII3uPVnw6CRijM6rrQb1s+p7DKaV0PT Xo8F5qMDpGNNwcyu4fQXj0xEELDsN7B0U9HAKpp2kMu0BkMStbLsKn+3WE5x8vzL zsSodRiSS1Jt3hB0lI0VE8PiCPQgHqb+du5Thj4yjFjSmbBZI6UU/+sPHvjKRVzs jddkwe7L7nJ3uUAvckNjc5iWjXeShEee2+OogqzowIJf2ZDLn0NvZ9lRF0v3Z8xb MYA+s6GOA0aT6GZBt9GGQlj+hpS/UK9N1CXFa3tYNUJroUQQJ/hOTxuTY8mk8djS AyAGGG/TsvcL8G1J7UgradovJbgJGOQNNTKJ52x0E9+DGZnum8/8Rxyq28XtxGR1 U4PREqS3TsEzQMVNV6p4tFx96r7wZCDalJxnLY1ucrO86+ZE3Ncx5V0dv6T5MIfb NSiznR0+BbhpWgKeqIx8vQUCAwEAAQ== -----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 315473854364190408755827288007949941525765 . . . . . . . . [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 2019-10-09 12:06:02 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-07 12:06:02 +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 'app.flatironschool.com' . . . . . . . . [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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 780411610193280848742420636779928147642677393097097936686418828764866251237671524393560672562842359595666204911822635965968713077859975913962351285314523807585867555659251247782026333439521454946303276181559421047330750384142479006390387240797063306892445910378284805440338458615066957446498215681357478869085150509050284607462206958969840701148228409352858217318597540478372105743145670919814782069478599744503945254488176084489021982233597362746607960639606022111582440709248640003275525832676903351317850018934823026425220400391749095714568264588945367055729718389174974345821834374336173215426713966688495678187131833327955730025061476330763446486595369933849713152645171378650909496658029031376090699866642054441960100469578564159714414727779393535308729081038424051088529667105140692704927281640759602886269888427975383841032184472254988505955924254697051675027441874204088859271505983413549717860966958625965208978527446086837618002128766504298885116227742462280668256132822551461190236506352658206468826055716418017415593767772501336525526066421104868374250644938442865548991300114980957632130118356473330605235697434860954742898724488530270279022937801954034845418779166042659348014419950191228668007141783154879184320118021 . . . . . . . . . . . . . . . . . . . . [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) 35ec6a1d8207438dafa567b5eb86fefcbbd62d2d . . . . . . . . . . . . . . . . [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 (26 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'app.flatironschool.com' . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016db0a05d580000040300483046022100c148b12787faa2794d4f0feaa9ec05aa572cfcaa0bc2538c2c28dd7d4a66dd44022100e1bdec2fe61342f28b328c040f36f9f4b3bde97f8a4d9a1ec74f68ec0d21f12c0077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016db0a05e330000040300483046022100c6c694a33bfc5a533dd6c17d13a937f1070bdb9570efba5c1db014ea13cc38ee022100ec5573339ae955b5a54728c896b097906880e4f81803e0b98eded39b4c253f37 . . . . [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) 0015cb98478a916c76fbad3b691b92b26d2fc19809081d92cad6723481f90214a2f7022385d7d7ba857881e220e352ba42f9d2867e40eeb14d773306c5328649c584155684a4035bcb9bc4812425b028e94ceeffe4fce732c82a6cba905810c6fd29f6f8933e480f7357d7a89b462fc1d84a0f060cb606fd71ee4c9b847b5db3409efd3bb80dae7ce7fd61cf8040eda571167efddbd794f1269d8f60cb911adeacc6aeb285a10b731024a8eab6f9dcd0774ade237c287f2681828c58b7a9a78dcc097cfbce9efef6b3a90f542eb1496ea18d15358065dd9d978fc91113b50e5572eed2245f67b1a402826d5b803cac7c8214e13b178bb573b8852d639ef0124c39