school.obt.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:9c:33:9d:f6:05:19:82:90:44:a7:f8:8f:4b:eb:19:47:cb 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=school.obt.org
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:9c:33:9d:f6:05:19:82:90:44:a7:f8:8f:4b:eb:19:47:cbSerial Number (int): 314489517843215759195385495934250128066507
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: bc:e8:31:56:97:f5:65:c0:c2:69:61:9a:51:a0:3e:1a:ad:a5:88:99
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 6a:83:19:3e:c4:f1:2e:32:09:0f:56:51:5f:25:ac:35:9e:c8:04:3d
Fingerprint (sha256): 86:cb:4c:a0:53:2a:a3:a6:e1:63:39:75:c7:a3:55:8c:80:38:fc:05:10:79:60:9a:47:63:c0:46:53:42:9d:a5
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate school.obt.org
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for school.obt.org
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
school.obt.org
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Certificate
The complete raw certificate details for school.obt.org in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFUzCCBDugAwIBAgISA5wznfYFGYKQRKf4j0vrGUfLMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MjQxNzI1MTVaFw0x OTExMjIxNzI1MTVaMBkxFzAVBgNVBAMTDnNjaG9vbC5vYnQub3JnMIIBIjANBgkq hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsVl7pzgcrXoN1MqnjzRoEqD1oIl14NgA gBj9fa/1a0ohPBfhM4RteS94ya+BX46byr/1VKwJvRG7u3bFIY7dizTchEvSuyEC Hkswf/cx4c3ch+UycKjTy8PDCG/1sQ/yX8/ih2+8eY31Th8xM36teoqT52sBBWa0 RuRIleWWene8d8j9krcrL0iqTVD5fGRoOl695UEWVqyVqscOsYAZlLYfEQEnxfPL OpKeGhMG4qZHSqKRZtw/44PF5h/k+8+1VNAGwuo+p3QC6qV8oCDz0aqfvLN71gyJ E5tUTzitvpyBrZyQ6lKGoLcdEGhiVwKxK57lwHXoFW0EC47tKRrnbwIDAQABo4IC YjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEF BQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBS86DFWl/VlwMJpYZpRoD4araWI mTAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcBAQRj MGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlwdC5v cmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlwdC5v cmcvMBkGA1UdEQQSMBCCDnNjaG9vbC5vYnQub3JnMEwGA1UdIARFMEMwCAYGZ4EM AQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0 c2VuY3J5cHQub3JnMIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHUAb1N2rDHwMRnY mQCkURX/dxUcEdkCwQApBo2yCJo32RMAAAFsxOAXQQAABAMARjBEAiBSPZbkS4oy U2hxRZOcUHauf5liAe1D2UvW0K/VLSiRQwIgK2smp/E4Ccnvf+E/z7E3MwHTiKVP 5YOqgerIv85njCQAdgApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTDDPTlRUf0eAAA AWzE4BgGAAAEAwBHMEUCIQDXiRi7u0amLzR+LS6huXKEaAZG5R2nXMW4qz4LrY1k xwIgVhe7uMKX1t5tyaVsqJQJk2l3gFlDfEXvtOiH3dNUsaEwDQYJKoZIhvcNAQEL BQADggEBAIJSDQgaM3SspGdeY512i7AoDHzSTPm0cz5qOtYG0E2i10QfPMLnFzLK gxJujlOL9XT2GArmqiWL9yZjcJmdlspk7SOFoNWaGctXAkNfL+YfjvmbUK3YfNBW eLEpoM6osLasEZoyvmibXyTl5NVY/IIQ31EkywUsqw0FZdTn/RSqfolmithiRPIX khGkv71wFlIPq7jl1b44bb5lyEWhIWmkA6Rzorh/hZq9apDXH6MGLuDhzUxBs2fb NpwGGV5Bm2axIFNNGFoWOmDIEwQYU42q3Uj5acK78aXoD3tz1y8UsiK37UrRh+qD gjVMpeQ/oezFL3f+l5AKyNmyO5w/oR4= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsVl7pzgcrXoN1MqnjzRo EqD1oIl14NgAgBj9fa/1a0ohPBfhM4RteS94ya+BX46byr/1VKwJvRG7u3bFIY7d izTchEvSuyECHkswf/cx4c3ch+UycKjTy8PDCG/1sQ/yX8/ih2+8eY31Th8xM36t eoqT52sBBWa0RuRIleWWene8d8j9krcrL0iqTVD5fGRoOl695UEWVqyVqscOsYAZ lLYfEQEnxfPLOpKeGhMG4qZHSqKRZtw/44PF5h/k+8+1VNAGwuo+p3QC6qV8oCDz 0aqfvLN71gyJE5tUTzitvpyBrZyQ6lKGoLcdEGhiVwKxK57lwHXoFW0EC47tKRrn bwIDAQAB -----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 314489517843215759195385495934250128066507 . . . . . . . . [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 2019-08-24 17:25:15 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-22 17:25:15 +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 'school.obt.org' . . . . . . . . [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 22388305700896553802262074054026657207400447087241337227863996414957906396500751552010161692445658858810009686623701414747904068447560971487725452905052974726230171195782879917331112569473538950370270909374893094447692827603531698001678887026205871502365930983600807674785334611890162332316464956858802134075154552412696004251184573586647731810273186366995921461555701390075196496417372916057523484728242055928503282003311792959449146647445729568318209925627042623489552419027363469148048489430611068615012585644437249880977400429791910615635276360802591137080117972811704599739056345783513395671441578943617959651183 . . . . . . . . . . . . . . . . . . . . [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) bce8315697f565c0c269619a51a03e1aada58899 . . . . . . . . . . . . . . . . [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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'school.obt.org' . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016cc4e0174100000403004630440220523d96e44b8a3253687145939c5076ae7f996201ed43d94bd6d0afd52d28914302202b6b26a7f13809c9ef7fe13fcfb1373301d388a54fe583aa81eac8bfce678c24007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016cc4e018060000040300473045022100d78918bbbb46a62f347e2d2ea1b97284680646e51da75cc5b8ab3e0bad8d64c702205617bbb8c297d6de6dc9a56ca894099369778059437c45efb4e887ddd354b1a1 . . . . [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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