promotion.speak-up.edu.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:1e:6c:ab:18:88:84:34:6c:6d:6b:12:0f:f0:c2:62:03:ef 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=promotion.speak-up.edu.vn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:1e:6c:ab:18:88:84:34:6c:6d:6b:12:0f:f0:c2:62:03:efSerial Number (int): 271689773806810250200624094705772761580527
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 34:c3:33:75:a5:9a:8c:60:8e:ed:71:74:b3:bc:7b:b4:4c:24:2d:83
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 5e:09:ea:70:9b:c5:bf:11:d1:d6:5f:60:64:9f:c7:e2:42:39:7b:1f
Fingerprint (sha256): 9a:f6:5b:1b:6d:83:60:ff:a1:0c:86:0a:b7:4a:06:39:b8:7a:fc:8f:74:d3:19:62:ec:0c:a7:e7:39:67:3a:4d
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate promotion.speak-up.edu.vn
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for promotion.speak-up.edu.vn
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
promotion.speak-up.edu.vn
Other certificates including the domain name speak-up.edu.vn
(limited to 100 certificates)
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speak-up.edu.vn
Certificate
The complete raw certificate details for promotion.speak-up.edu.vn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFaTCCBFGgAwIBAgISAx5sqxiIhDRsbWsSD/DCYgPvMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMjEwMTE0MTlaFw0y MDA1MjEwMTE0MTlaMCQxIjAgBgNVBAMTGXByb21vdGlvbi5zcGVhay11cC5lZHUu dm4wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDtH3YPeN56aglLT1ST 0D2PCYiBP5HVhZr8Fm35dVSMCLopYRVq+iWFanmvGCXtCuvBmbLTwZD+NJ4cMw5e 7jvPK9A+wCkT6lQp+AODXJNM9TjrpZfmB71J16OuoqntkXnQM5hf+f7f23a1Q2rm map/KU6lcwrCk90n+WC6H+QbNweNAfYPwAEvZ6dwoYNwdPX9o4Qbtcu7I9weG5jg ZZi9rvfcJ9J3YdtckkmG54NJSnQELxuknx1MkcMdrG3LVZEbkAUKHHg2ZYYM67eK jYnptOGJwHxkf7Q0CWigl9gq4LSdMVyrLvMymCdnvdyi10DDSLT+D6eUzf2myyDK NMVzAgMBAAGjggJtMIICaTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFDTDM3Wlmoxg ju1xdLO8e7RMJC2DMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8G CCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZy8wJAYDVR0RBB0wG4IZcHJvbW90aW9uLnNwZWFrLXVwLmVk dS52bjBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkC BAIEgfQEgfEA7wB1AF6nc/nfVsDntTZIfdBJ4DJ6kZoMhKESEoQYdZaBcUVYAAAB cGWGOBkAAAQDAEYwRAIgJ/VnxGf2srKk8pzy68D/GUvzg4eoxfZUoj2F7IB5u/sC IBLVgUIzbfFwUj8RP9ZBTdApfObkMWsTUVKM7IxMQaWzAHYAsh4FzIuizYogTodm +Su5iiUgZ2va+nDnsklTLe+LkF4AAAFwZYY4BQAABAMARzBFAiAVdeago5AEOidr DpPJ3fW6UToUQVFluYsYUOyajHB2UwIhAPi4ir6GXoKGfCuw+t+6EEQTwEOgZblA qeUJ6VfmrttEMA0GCSqGSIb3DQEBCwUAA4IBAQA1UKKNDDeW393EteUy63542FVr EXqrjJLRlMuApJdxzyQbJZSzI6/CONS2V9QOFStdv0ngJK2BrWqb9uRwOXBK98r6 pDU5juuMARCL8Jh8XOM8f+YkwWLR2wZ8Yk3DBll0xXX67MqMDzahvMgTTiHez4Ep g7I24HsD10ZzE4/kw5nt9vU0CVWkG9DCus6D5IvBIxmv9eMtSboFzWIo422Kejuj z0bTxL9xrQU2JL95iZQnGGAlVlQjTJSoU6F4RY0ZRgWDyvIfJQRpnno9icJU8LIP ohUoVeQq23e7ElO2TqT7yxcX2NkWhV7dut3J08eSd0h1yaDreT1H3i4lKGlV -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7R92D3jeemoJS09Uk9A9 jwmIgT+R1YWa/BZt+XVUjAi6KWEVavolhWp5rxgl7QrrwZmy08GQ/jSeHDMOXu47 zyvQPsApE+pUKfgDg1yTTPU466WX5ge9SdejrqKp7ZF50DOYX/n+39t2tUNq5pmq fylOpXMKwpPdJ/lguh/kGzcHjQH2D8ABL2encKGDcHT1/aOEG7XLuyPcHhuY4GWY va733CfSd2HbXJJJhueDSUp0BC8bpJ8dTJHDHaxty1WRG5AFChx4NmWGDOu3io2J 6bThicB8ZH+0NAlooJfYKuC0nTFcqy7zMpgnZ73cotdAw0i0/g+nlM39pssgyjTF cwIDAQAB -----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 271689773806810250200624094705772761580527 . . . . . . . . [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 2020-02-21 01:14:19 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-21 01:14:19 +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 'promotion.speak-up.edu.vn' . . . . . . . . [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 29933992359869033892731743473544296661906799492183243496559440617304748883642235721518246322997838944103325777645258981017479650647356054286148319285817911948785224873361492061292051138668707934869054287414663948147604261624768231279924213744864822544089504235580160151285124715248450029788944025924315830042461503224022600800929536695306220345568779779858601847851349693246500296330850345260819030087746742386473167041155077670138178562320805225461441883278682684843029038886552485536875079562960917715446989773800453984350939229664465609193800726677812452572598961587142105334280190408531627317778087151177978660211 . . . . . . . . . . . . . . . . . . . . [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) 34c33375a59a8c608eed7174b3bc7bb44c242d83 . . . . . . . . . . . . . . . . [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 (29 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'promotion.speak-up.edu.vn' . . . . . . . . . . . . . . . . [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) 00ef0075005ea773f9df56c0e7b536487dd049e0327a919a0c84a11212841875968171455800000170658638190000040300463044022027f567c467f6b2b2a4f29cf2ebc0ff194bf38387a8c5f654a23d85ec8079bbfb022012d58142336df170523f113fd6414dd0297ce6e4316b1351528cec8c4c41a5b3007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000017065863805000004030047304502201575e6a0a390043a276b0e93c9ddf5ba513a14415165b98b1850ec9a8c707653022100f8b88abe865e82867c2bb0fadfba104413c043a065b940a9e509e957e6aedb44 . . . . [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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