sz2.speak-up.edu.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:92:71:72:13:6b:ab:2b:14:11:52:1f:1f:dd:41:51:63:16 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=sz2.speak-up.edu.vn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:92:71:72:13:6b:ab:2b:14:11:52:1f:1f:dd:41:51:63:16Serial Number (int): 311168878444999493943176731270459281203990
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 1d:51:32:ac:91:2d:4e:5c:26:f6:1c:fb:76:13:15:1d:81:2f:b2:16
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 51:3d:92:ca:0e:97:73:12:69:ed:98:99:c8:3d:ae:cc:7c:df:14:06
Fingerprint (sha256): 96:28:a9:d5:58:be:5f:df:36:a2:99:9c:0d:8a:99:23:cd:ea:fa:ab:d2:98:51:9f:5e:1d:2f:66:94:8d:aa:ca
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate sz2.speak-up.edu.vn
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for sz2.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
sz2.speak-up.edu.vn
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speak-up.edu.vn
Certificate
The complete raw certificate details for sz2.speak-up.edu.vn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFXTCCBEWgAwIBAgISA5JxchNrqysUEVIfH91BUWMWMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAxMjAxNjQ2MDZaFw0x OTA0MjAxNjQ2MDZaMB4xHDAaBgNVBAMTE3N6Mi5zcGVhay11cC5lZHUudm4wggEi MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCYv8LgPuI8gTMTVDYd8WG4U2B2 6xvo2sj6PeQ97l4gPx8cFZ3B8+9jknv1t2u8+g4CjM7gSXxhv11cGeRYowf8a4u8 c67z5JemhQAdaey+AGtTmBMPPKZDYGoN3V3q2mLWqMZgiGpo49AXNbb9nHRNoOGC Z0nTGFQ9PpRzOvfk+FwpMl3Uk7Dno2i58bDdxTRG1E9VxVtyTXCc7Sqv73lyxDup Js0Xty3DqmjoVgx+AeJOR/MudlMEo+Hi54DTOptJ4B7qU/6fkq3sFvdFjLvTHd6h eSamr4KlG4OwRuA6HYdCqY8BzSQJxjdkQ91VlbvTcFsMb2mRU0ntBDf8EDadAgMB AAGjggJnMIICYzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG CCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFB1RMqyRLU5cJvYc+3YT FR2BL7IWMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUF BwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNy eXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNy eXB0Lm9yZy8wHgYDVR0RBBcwFYITc3oyLnNwZWFrLXVwLmVkdS52bjBMBgNVHSAE RTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRw Oi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQEgfEA7wB2 AOJpS64m6OlACeiGG7Y7g9Q+5/50iPukjyiTAZ3d8dv+AAABaGxeoDIAAAQDAEcw RQIhAL1VhWptstnrjV/YA3ucZJ2SJJ2OmgN94c1jK99DU2yZAiBCt5PAQJzyt2a3 /A93aOi6tZQh9y3iUXU+wBsH5+hLBAB1ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLc pMMM9OVFR/R4AAABaGxenp8AAAQDAEYwRAIgJy2R53sYAq7iiuV3WfglrUidYMLd Uphtxa4WUumL3WMCIE3jGznHC6Pf+ECZ6CyPshN5WNSqR4161FXlWbbUlp5sMA0G CSqGSIb3DQEBCwUAA4IBAQARfKLNRW0wn44w3EdJFJ0uemtwhtodoDcLx50OLEx1 Ljrp1wHqpAMIgHOx8m1rqi9RRYQhbfZcOPnRVavFbEf7Wy7fRqffNc+CCxhIoVBK xyZO2WQfCjPwJAQ7Il58I42FQ8/rCyALQEHu5dy2Mqt7hMo5Nmfk81LYVu9gaUnr woyDFk5sNEsrO0FS8L+lfnqCfLimrKW6/BiU7pB55lIyfbitp6IZ/NQsn73NIV0T mYyObBGNG5UWnnYFpQbSpq4MVgUG3pwbNInI+S79SzzJKzIjMOMUI2yM0flcdmW5 QTfMquqBmukJtt2D0mIgFnlFgq9fIP50uadhyUXpXJGh -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmL/C4D7iPIEzE1Q2HfFh uFNgdusb6NrI+j3kPe5eID8fHBWdwfPvY5J79bdrvPoOAozO4El8Yb9dXBnkWKMH /GuLvHOu8+SXpoUAHWnsvgBrU5gTDzymQ2BqDd1d6tpi1qjGYIhqaOPQFzW2/Zx0 TaDhgmdJ0xhUPT6Uczr35PhcKTJd1JOw56NoufGw3cU0RtRPVcVbck1wnO0qr+95 csQ7qSbNF7ctw6po6FYMfgHiTkfzLnZTBKPh4ueA0zqbSeAe6lP+n5Kt7Bb3RYy7 0x3eoXkmpq+CpRuDsEbgOh2HQqmPAc0kCcY3ZEPdVZW703BbDG9pkVNJ7QQ3/BA2 nQIDAQAB -----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 311168878444999493943176731270459281203990 . . . . . . . . [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 2019-01-20 16:46:06 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-20 16:46:06 +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 'sz2.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 19282783343769591932113717315525559712013160550774884582324243763576209067770285867667207764833582427423226332900852826300162439210811026209081260595657956100657653716145497644122374972202799674050546922675218780120540385974299894986189150147517024326039529999444166741774972986565952423440393186514821580602554818386342510521944696259200968474126704496982530528437447230575767299867933004937815398088752874299561985039359894221244898895748711477212252905451143797382038379534037640449641900089228946006228855884853232778157703224715537341743348833112666511719922995478621722790798279413772417657956118017267739932317 . . . . . . . . . . . . . . . . . . . . [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) 1d5132ac912d4e5c26f61cfb7613151d812fb216 . . . . . . . . . . . . . . . . [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 (23 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sz2.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) 00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe000001686c5ea0320000040300473045022100bd55856a6db2d9eb8d5fd8037b9c649d92249d8e9a037de1cd632bdf43536c99022042b793c0409cf2b766b7fc0f7768e8bab59421f72de251753ec01b07e7e84b04007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001686c5e9e9f00000403004630440220272d91e77b1802aee28ae57759f825ad489d60c2dd52986dc5ae1652e98bdd6302204de31b39c70ba3dff84099e82c8fb2137958d4aa478d7ad455e559b6d4969e6c . . . . [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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