sz.speak-up.edu.vn
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:94:c5:8b:df:24:4e:14:0b:c9:23:5f:72:2b:3c:f0:c9:6d 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=sz.speak-up.edu.vn
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:94:c5:8b:df:24:4e:14:0b:c9:23:5f:72:2b:3c:f0:c9:6dSerial Number (int): 311961232269866316830228409790739180996973
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 4f:50:9c:88:24:e0:f5:53:92:5f:31:db:3c:fc:91:4c:d0:51:6c:5c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 69:fc:88:7d:cb:0f:87:14:04:d4:51:51:3d:d0:a6:fe:4e:38:b0:b5
Fingerprint (sha256): 43:6d:a1:17:68:f6:96:be:bc:39:b1:44:96:8f:41:23:ab:dd:72:7a:37:43:19:ec:a5:8b:b9:6c:96:2a:56:aa
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate sz.speak-up.edu.vn
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for sz.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
sz.speak-up.edu.vn
Other certificates including the domain name speak-up.edu.vn
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speak-up.edu.vn
Certificate
The complete raw certificate details for sz.speak-up.edu.vn in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFXDCCBESgAwIBAgISA5TFi98kThQLySNfcis88MltMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMDgwNjQ2MzdaFw0y MDAxMDYwNjQ2MzdaMB0xGzAZBgNVBAMTEnN6LnNwZWFrLXVwLmVkdS52bjCCASIw DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAIT/Y0e8gApOsLO8IbASLnd/f3cs xNYyzsiBMmSymc7GUsCexrKmlZpRxxgE69vGTM7+n1E4qtbUR1Eow6bMfTXTHCCB D+ZDDZYW1UFdW7yzM0IfRAcIKOF7GGtatZCR60UCb1i7wUhA7Q92ZZlD9OCPPlHb RXEOvgIbzbQYg7jYN+gWPd9eYM5nu2khsCDiQLVd5tlX2Kmvw45XqvxgI1fBlzQ+ zav0SWJJGnbvMihs5xtfYlDcD/TzNLxv3qohabHkW4Zmo6XH7LmXAwsLhp4eimI7 QyndEMHRFi/Ou8FKlpvH1/xQR5ynXr35GLTeqH5BphcvbxF3zFgiiLUxqWkCAwEA AaOCAmcwggJjMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYI KwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUT1CciCTg9VOSXzHbPPyR TNBRbFwwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUH AQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5 cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5 cHQub3JnLzAdBgNVHREEFjAUghJzei5zcGVhay11cC5lZHUudm4wTAYDVR0gBEUw QzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDov L2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHyAPAAdgBe p3P531bA57U2SH3QSeAyepGaDIShEhKEGHWWgXFFWAAAAW2qVZDIAAAEAwBHMEUC IB68SQrn3YQB7vADTsVDHRzKlMcI15DX97/mgXc+xvg+AiEAxgF9IAzwLvcYL0Kt ymxkcO1vtljHwVKEfN+YbTtszyEAdgCyHgXMi6LNiiBOh2b5K7mKJSBna9r6cOey SVMt74uQXgAAAW2qVZDwAAAEAwBHMEUCIQCHxoDNycby983szLTJrBxROalATzwF MhrAzlzbUq+jPwIgP+IaY7RIYgwik7nRytPp/YxoSNqLh4zjJ3b+ndMA1TwwDQYJ KoZIhvcNAQELBQADggEBABjqii8Sm5ZHcUUR0MH7bzGRjw4vdg8C84iikaYNgWo8 QuCZg6c6mXWnarwe8nuDkKpGVxI/XwJJm98xydoA+sXSMxPWaNYjCz6SY2RynMQm +MigMKLmEOG/uOORVa4niYRn9daD/tzooICf3qC8hHFGrYiGmCnTEiKSoTki4ZPe 38lUbBoKqLG7L6FFgN2IKVKFEoEjAyZtwO3XI2M7izJFDmdmUxr6JdbUQCEw2ZKG zw5eO9PKu7kzDyAvwtm52hv6ArfXgyu63hf0smmeHKnvuXS1x00asK4nemUUPIwO mJ/KxowwGlCU/KjhuqTGFXX6g4oJYY/P67xjtmgjeZQ= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhP9jR7yACk6ws7whsBIu d39/dyzE1jLOyIEyZLKZzsZSwJ7GsqaVmlHHGATr28ZMzv6fUTiq1tRHUSjDpsx9 NdMcIIEP5kMNlhbVQV1bvLMzQh9EBwgo4XsYa1q1kJHrRQJvWLvBSEDtD3ZlmUP0 4I8+UdtFcQ6+AhvNtBiDuNg36BY9315gzme7aSGwIOJAtV3m2VfYqa/Djleq/GAj V8GXND7Nq/RJYkkadu8yKGznG19iUNwP9PM0vG/eqiFpseRbhmajpcfsuZcDCwuG nh6KYjtDKd0QwdEWL867wUqWm8fX/FBHnKdevfkYtN6ofkGmFy9vEXfMWCKItTGp aQIDAQAB -----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 311961232269866316830228409790739180996973 . . . . . . . . [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 2019-10-08 06:46:37 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-06 06:46:37 +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 'sz.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 16789392680002130622908705532205301761324127234090955359123440282913075783725895889594223494308175131038601891143166889624786411535927506911999479474597150602288859436920328574306795788318648159682256257917692130155577508471153259665256913235214593206122157437616426139632070434947002503007845650606073360266385374108175784712287879593849397957762968369454928838389650629480802886021992435989969457287489750103163030228287752804155066416592804907804112382015295413021576080523601544961133322641204602636791717574368528024716259382038755128336318415921367422907581113711630510595483600512917570382282780984743918938473 . . . . . . . . . . . . . . . . . . . . [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) 4f509c8824e0f553925f31db3cfc914cd0516c5c . . . . . . . . . . . . . . . . [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 (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sz.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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f00076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016daa5590c8000004030047304502201ebc490ae7dd8401eef0034ec5431d1cca94c708d790d7f7bfe681773ec6f83e022100c6017d200cf02ef7182f42adca6c6470ed6fb658c7c152847cdf986d3b6ccf21007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016daa5590f0000004030047304502210087c680cdc9c6f2f7cdecccb4c9ac1c5139a9404f3c05321ac0ce5cdb52afa33f02203fe21a63b448620c2293b9d1cad3e9fd8c6848da8b878ce32776fe9dd300d53c . . . . [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) 0018ea8a2f129b9647714511d0c1fb6f31918f0e2f760f02f388a291a60d816a3c42e09983a73a9975a76abc1ef27b8390aa4657123f5f02499bdf31c9da00fac5d23313d668d6230b3e926364729cc426f8c8a030a2e610e1bfb8e39155ae27898467f5d683fedce8a0809fdea0bc847146ad88869829d3122292a13922e193dedfc9546c1a0aa8b1bb2fa14580dd8829528512812303266dc0edd723633b8b32450e6766531afa25d6d4402130d99286cf0e5e3bd3cabbb9330f202fc2d9b9da1bfa02b7d7832bbade17f4b2699e1ca9efb974b5c74d1ab0ae277a65143c8c0e989fcac68c301a5094fca8e1baa4c61575fa838a09618fcfebbc63b668237994