mail.120.co.kr
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:be:5d:fc:b2:c0:4c:af:ec:24:ba:d9:2d:93:d7:23:67:f3 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=mail.120.co.kr
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:be:5d:fc:b2:c0:4c:af:ec:24:ba:d9:2d:93:d7:23:67:f3Serial Number (int): 326115437798179846141312297313778614364147
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: ae:a1:42:bd:76:e4:05:68:2c:d8:dc:be:04:1d:b1:7a:e5:86:44:93
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 77:94:1c:08:bf:2b:9d:3a:57:fc:79:34:8d:ab:41:bc:e3:0b:3f:d6
Fingerprint (sha256): 48:6a:b0:b4:7d:cf:17:1e:bf:e1:b8:f6:16:38:ea:c1:7f:df:8c:c1:9b:96:ec:7a:b9:5a:7c:d1:84:81:85:ed
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate mail.120.co.kr
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for mail.120.co.kr
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
mail.120.co.kr
Other certificates including the domain name 120.co.kr
(limited to 100 certificates)
Certificate
The complete raw certificate details for mail.120.co.kr in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFUzCCBDugAwIBAgISA75d/LLATK/sJLrZLZPXI2fzMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA2MDExNTAzMDVaFw0x OTA4MzAxNTAzMDVaMBkxFzAVBgNVBAMTDm1haWwuMTIwLmNvLmtyMIIBIjANBgkq hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArXodjsjnZNrEDC/2X7hbOT4UmDkAqHwS Ew6iYaza8De9MojU0JMrMF9Rh/9E740GADJQm5DIhWfroAV+Y6OsOUSpHSdKnW4Q 2+g/H197tmdy3TZalZF1T//snFHVKk//QOz32Q+KjVGm0XIMUE6iHRSk/Hkf0BzP NDckCtKGeba9cn6kTI9XyjQxRKapNvrIBQkdqh1ie84RAA9eZNdcNmPNBNrFzXLL 1LVMn9pOZWi52Gtihc5zgEllLkuTSF+qqvKeZeFRd2TOrNro/z4ijFBZd3SYSVXM G+J4D24twzW4SRG0kRY1AY0XUCvikVyBqiueNESaXJIC4bl499yfzwIDAQABo4IC YjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEF BQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSuoUK9duQFaCzY3L4EHbF65YZE kzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcBAQRj MGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlwdC5v cmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlwdC5v cmcvMBkGA1UdEQQSMBCCDm1haWwuMTIwLmNvLmtyMEwGA1UdIARFMEMwCAYGZ4EM AQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0 c2VuY3J5cHQub3JnMIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHUA4mlLribo6UAJ 6IYbtjuD1D7n/nSI+6SPKJMBnd3x2/4AAAFrE8e9/gAABAMARjBEAiAexaz2Wq2S MTJo6jWs04ZDhUyA9bKVv++ISdGFuBqg/QIgGsRGGxtw6+FaGEX8s6cIEV8J+HYq VBj7luQ+67h49tQAdgBj8tvN6DvMLM8LcoQnV2szpI1hd4+9daY4scdoVEvYjQAA AWsTx74lAAAEAwBHMEUCIQDCwBzIIopnzLktBzbSheHkkpuzOubqSqAT88xoyhYU 6QIgD0ShY1by1eI0/Ru4kIGizU9KxGCrU4N8rX1lduiy/W0wDQYJKoZIhvcNAQEL BQADggEBAHXp1YPcaxS/v8ZBhQ6NjUxyfzjv0R6s4PWmoOH9x6KTZiNpkcEJjg71 WLa20cW8qiMtL98WFrltQ2rDjhzmU0PLMGtsu2KaE+ps4az8OH6EIr83XEdps8p1 uxV6kh1dyHCsHEf2RNXeX170uUnnt1geIX82lbaTESzvdyv5/rsyBH1Un/PZ6qPo j5sARTXkwjLtjrPg0LCJDc1wAmw+O7EmZJEI9HqIv7U6Z4RE0GVqJufVepbSATld 74Op79Iua9YHYkeXafnS/OzEW+yoFoy3UjVns6yhJSmx33pUHkdTmd0HShU5FlIS t0c3oFMhrbplQMgzuB8gulCXgc9QNdU= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArXodjsjnZNrEDC/2X7hb OT4UmDkAqHwSEw6iYaza8De9MojU0JMrMF9Rh/9E740GADJQm5DIhWfroAV+Y6Os OUSpHSdKnW4Q2+g/H197tmdy3TZalZF1T//snFHVKk//QOz32Q+KjVGm0XIMUE6i HRSk/Hkf0BzPNDckCtKGeba9cn6kTI9XyjQxRKapNvrIBQkdqh1ie84RAA9eZNdc NmPNBNrFzXLL1LVMn9pOZWi52Gtihc5zgEllLkuTSF+qqvKeZeFRd2TOrNro/z4i jFBZd3SYSVXMG+J4D24twzW4SRG0kRY1AY0XUCvikVyBqiueNESaXJIC4bl499yf zwIDAQAB -----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 326115437798179846141312297313778614364147 . . . . . . . . [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 2019-06-01 15:03:05 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-30 15:03:05 +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 'mail.120.co.kr' . . . . . . . . [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 21899444136773154716004753305603744022045587148623546837561864602654996278726257263791678725475718674748055416264104522845587606275058407030395822495551885058778726055052117993656279303283564267244621271928019588682774532206169034779236461692808362579055660274162263970426096123832603346028212168116599827635299780864785015870139091657802045059042955003557494589258354777427002518992867434484555710077204306469182080195421536304197481154352469014487182977275781840811729251667248387240309655950172933239023298218733847989123560516330967712555709981365608099422684496384943130879302754418338478310059048926104384217039 . . . . . . . . . . . . . . . . . . . . [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) aea142bd76e405682cd8dcbe041db17ae5864493 . . . . . . . . . . . . . . . . [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 'mail.120.co.kr' . . . . . . . . . . . . . . . . [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) 00ef007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016b13c7bdfe000004030046304402201ec5acf65aad92313268ea35acd38643854c80f5b295bfef8849d185b81aa0fd02201ac4461b1b70ebe15a1845fcb3a708115f09f8762a5418fb96e43eebb878f6d400760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016b13c7be250000040300473045022100c2c01cc8228a67ccb92d0736d285e1e4929bb33ae6ea4aa013f3cc68ca1614e902200f44a16356f2d5e234fd1bb89081a2cd4f4ac460ab53837cad7d6576e8b2fd6d . . . . [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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