mail.120.co.kr
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:d9:b5:45:eb:f8:05:ef:7f:82:25:0d:fd:dc:f7:c9:40:b5 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:d9:b5:45:eb:f8:05:ef:7f:82:25:0d:fd:dc:f7:c9:40:b5Serial Number (int): 335419084738861373309667336098275253633205
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 4c:ad:4a:26:fb:eb:3f:76:0e:63:4c:b0:21:0e:f5:33:aa:9e:89:7a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): cc:76:a0:b6:9d:81:d5:6c:8d:48:7a:04:52:d8:9d:27:06:d3:a6:f3
Fingerprint (sha256): 11:d0:9a:ef:10:04:5e:a5:1d:f7:43:49:da:24:dc:0e:38:c2:cd:6d:1f:20:0d:cd:4b:5c:cb:fb:58:e9:12:2c
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----- MIIFVDCCBDygAwIBAgISA9m1Rev4Be9/giUN/dz3yUC1MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA5MjkxNTAzMTJaFw0x OTEyMjgxNTAzMTJaMBkxFzAVBgNVBAMTDm1haWwuMTIwLmNvLmtyMIIBIjANBgkq hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqUVzFQy06p+x/M9CCK2y7quMxI+VXBk3 k7Wh0ntEtQK2ZbmivT/nrwtSxSkZjRVl0f1fc0mdXQm8Fycgry8xODSv+1sGvINS CSU4R/DwpE2uMcER7BOn9jzGgXMd+rW0Pn4XPOqZ/zTOchwJckLNLy2GHi/nEfAo EAatqozCQ0zx+bIzRpFm6jVeyukRznX2X86NZzutHg4fJSoT9J+0M1UxXhvL4dx+ NDcnln4ZJdT29/n7+MssU5YB1LztENlffZYu5yT3Z7qbxG6kHst3WjCiJajd/1HW n8Woa2LtQR2xT+W1q25G/iyuWpe6l8Q6LF2cQPOLhmZbP9afOg9wzwIDAQABo4IC YzCCAl8wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEF BQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRMrUom++s/dg5jTLAhDvUzqp6J ejAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcBAQRj MGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlwdC5v cmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlwdC5v cmcvMBkGA1UdEQQSMBCCDm1haWwuMTIwLmNvLmtyMEwGA1UdIARFMEMwCAYGZ4EM AQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0 c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYA4mlLribo6UAJ 6IYbtjuD1D7n/nSI+6SPKJMBnd3x2/4AAAFtfcL5qQAABAMARzBFAiEA8sOD/8P2 1s07YbpCiOGM49V7xJcAP8KyADIxyklV8xQCIFebEAQuafWwLty0UNu1i46ClzPw qMFYSARgaErm+1GLAHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgA AAFtfcL5zgAABAMARzBFAiBwIh2jiyIwk9w/fE2RwcBUt4oPjVhlzcnIgjrh4mXv QwIhAMNJ164arZO1hdGpuqLqNuj7eniNmaPd3/R2p0Bb1kaMMA0GCSqGSIb3DQEB CwUAA4IBAQB5C90FzhXFIxDlSK+BQNfDB7UlYwh5Que61izEb/EgbA8DOJCuSbQU QCOSaS2xbX7byiwp7VUMurpIpBi/BDMh+rK5dnLsQmDXVhUzPl0vNU76TZSJ1A6/ PNOg0ko2XdVA6RNrCTUVG1gmWlAjobaFUg783D13G1HIb433TiNxOuXT2Ivh1QjL NF22WDYX4GjWA+JYV3upCaeWR1uTDdAmq9JlknImZ0lHrvBB/b2MDA7c34jLExw8 yNAML2a34irYBEGveYpCdU/RElnEYscWUGd73acKkuzdKLbzE1hOgve+F/PgVqv/ diuPf79r+7cfASxbHuXljXvY0lExNfJL -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqUVzFQy06p+x/M9CCK2y 7quMxI+VXBk3k7Wh0ntEtQK2ZbmivT/nrwtSxSkZjRVl0f1fc0mdXQm8Fycgry8x ODSv+1sGvINSCSU4R/DwpE2uMcER7BOn9jzGgXMd+rW0Pn4XPOqZ/zTOchwJckLN Ly2GHi/nEfAoEAatqozCQ0zx+bIzRpFm6jVeyukRznX2X86NZzutHg4fJSoT9J+0 M1UxXhvL4dx+NDcnln4ZJdT29/n7+MssU5YB1LztENlffZYu5yT3Z7qbxG6kHst3 WjCiJajd/1HWn8Woa2LtQR2xT+W1q25G/iyuWpe6l8Q6LF2cQPOLhmZbP9afOg9w 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 335419084738861373309667336098275253633205 . . . . . . . . [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 2019-09-29 15:03:12 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-28 15:03:12 +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 21368520383806658028123319657336686060967683175913198972703077733220159835584885833719971734854019971693234347302848026563926189870184464189998799972578340803869192795066785211752587370437039015735838670164410314242883602534509682520707397436903078312258854276825735348438291400147587949729047930039673854560390760589293625660506440393788380537588253350315853655819266152944135637071941967444578600673981503350372682857783749014984359871461457586669943275468169814316325024725019845428401612922872895128019997573557952200399798247986157635742910911199039521938293342060265305799403093773871855173841443987414825529551 . . . . . . . . . . . . . . . . . . . . [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) 4cad4a26fbeb3f760e634cb0210ef533aa9e897a . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016d7dc2f9a90000040300473045022100f2c383ffc3f6d6cd3b61ba4288e18ce3d57bc497003fc2b2003231ca4955f3140220579b10042e69f5b02edcb450dbb58b8e829733f0a8c158480460684ae6fb518b007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016d7dc2f9ce0000040300473045022070221da38b223093dc3f7c4d91c1c054b78a0f8d5865cdc9c8823ae1e265ef43022100c349d7ae1aad93b585d1a9baa2ea36e8fb7a788d99a3dddff476a7405bd6468c . . . . [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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