mail.120.co.kr

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:03:a6:9c:3f:52:81:18:c1:50:1d:d4:b4:ad:5d:d3:3a:3c 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): 03:03:a6:9c:3f:52:81:18:c1:50:1d:d4:b4:ad:5d:d3:3a:3c
Serial Number (int): 262579168025982250647880061976957460625980
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 23:38:2f:01:40:15:e7:d1:4f:d6:24:ee:e0:09:61:55:26:18:1a:99
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 03:ae:7f:3c:73:13:63:ae:00:b2:e3:7f:c8:b2:0b:ff:25:a2:8c:ff
Fingerprint (sha256): 91:7f:34:92:3e:37:5e:b8:e7:78:56:5f:ce:5c:6d:89:37:90:d1:57:d6:1b:c6:25:f4:51:69:05:5a:54:5d:a5

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check 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)
www.120.co.kr
mail.120.co.kr
mail.120.co.kr
mail.120.co.kr
mail.120.co.kr
www.4rangg.org
mail.120.co.kr
mail.120.co.kr
mail.120.co.kr
mail.120.co.kr
mail.120.co.kr
mail.120.co.kr
mail.120.co.kr

Certificate

The complete raw certificate details for mail.120.co.kr in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtX9Rh13/T0oBt8genOc1
YieXARwRk7Z9OzPgul+LepfHW8oa2Y5V1jD80/tngw+/B9cC/EQocb4jP5U2rsiI
f5IZHRmaQXDUn5I6t0Eoa8gbQv+mkIU6FZ2wOvb7kNZ6R0rdDDCbvxk3qJ/ybOao
EcE0jfAMCelRT2lpFF/xcI35xC7+T50xdGF+nF/3NIuLzPd8eeTj+c/+m+eP8N8G
VWjMLZMFSZfKpMoagXcXFMzsW+rIfGIP1TrhdONoJUtVHhgYL/ii4nRp+nCpaGQm
XFUfOLLeXp39VTuqT/Z5inSudvpN8tv0UXYCqBZ1lJs+kjW2w1j26CrOHQz8nXE1
eQIDAQAB
-----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 262579168025982250647880061976957460625980
 . . . . . . . . [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 2019-02-01 15:02:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-02 15:02:57 +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 22911916277253241397088355794738212674654283923848686991171249814815898701353811295291448776202463617762485673144278010181658398524308834011531805899774365513796866648964873395681783858876937239552532073233751714695298914127389042629566249336393500079977136116462674152286182831917942505084416121681933489466564506944240659747680758310071779513119074656512879905410619518764077270572733525270491735642801434506359259943061321970991714438957155345678948837508219782781532061511274295660677554784652906661502250428741211447514234271977673192716120021458168946967643120437381336046054468140110399345460221537532098196857
 . . . . . . . . . . . . . . . . . . . . [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)
							23382f014015e7d14fd624eee009615526181a99
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc5600000168a9cc7daa0000040300483046022100c1b037afc2d3592d7d0069c95dbc0c5ddd156dfc8aa0af94c340b5c58810fd15022100df8ec0bec60b5d26219770cfeb87bd3ad8600c4818700b91dc4845bb1a5d0bf700760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d00000168a9cc7db50000040300473045022100f9da98d0d0fa0ea77fde0a67ae26de9b7bda6f6cb1cd9ea37a3a4f1afcf9d6600220188d7ece11c96ff81cb52f2a2edbf330d2270c7aa3e27c4d20189a01413090b1
 . . . . [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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