mail.haitech.co

Issued by R3

About this certificate

This digital certificate with serial number 04:38:a2:77:db:1b:db:09:29:d8:2d:d9:27:df:ed:3f:bb:b6 was issued on by Let's Encrypt.

With 4 subject alternative names this certificate can be used to secure multiple fqdn's. 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.haitech.co

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:38:a2:77:db:1b:db:09:29:d8:2d:d9:27:df:ed:3f:bb:b6
Serial Number (int): 367720913537311514439031825193546360535990
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 56:5b:a4:8c:57:94:c4:fc:96:83:58:2f:c2:23:06:4a:98:36:eb:9a
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): e4:38:c1:fb:35:81:81:0b:f6:70:80:34:1c:f7:4b:15:05:cb:dc:ac
Fingerprint (sha256): 96:b2:6c:1a:6e:57:ca:0c:0b:87:dc:6f:3f:fe:38:d7:be:c6:34:1b:77:80:ec:c4:79:b6:bf:5c:3c:aa:c2:a2

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate mail.haitech.co

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.haitech.co

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

haitech.co
mail.haitech.co
ps.haitech.co
www.haitech.co

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haitech.co
haitech.co
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mail.haitech.co
haitech.co
jianhua.me
haitech.co

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuYv8p7MkMB4HNbUIRD+v
fXv+YMlDrHO8KucFDUKpjPSE8ZTnReni1PB56kKISWGEqbNkhOl0IQtSGuC7arDA
3XRHJfNZXbMnteY9LJFcTEDjgdgXPTRyH3r0byC2IQvbq8cPqCW0viF+V5HVUjDK
/tRKTgy+lgUOnwpX1xQUeWgRfcauDuo2yGDcPwISgGIIU7kFKFLjHmRDI83876LN
g6AE1z1CeH7fVNz+gcTaaUIvOvjniTSlo8BBYPILsJIIcR6Lg3aUp84+VRorwY9R
7Kw3R0JAA4U68KPIFE2dujuTv1s3dAQwV/wVm6ZblvJqC72VXHKAh6vP5jeVcppB
OwIDAQAB
-----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 367720913537311514439031825193546360535990
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-08-06 02:08:21 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-04 02:08:20 +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.haitech.co'
 . . . . . . . . [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 23423116548612856238498371631617778393152359336883781900270995426747327791424261230306982683369284636393106365675913393678433581321480862512616045804941507626444732005592827183424278744920651191839259338920335457623723616111830139704756854512683090149545561062126647490315204334621712447138314513659622290078103003212640814082271302729272358196523499984797087516911320324941374383981766579412624448258211188706386510287404518059927723362921865709194735864728101694861319309301723470404523192051974950422967047760687317754136954263674524113930039371140695185922164484671331206490982242424882058877764689399384542691643
 . . . . . . . . . . . . . . . . . . . . [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)
							565ba48c5794c4fc9683582fc223064a9836eb9a
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (62 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'haitech.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.haitech.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ps.haitech.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.haitech.co'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10077007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000189c8d139630000040300483046022100d5a91a2ff2337126418b78e4537f9ce5579392fd614dee805cf37df9efdac76d022100bdac560f8e890d33fa3ff3007dfc45d57567e806b67e93f63fd636c8811eaec4007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000189c8d1398b000004030047304502206d453ffebb475d58b6ef2d466b2674dd8741179e78b37082b118f4fc3ba3ff93022100c074075067affc0b5917a93c9dc7bf679ba79090f53d35d1e88d0a488b2fe7a9
 . . . . [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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