mail.aucklandcitylibraries.com

Issued by R3

About this certificate

This digital certificate with serial number 04:47:9b:f2:b9:47:74:36:46:9e:0a:1a:49:d2:76:f4:60:c1 was issued on by Let's Encrypt.

With 7 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=mail.aucklandcitylibraries.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:47:9b:f2:b9:47:74:36:46:9e:0a:1a:49:d2:76:f4:60:c1
Serial Number (int): 372816482411520986971667688569551268896961
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: f2:b6:dc:a3:d2:f7:ec:b6:6c:9d:7c:2a:68:a4:3e:36:03:60:db:03
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 01:17:13:08:0a:12:2f:34:ad:5c:27:23:ce:b3:5b:68:31:be:30:fe
Fingerprint (sha256): 0f:4a:82:ec:08:4a:83:f5:83:a5:8c:e9:5c:0e:a7:88:cc:55:02:de:43:66:0a:e6:80:78:11:fa:1c:28:34:4e

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

Revocation information

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

Check the revocation status for certificate mail.aucklandcitylibraries.com

7

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.aucklandcitylibraries.com

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

aucklandcitylibraries.com
autodiscover.aucklandcitylibraries.com
cpanel.aucklandcitylibraries.com
mail.aucklandcitylibraries.com
webdisk.aucklandcitylibraries.com
webmail.aucklandcitylibraries.com
www.aucklandcitylibraries.com

Other certificates including the domain name aucklandcitylibraries.com

(limited to 100 certificates)
nzchinesejournals.aucklandcitylibraries.com
aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
mail.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
webmail.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com
www.aucklandcitylibraries.com
mail.aucklandcitylibraries.com
nzchinesejournals.aucklandcitylibraries.com

Certificate

The complete raw certificate details for mail.aucklandcitylibraries.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxIq+sDwuMXTX8NJMmb7I
YcR7E5VPuWrYNq61Coqdrm1XW2bKBVXWKcOFeiSbmsfBGMY8cNreAfZhg0q/HFwz
fVHNUIDbgR8Ee/JwvQ80jZZRNXqM1ZTS6HP74xLOcc/y3YsGV3bZKnjshmDLunQI
3VpjLPisGyaU6cH7G3WJlqvu6KdC4nftz1B80KxcxHH+3JcwMqLA9Roqca3YDILL
AekWodrn9bzhHBiXwFzASODCr5JeZ7o9EgvX9T0UlsppsiZqOwJcwxkkHhNscDRi
xuOVeO2FN0sW5SochYNcyWIAPFSN8X364N8vUSI2yfKL/tuPyxSUmYoqduSgR712
LQIDAQAB
-----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 372816482411520986971667688569551268896961
 . . . . . . . . [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 2023-12-13 00:27:05 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-12 00:27:04 +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.aucklandcitylibraries.com'
 . . . . . . . . [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 24811125421976355471740976295100220673723229889888667126805376421367530598830992635871953880021097158978302682834620304449810693523302032871031894593359645969208045869627134302823180238698264978442680308203645616036649379294177684867705945902672555858316174138561260752912794774573322847984664243035232685019707324048398348197614246092549562524862260154519290710754540578169285389601170890160932752978309617925929381552553391812996047251754567838663781966494562525503229308077856829907854981985768202003711567238478774806110354006665690610944426641472483623278444658064518423528208843076324438632875379415029166994989
 . . . . . . . . . . . . . . . . . . . . [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)
							f2b6dca3d2f7ecb66c9d7c2a68a43e360360db03
 . . . . . . . . . . . . . . . . [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 (237 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'aucklandcitylibraries.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.aucklandcitylibraries.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpanel.aucklandcitylibraries.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.aucklandcitylibraries.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webdisk.aucklandcitylibraries.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.aucklandcitylibraries.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.aucklandcitylibraries.com'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c60c8daff0000040300473045022100b35860ec6741a21766435603f1a23947aa1e09dde1b33cc6891a0f1f1645658d02201afa0a6cf2122502e8f566b5f55c61931b4738c2b4368f6fc0d9abf84d04eed9007500a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018c60c8db030000040300463044022053a93c09190cd578063f77a3d2d1961ace2bdfe5b3ae057a88991624679fc2ac022065909242c20a89fe3c6d51aba3fc1ee1a43fed76668dd12c7da89ae04fab1923
 . . . . [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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