zone-aws.zonetel.com.sg

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:80:5c:f7:f1:c0:1d:ef:a9:8a:1a:70:fa:3c:36:07:f9:2d 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=zone-aws.zonetel.com.sg

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:80:5c:f7:f1:c0:1d:ef:a9:8a:1a:70:fa:3c:36:07:f9:2d
Serial Number (int): 305016577137378920107889569018538046781741
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 74:c4:9b:d0:a7:15:92:f3:a2:dc:08:9b:e3:bc:fb:f9:45:74:40:2c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a4:38:ce:5b:66:0a:ff:87:06:58:2c:fc:20:dc:71:af:c1:6f:8f:da
Fingerprint (sha256): 69:18:4a:9c:a5:5f:6a:83:57:c0:4d:83:e5:7e:99:f0:e8:ef:0c:9c:8d:4c:ff:d7:68:76:9a:c9:ac:43:81:49

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 zone-aws.zonetel.com.sg

7

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for zone-aws.zonetel.com.sg

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.adlersecurity.com.sg
mail.veribus.com.sg
mail.zero1.sg
mail.zonesolutions.com.sg
mail.zonetel.biz
mail.zonetel.com.sg
zone-aws.zonetel.com.sg

Other certificates including the domain name zonetel.com.sg

(limited to 100 certificates)

Certificate

The complete raw certificate details for zone-aws.zonetel.com.sg in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAgsC+k7a93cUlrTeoj841
SNDBGjgk8nDuD/Af+GUyyp05V0h5cFjNK6F65HFI3qmIVknfSWm0hVlIc/RUBA+k
zRndOiQ3QyWFgAxrnrdS8E/jG8mSybzIPrsr58EKywJk8XMWDkevFzOHX/pDGXHt
fwykUq85wLWvhQhiljzg6IIDRvUPIVxuKWsTUzIAiH2E6tUxzIlAy6ZSMX+3Y2MK
bkFVFUH/3UguUXF8f9TZRpKtwwRKF9WYDl4ku1RK/Z6qs1lV67sYztKCalF039D3
81+8jIPRnrh4CsqinT0jTZlNUJPVBHknGSSru50BIFu44kibm4MKMH1uU1qttRHA
vQIDAQAB
-----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 305016577137378920107889569018538046781741
 . . . . . . . . [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 2019-12-01 11:02:29 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-29 11:02:29 +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 'zone-aws.zonetel.com.sg'
 . . . . . . . . [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 16506025472065311317867599885442247295483903273994997055271526869972671592132085989510348045821618187830124765486178589381695411198618838986827335450016523014001138193208027834632844575623769422919441874866798033008445033749202240261893219230009187728699262626477084006179911440420614733984849212772392727620852098582959938679078939929482438833413669412042700522455673451974930026843650377666423633143007964992261888680294108175073184535543998333658370518722011071214924776161837454556088347595077449598914710556724787147234116698645533479007344415340695752496730538450579560433138936858446981082245480255531661770941
 . . . . . . . . . . . . . . . . . . . . [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)
							74c49bd0a71592f3a2dc089be3bcfbf94574402c
 . . . . . . . . . . . . . . . . [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 (157 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.adlersecurity.com.sg'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.veribus.com.sg'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.zero1.sg'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.zonesolutions.com.sg'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.zonetel.biz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.zonetel.com.sg'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'zone-aws.zonetel.com.sg'
 . . . . . . . . . . . . . . . . [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)
							00f000760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ec157391f0000040300473045022053faa165be5f27de3d5694e688796beec09d7539fc3f9caa92d0f5194e4fa5a3022100c0ed7474e321c48ec9971763713ccd9db990c2af86420c70916761703feb4f210076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016ec15739c10000040300473045022062bb9f7ad5aff5b8253f68f01cb8a93ca40a7e9c49ba7ceacbdf49051fe8c6190221008143df165e477d3e38f35be9271196ff1bcb615da3b95e4cfbcc940317a639de
 . . . . [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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