zonetel.com.sg

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:00:78:04:dd:cc:b3:2a:4e:e1:d3:c1:2b:9b:26:fd:23:88 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=zonetel.com.sg

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:00:78:04:dd:cc:b3:2a:4e:e1:d3:c1:2b:9b:26:fd:23:88
Serial Number (int): 261496390422592880508012564225344375956360
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f0:9c:33:0d:52:b8:e2:f0:e7:c4:a9:b7:cd:e5:5d:0f:db:56:5a:fe
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): c5:5f:40:8e:96:a5:e1:0e:79:4f:14:84:f9:fd:31:2a:78:5d:5d:79
Fingerprint (sha256): b7:20:26:61:c4:96:31:74:a3:6f:4e:03:a2:67:35:97:24:a0:8a:88:bd:87:d4:a6:0f:5d:bb:a1:36:c0:d7:fe

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 zonetel.com.sg

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 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

zonetel.com.sg

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(limited to 100 certificates)
zone-aws.zonetel.com.sg
zone-aws.zonetel.com.sg
zonetel.com.sg
ipzentrex.zonetel.com.sg
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*.zonetel.com.sg
zone-aws.zonetel.com.sg
gelcccs.zonetel.com.sg
zonetel.com.sg
*.zonetel.com.sg
*.zonetel.com.sg
app.zonetel.com.sg
www.zonetel.com.sg
zone-aws.zonetel.com.sg
zone-aws.zonetel.com.sg
bizsolution.zonetel.com.sg
zone-aws.zonetel.com.sg
ipzentrex.zonetel.com.sg
zone-aws.zonetel.com.sg
*.zonetel.com.sg
zone-aws.zonetel.com.sg
www.zonetel.com.sg
www.zonetel.com.sg
zonetel.com.sg
bizsolution.zonetel.com.sg
www.zonetel.com.sg
gelcccs.zonetel.com.sg
bizsolution.zonetel.com.sg
zone-aws.zonetel.com.sg
zonetel.com.sg
*.zonetel.com.sg
app.zonetel.com.sg
zone-aws.zonetel.com.sg
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zonetel.com.sg
mss.zonetel.com.sg
zonetel.com.sg
zonetel.com.sg
zonetel.com.sg
geli.zonetel.com.sg
app.zonetel.com.sg
zonetel.com.sg
zone-aws.zonetel.com.sg
www.zonetel.com.sg
zonetel.com.sg
zonetel.com.sg
*.zonetel.com.sg
zonetel.com.sg
zonetel.com.sg
app.zonetel.com.sg
www.zonetel.com.sg
zone-aws.zonetel.com.sg
*.zonetel.com.sg
app.zonetel.com.sg
zone-aws.zonetel.com.sg
www.zonetel.com.sg
zonetel.com.sg
zone-aws.zonetel.com.sg
zonetel.com.sg
bizsolution.zonetel.com.sg
gelcccs.zonetel.com.sg
app.zonetel.com.sg
zone-aws.zonetel.com.sg
zonetel.com.sg
www.zonetel.com.sg
zone-aws.zonetel.com.sg

Certificate

The complete raw certificate details for 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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlg6D6a4bjJjKcuDcNZHH
8oDNa0/TsapAcr0v4tABB/2X6hlDdLVQoSJ144kzzF9IJqChpAbT6QKX6MUW2VIH
mABi9lU0Lyfb6i49qL9/BmgxkYiU2r7zYDuSDtrkSAJaw/RYEkDz6xo2e1h+wrPQ
P9hY6GI3YHN5S5FRJg5EmpPf24bz4CRYt4iyp+7QAd/gTqZWS1feqlHVCV3EDymp
MqZ8W4DwgEGeQ/ISf6kCgXT+XvRHP4O0kXNhNfJH90zhsf/Ma9v3sXX8D1vOuy+/
6QtqnGZv4YKU8ZAQnNS29vVx/o/qwQOyFpvRDbCcHVJWVlIdOV4RTETwc3mrNzrh
cwIDAQAB
-----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 261496390422592880508012564225344375956360
 . . . . . . . . [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 2019-11-16 10:05:13 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-14 10:05:13 +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 '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 18942903498432121756298141664524412781946319897303899350960397528875919725015887031029299628534607274715508955970565319713272635984927027825001634642003390580897748175670858793369669442358552358102751757768294548682741390448203414804391559699883698140289546550111562218891050697973975848751285988594666010937093610140967810700666926376514015540868195311223786919890965193440556161992112962447131832476805348160270739944227527210550455323855415435402135833446570819616492587240865991899098592381725794889090483179731231621323396248446496018702149484038292713065499822220519656093546322524227832299771101260086406472051
 . . . . . . . . . . . . . . . . . . . . [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)
							f09c330d52b8e2f0e7c4a9b7cde55d0fdb565afe
 . . . . . . . . . . . . . . . . [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 '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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f20077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016e73e368050000040300483046022100fba121ba50702ea5e139f5c79031b2304c221201661e7af3efe3be694ae01a1b02210084d3f2ddf5afede0584866bd8dc2d52214513b87363a1e10a007a1fad34c2d1f00770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016e73e368300000040300483046022100a04cb70c0a27b84e152944ab344f5a4e7bf751f4f77490a56cabff9292d84e7a022100f282e803d3bc232783caa2585e4f3ac094b263602027e3b9322fe82c1082eb89
 . . . . [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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