i-concept.com.sg

Issued by R3

About this certificate

This digital certificate with serial number 04:f8:d9:1b:46:1b:95:db:1d:27:94:0c:ee:3f:d8:64:39:cb was issued on by Let's Encrypt.

With 2 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=i-concept.com.sg

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:f8:d9:1b:46:1b:95:db:1d:27:94:0c:ee:3f:d8:64:39:cb
Serial Number (int): 433127754812488443512577259104723116767691
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 6e:d1:c3:d2:cb:3d:fc:6b:9f:29:0d:24:d5:ef:e3:34:40:31:03:81
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): b4:19:7e:a6:c6:5f:48:3a:cf:37:fa:cb:1a:6c:40:c5:bb:67:75:4e
Fingerprint (sha256): bf:7f:c1:e0:b3:c6:f9:d6:82:8a:d1:ab:dc:b2:d7:e5:f5:27:e2:7c:7a:a1:69:5b:86:01:04:c6:d1:e6:76:b8

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

Revocation information

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

Check the revocation status for certificate i-concept.com.sg

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for i-concept.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

i-concept.com.sg
www.i-concept.com.sg

Other certificates including the domain name i-concept.com.sg

(limited to 100 certificates)
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
mummyguru.i-concept.com.sg
mail.i-concept.com.sg
i-concept.com.sg
mail.i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
mail.i-concept.com.sg
i-concept.iconcept-s1.com
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
mail.i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
mail.i-concept.com.sg
mail.i-concept.com.sg
i-concept.com.sg
mail.i-concept.com.sg
mummyguru.i-concept.com.sg
mail.i-concept.com.sg
mummyguru.i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
mummyguru.i-concept.com.sg
mail.i-concept.com.sg
mail.i-concept.com.sg
mummyguru.i-concept.com.sg
i-concept.com.sg
mail.i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
i-concept.com.sg
mail.i-concept.com.sg
i-concept.com.sg

Certificate

The complete raw certificate details for i-concept.com.sg in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlaA67BakSVBxlWqHefsu
G0ygwTlybvSm8A3ZqSV/cKHsSID5I3/RYT4/vNgGJzrryhHjHVjevXrXdkZ4oGSs
jGkL2zgt5FRL/jus1tzD7khJjfdIlPa4SqxR8hYzBHjs+8r3i/4rFjb6WcWcQ4cK
Nddthnayf+Z5Fl66sDXF/6EBO9OBXY4km2q8pAZ2srFoooBBlEvF+mSCL0KztVEX
6cTWNWo7a9YWEMmilazGDuuwI5CV3U7X7ma9yXvvPRNxuasc6Uc6ay7CWdmy21ar
9YEVgn9Zv39QsgEdYz2xWNmDT4VSS3igK3WISwk8zMCQadLi0dILGQtOX2VUH2BQ
AwIDAQAB
-----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 433127754812488443512577259104723116767691
 . . . . . . . . [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 2024-02-16 04:29:27 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-16 04:29:26 +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 'i-concept.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 18888519879100582290949776116223777313904220689347342806619247311595975553090462237201747842368362781669350171203457880233234711760475103593701570065679673279354957721871175495423758746439168477434282399704320243301943874303073684004587945670586816571018577394059684091685527153423486357880370197918083145297710173684096320654191280490825503207951026218461239719636171576673609876602370784492987513526434034854271600059511299634343685468537587292238762647523507218177325557242921397518389874391311025064890994963819618810640825910975769888354890831959298407866879812782306653867526442843649316057848174854696068993027
 . . . . . . . . . . . . . . . . . . . . [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)
							6ed1c3d2cb3dfc6b9f290d24d5efe33440310381
 . . . . . . . . . . . . . . . . [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 (42 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'i-concept.com.sg'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.i-concept.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 (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)
							00f100760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018db0641f4f000004030047304502204459e28c13e9d3bf68aac6fe7093e137e6755b5d82d62fb87f5000f088d14afe022100d3133101fe9876d3ecdc92da9793eaf9a0b3dce03b6efad5de970934e3b7faee00770076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018db0641fa20000040300483046022100b4120382b44a22a2cb864fc9175f466981bacd8e07ebf57432c00f1bdd7d8b9a0221008d3c602bb3f22eec45cd815f54b0bafbb0b42d6a57c67a06f1f192e5494de421
 . . . . [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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