supernova.com.sg

Issued by R3

About this certificate

This digital certificate with serial number 03:81:ef:f0:3b:d2:f4:9c:ac:fa:a3:51:6b:69:37:04:60:74 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=supernova.com.sg

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:81:ef:f0:3b:d2:f4:9c:ac:fa:a3:51:6b:69:37:04:60:74
Serial Number (int): 305552215983696229474040703436681556287604
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 77:66:52:66:f8:db:f5:9f:cd:f5:f6:7d:79:64:72:b5:e7:92:87:c1
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 1d:81:db:2d:4d:9d:1b:38:a1:39:c7:81:a3:f8:91:0b:ed:a0:d0:c4
Fingerprint (sha256): d0:bf:90:52:6f:bc:6c:03:95:6d:3a:38:87:48:c1:00:da:a4:93:43:a1:e1:e2:88:43:85:00:a2:61:e6:61:8d

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

Revocation information

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

Check the revocation status for certificate supernova.com.sg

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for supernova.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

*.supernova.com.sg
supernova.com.sg

Other certificates including the domain name supernova.com.sg

(limited to 100 certificates)
supernova.com.sg
supernova.com.sg
supernova.com.sg
supernova.com.sg
supernova.com.sg
supernova.com.sg
*.supernova.com.sg
supernova.com.sg
*.supernova.com.sg
supernova.com.sg
supernova.com.sg
*.supernova.com.sg
supernova.com.sg
web.supernova.com.sg
*.supernova.com.sg
supernova.com.sg
supernova.com.sg
supernova.com.sg
*.supernova.com.sg
supernova.com.sg
supernova.com.sg
supernova.com.sg
supernova.com.sg
supernova.com.sg
*.supernova.com.sg
supernova.com.sg
supernova.com.sg

Certificate

The complete raw certificate details for supernova.com.sg in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFATCCA+mgAwIBAgISA4Hv8DvS9Jys+qNRa2k3BGB0MA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yNDAxMjcwMjQ2MDdaFw0yNDA0MjYwMjQ2MDZaMBsxGTAXBgNVBAMT
EHN1cGVybm92YS5jb20uc2cwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB
AQCu013yt9vfzSFmkQTflX8WJQmO+kGIuNE/2fsrh7Rtp7Lpq7Ms20LaN6MZ9wkz
prTRmQXQUMqTUVrK7cHTZEeQ/a/I1tKf2HW+mECfkhmz+x6rg83XRN/cbwX1o5m2
odYiiGK/GnHHLXsg4yfORiv7t9qyR2LVf9Yw/lGSQZcVhVOlMpQ/JwiUxqUsEBya
jihSowkV7SFJLhIe7wkeTt6BmFljnwhuoRl74Q2O2ze3LEuStLZ3PuvqibYwbkDc
2f/V7gZKJZpdz4Yqepf6cpJnlpkm/IQTHBlsBnvg0XLbSSwKwGNB+0dY3dNqI2mG
8dOksOGExWAvD4gEWxksZAFRAgMBAAGjggImMIICIjAOBgNVHQ8BAf8EBAMCBaAw
HQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYD
VR0OBBYEFHdmUmb42/WfzfX2fXlkcrXnkofBMB8GA1UdIwQYMBaAFBQusxe3WFbL
rlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDov
L3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5v
cmcvMC8GA1UdEQQoMCaCEiouc3VwZXJub3ZhLmNvbS5zZ4IQc3VwZXJub3ZhLmNv
bS5zZzATBgNVHSAEDDAKMAgGBmeBDAECATCCAQQGCisGAQQB1nkCBAIEgfUEgfIA
8AB3ADtTd3U+LbmAToswWwb+QDtn2E/D9Me9AA0tcm/h+tQXAAABjUkGVDEAAAQD
AEgwRgIhANAcXcZz6Upjtu68dC87PeahkEa+B476bTLhveooJIyoAiEAu2jT8VKG
Zn05to2zgfRRhrYM/JLAOLtLakH2smoDmAcAdQB2/4g/Crb7lVHCYcz1h7o0tKTN
uyncaEIKn+ZnTFo6dAAAAY1JBlSHAAAEAwBGMEQCIBY/7oMkLPiqbMK9ZiyLaFDV
sjR8PoY0ulU8sAqqaqX+AiAD7S4s+Y2HLFw1ZtXSCJcC3XekPl25PKx0B2Jge6pI
1TANBgkqhkiG9w0BAQsFAAOCAQEAD/pak8NmkfHN5hTlBU/MPZ3csSgt1Hp2hQoc
qSSlCELHeziclbbkDnr9d+O89aGDj6BHBO9LWjoLhUZVXA/lczt26i+kqAUIO4MF
uuBzcZEEHxCxtfFT66fk8Gt+vUcX9Rt5+G6CecJ0fE7R2jYJzoz8mTSkEItyRozG
ID8bsTDwlhOmMhQ3OlgwBKuBzFT57sc+R9q6wA+X04BE7Rup054dljjbBsE8bG60
mLQDkbiGOlAV7923mR+azIP8EAoMI/eYljp7z6lUXEp4YsEUlVUAYK4bFsbbk61o
+bkoVSeOFLM3WmO/QUbiaJp89D21HOgR7TFU7BynW7W9kR0k1Q==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArtNd8rfb380hZpEE35V/
FiUJjvpBiLjRP9n7K4e0baey6auzLNtC2jejGfcJM6a00ZkF0FDKk1Fayu3B02RH
kP2vyNbSn9h1vphAn5IZs/seq4PN10Tf3G8F9aOZtqHWIohivxpxxy17IOMnzkYr
+7faskdi1X/WMP5RkkGXFYVTpTKUPycIlMalLBAcmo4oUqMJFe0hSS4SHu8JHk7e
gZhZY58IbqEZe+ENjts3tyxLkrS2dz7r6om2MG5A3Nn/1e4GSiWaXc+GKnqX+nKS
Z5aZJvyEExwZbAZ74NFy20ksCsBjQftHWN3TaiNphvHTpLDhhMVgLw+IBFsZLGQB
UQIDAQAB
-----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 305552215983696229474040703436681556287604
 . . . . . . . . [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 2024-01-27 02:46:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-26 02:46:06 +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 'supernova.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 22069694008982706432516377901458603365796267262238107590085409974945154887246035736203187474481138453819757511021094713746647073522103281589504247471334070810812031999317558200778052816542545410174932752236774724837366200904185036394330103414284012767382108381053775069825397232042005003942130321153995963022968027976046874918375672261513750292626322857865059657083537708074269678651641665269791827273908330661263704972853257068088105351815855888746595518306759866344334877943153257060775054255067632085389404327938537164783226733405984353677617951520345945492223810127778557885634740101112186329104002672991521734993
 . . . . . . . . . . . . . . . . . . . . [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)
							77665266f8dbf59fcdf5f67d796472b5e79287c1
 . . . . . . . . . . . . . . . . [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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.supernova.com.sg'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'supernova.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d490654310000040300483046022100d01c5dc673e94a63b6eebc742f3b3de6a19046be078efa6d32e1bdea28248ca8022100bb68d3f15286667d39b68db381f45186b60cfc92c038bb4b6a41f6b26a03980700750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018d4906548700000403004630440220163fee83242cf8aa6cc2bd662c8b6850d5b2347c3e8634ba553cb00aaa6aa5fe022003ed2e2cf98d872c5c3566d5d2089702dd77a43e5db93cac740762607baa48d5
 . . . . [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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