wildcard.gw68-220-ext.dpo.a-star.edu.sg
Issued by R3
About this certificate
This digital certificate with serial number 04:dc:db:22:db:bf:74:a5:0b:68:e4:7d:f9:ee:d4:e1:da:b7 was issued on by Let's Encrypt.
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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=wildcard.gw68-220-ext.dpo.a-star.edu.sg
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:dc:db:22:db:bf:74:a5:0b:68:e4:7d:f9:ee:d4:e1:da:b7Serial Number (int): 423602546375833917336464096480645867494071
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: f5:4f:c8:f1:c7:a8:63:47:c3:b1:a5:80:34:ca:36:12:51:07:7c:e1
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 9b:d4:4c:06:57:5d:62:a1:1f:29:00:fb:64:34:fd:c7:87:ba:c0:f7
Fingerprint (sha256): 11:99:f6:69:6b:a5:30:a3:40:1a:43:c6:67:6a:d0:e9:ff:05:0e:97:5f:be:6c:f3:4d:ae:d3:51:91:41:7a:9e
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate wildcard.gw68-220-ext.dpo.a-star.edu.sg
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for wildcard.gw68-220-ext.dpo.a-star.edu.sg
Public Key Algorithm
RSA
Key Size
4096
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
wildcard.gw68-220-ext.dpo.a-star.edu.sg
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Certificate
The complete raw certificate details for wildcard.gw68-220-ext.dpo.a-star.edu.sg in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGGzCCBQOgAwIBAgISBNzbItu/dKULaOR9+e7U4dq3MA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDAxMDcwNDM0MDFaFw0yNDA0MDYwNDM0MDBaMDIxMDAuBgNVBAMT J3dpbGRjYXJkLmd3NjgtMjIwLWV4dC5kcG8uYS1zdGFyLmVkdS5zZzCCAiIwDQYJ KoZIhvcNAQEBBQADggIPADCCAgoCggIBAMr9W07fw/YdvX3n7DvTWb2VbLsiqjri XyXm7aYnTOhNTh+yn3DoJxvDvzXKE5Pj9cw+R796Wh0v+oDiwX/3XEsK4ZryGV5K Vbe84atm9GdjdL14HNXi5Rm5V67+x2sojGuYV3HWKzD4y8KOp0XLItKXpiNZTa16 OMZhtZGMkrkxZWhnsBqtLK6NqWF0h+Q93oCbJ+Cgr7ruzqvGh8tcipsjsKQcrphB 2dzz/B5Oga3VJj30SdMXbsyJe8ti34FXjoHBxdloakHXvd84XaCp3LB2q+PfsZ1Q vCX1nS8uRcxdHskNL5CImroaec5jVOtEQfvJS/E3GaFHktF5jIWhzUayp9NevAkg 2brO3n8UQ+c6cwhH4himcP2cAunCbi3Dvl510uGDcIiVRhLQKnIIlsXhcE1abeha Jl3NwITCUKUHNwaJnONBUA6kH6alCJmmp6bGT2VDu6x9DgdELfKwvBvqmzrB2opf 4juXoa4XiMyW/zRv5G4hirmlj2RauS8VYTMubqdTDVIKRxt/maQ1e3X0/gkpCHrM ODPZfPk1BtPfFiOy9VSTJfDa8tKphntqHlIEgFdSQjQblEvkv1JJyZtrlADiDNyP v9bZpDdMQOjVRUmkU11Jp8UNui6jvd1I2CK8ff9aeJK0DhZa8sC9Jg8Ucrp064zb nOlkzqwVZdERAgMBAAGjggIpMIICJTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYw FAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFPVP yPHHqGNHw7GlgDTKNhJRB3zhMB8GA1UdIwQYMBaAFBQusxe3WFbLrlAJQOYfr52L FMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDovL3IzLm8ubGVu Y3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5vcmcvMDIGA1Ud EQQrMCmCJ3dpbGRjYXJkLmd3NjgtMjIwLWV4dC5kcG8uYS1zdGFyLmVkdS5zZzAT BgNVHSAEDDAKMAgGBmeBDAECATCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB1AEiw 42vapkc0D+VqAvqdMOscUgHLVt0sgdm7v6s52IRzAAABjOJp7igAAAQDAEYwRAIg LsPLwlyn10JR8VFbRhiS8pRj2ZO3QOFKk1WemV2YXJQCICF/4M/9dZ5AtW+4/8BI nDPzwV5u9H0IlD3A9YGng61xAHcAdv+IPwq2+5VRwmHM9Ye6NLSkzbsp3GhCCp/m Z0xaOnQAAAGM4mnutQAABAMASDBGAiEA89g8sh6Rxuqw8NXbICp2BTRq40I4w+34 qrOBy5rJrXkCIQCfXTDRXoXEGrCjj5EHlQTHz9ABYa83UfRlNk5PsvUP3zANBgkq hkiG9w0BAQsFAAOCAQEAGlwj47qyEwZjhvuzDNiksgRHzmZPUEfrvefh7CX8kLXR HQGUqlu7EMZWgyWF9cQcqRXCRae/OhBvPuuAjplY0SeSy8HM8pNNwpp/dK/63IMX KTMHLKxik3V00lwE2qljMvhPTfmiRRxkyWYN2omfbBYNTUS3r4vTIO3/A/5bvLa1 YxdZiYXYhAPZnE8BlGv6SggFAy4xJrm1ozNK1vUqeJ9jmBJ52za5zAYZI7AFM34M 1okz8NOsS5kR5QIzi2G8flDQSjcos3xyNIg3cUjWuKP+R7SbFF4T5wuMbLAXkUlr NjKBel5lldJ5iKgIOFz30GwFo6gNhGw03GU97ilfLQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyv1bTt/D9h29fefsO9NZ vZVsuyKqOuJfJebtpidM6E1OH7KfcOgnG8O/NcoTk+P1zD5Hv3paHS/6gOLBf/dc SwrhmvIZXkpVt7zhq2b0Z2N0vXgc1eLlGblXrv7HayiMa5hXcdYrMPjLwo6nRcsi 0pemI1lNrXo4xmG1kYySuTFlaGewGq0sro2pYXSH5D3egJsn4KCvuu7Oq8aHy1yK myOwpByumEHZ3PP8Hk6BrdUmPfRJ0xduzIl7y2LfgVeOgcHF2WhqQde93zhdoKnc sHar49+xnVC8JfWdLy5FzF0eyQ0vkIiauhp5zmNU60RB+8lL8TcZoUeS0XmMhaHN RrKn0168CSDZus7efxRD5zpzCEfiGKZw/ZwC6cJuLcO+XnXS4YNwiJVGEtAqcgiW xeFwTVpt6FomXc3AhMJQpQc3Bomc40FQDqQfpqUImaanpsZPZUO7rH0OB0Qt8rC8 G+qbOsHail/iO5ehrheIzJb/NG/kbiGKuaWPZFq5LxVhMy5up1MNUgpHG3+ZpDV7 dfT+CSkIesw4M9l8+TUG098WI7L1VJMl8Nry0qmGe2oeUgSAV1JCNBuUS+S/UknJ m2uUAOIM3I+/1tmkN0xA6NVFSaRTXUmnxQ26LqO93UjYIrx9/1p4krQOFlrywL0m DxRyunTrjNuc6WTOrBVl0RECAwEAAQ== -----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 423602546375833917336464096480645867494071 . . . . . . . . [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 2024-01-07 04:34:01 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-06 04:34:00 +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 'wildcard.gw68-220-ext.dpo.a-star.edu.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 828125621447612127988403759358759461278680571250221877415173368089056127847547957238905346021013467801840815338385093077191578309050597171473914037433009623521303872829738961324706096978851248238447706608738508913986695946975654652991231857408165949948186241616819774326974934331772664898589814040431619049536204817903433526975528696223057169789520440570491046465555291694521794038866203763259699757489514074579471841653483613119477358062463693330908892443837671099004672713717873891988098271543300281223094642824238239562813465582870028433019328322950372722139299511943647103648007618135752231347112808022027240590594631530168515825409828053429192961506184700368125920256119657379324143666477499390683761923811860381110399244552021131490921618266378909397119925007338289905919266622617727685037540535884930669669217350823193211826102472219356783978425511345472897196978890673891493770915665823168817611822919178008091246819104304177331872356027183070578895273194306900060125341078793248897893832877468513812490461466875495783082911209698285181647989569381934712916879096164620166488426970711489703629075378181800806622114008013803635227785204098036693325530655036982783380191111469293577928050012021565327933970788012185363088265489 . . . . . . . . . . . . . . . . . . . . [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) f54fc8f1c7a86347c3b1a58034ca361251077ce1 . . . . . . . . . . . . . . . . [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 (43 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'wildcard.gw68-220-ext.dpo.a-star.edu.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) 00f000750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018ce269ee28000004030046304402202ec3cbc25ca7d74251f1515b461892f29463d993b740e14a93559e995d985c940220217fe0cffd759e40b56fb8ffc0489c33f3c15e6ef47d08943dc0f581a783ad7100770076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018ce269eeb50000040300483046022100f3d83cb21e91c6eab0f0d5db202a7605346ae34238c3edf8aab381cb9ac9ad790221009f5d30d15e85c41ab0a38f91079504c7cfd00161af3751f465364e4fb2f50fdf . . . . [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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