dcwadmin.imperial.ac.uk
Issued by R3
About this certificate
This digital certificate with serial number 03:95:44:01:f2:86:67:00:1f:aa:09:cc:e5:0b:35:ed:08:36 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=dcwadmin.imperial.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:95:44:01:f2:86:67:00:1f:aa:09:cc:e5:0b:35:ed:08:36Serial Number (int): 312129328081502378776256878452942723418166
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: b2:28:19:4b:a9:83:67:f4:c0:54:6b:c8:67:91:7d:2c:15:69:4b:a0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): d2:39:29:42:46:a8:b3:a0:2b:f8:8a:a1:7d:69:95:5e:89:8a:39:43
Fingerprint (sha256): 12:cc:fc:82:d4:21:5c:8d:a1:2c:09:e5:1b:b5:b6:16:27:fc:e7:eb:f3:7e:0e:cc:d1:0c:ed:a1:7a:e7:f0:ed
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate dcwadmin.imperial.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for dcwadmin.imperial.ac.uk
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
dcwadmin.imperial.ac.uk
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Certificate
The complete raw certificate details for dcwadmin.imperial.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF/DCCBOSgAwIBAgISA5VEAfKGZwAfqgnM5Qs17Qg2MA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDAzMDMwMzM2NDNaFw0yNDA2MDEwMzM2NDJaMCIxIDAeBgNVBAMT F2Rjd2FkbWluLmltcGVyaWFsLmFjLnVrMIICIjANBgkqhkiG9w0BAQEFAAOCAg8A MIICCgKCAgEAssMaLkXsRlXb48wec0X63uTXR9l81wf+gQnqqVoXbc3qQv0NqHTY VAm20tupQ/uYOuYdfbwY78vktyKnrDXtX1BtsbU6u2SFUmJuvmURClxeYUkLb9jM l43NmVoH0kBVG4OGxkXewXFshXlCZ0eRZts8JS7ulAKx622+tcMT1fT7Or7/q/6M 2gP3OhxjDbIROxHsl/Ql3hkYMR5dJDIqXKbZhR8wBg9cB0OeLnn8K6brvtA9OU6G mPLFpg7I/yZ7sU/ShXkfqoKSWooiQOJXIYXXaURfDgL4JqFLxyiZ6Y+4uAJ3mmEE C+peGUjwyHFne/DSchs2kT/ZFoRp3h8s0S3lHLFozxLLSio7WxF+hmkkvDhPZbm5 67cotMuNPUFnPM42BWLpF0oOmx7sTpURO+iASM7R2bFaxKrn0g6Zvs+QSJGL9amX oLcMV5n/RM5r0SvH5Eb75wOL5kyBbHk/RWeK3mdac0rbbQsuJsYxc5oo/0jntzXN uJooBI17Rxs/dKmoX5+9/b8URkSHH8gpVFYhBC+X3rxlmr2WW51nlY+jJvfPFgPa Z2wecO9Q3zterL8Pa2QVE1W6fYPV2pm6Pgp5EKIv6pf1B5TecCD2w3G7BSh9l9FY H8dc7GkUt35yGbctpYcIZv/5vEV3dUNqd/gn/Ity167uZNEUItWBYJECAwEAAaOC AhowggIWMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYB BQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUsigZS6mDZ/TAVGvIZ5F9LBVp S6AwHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlA5h+vnYsUwsYwVQYIKwYBBQUHAQEE STBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMuby5sZW5jci5vcmcwIgYIKwYBBQUH MAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8wIgYDVR0RBBswGYIXZGN3YWRtaW4u aW1wZXJpYWwuYWMudWswEwYDVR0gBAwwCjAIBgZngQwBAgEwggEFBgorBgEEAdZ5 AgQCBIH2BIHzAPEAdwBIsONr2qZHNA/lagL6nTDrHFIBy1bdLIHZu7+rOdiEcwAA AY4CmZeyAAAEAwBIMEYCIQD7By7tuNojRLMuEO51ooVTaN4LqwCbg+8S650YosSb iAIhAJeQag2li0KZa/0S4mrBkD1qCKeSpyZtw/QwHJc9amQzAHYA7s3QZNXbGs7F XLedtM0TojKHRny87N7DUUhZRnEftZsAAAGOApmXxgAABAMARzBFAiEA9o+18GRw kLXeevj0Zn3v1UXI8lv/6eorvyHFBsfFofsCICmqBP32FYlFnjvqST5HOGBEOJia aSGYejGRPi55Xop6MA0GCSqGSIb3DQEBCwUAA4IBAQA08pPe8DMMxi2deCvkDCuH N69/XDTSS5vF5x26mfBlVMIZ+cQpbZoiCrgNBUGTTB0al6wN44FcjN8xF5+ydqHe 83UcU+Z9918i84QIFNB9TIDiFKnXZQJLDY0LScjX8JwfUP6rH8hn/u2u3bWcnO79 xq72yOiDrYVo3hda2ZgHvgzeniTbRo+0jEgpSeSM9B+B9vWVxNFJdTtMauFC+McZ erN4yNX03c5vQSwLFhp7mNhfbNE8ZNEEE6G7pzdnM5mi1XcaUlaubeGCwdO7tOb2 X4BDjFU7lJo1q+3+vF5rueuXffEmIRSNMyUrN/+vQCIbHM4ZPcFIeeEsqc7fdSWm -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAssMaLkXsRlXb48wec0X6 3uTXR9l81wf+gQnqqVoXbc3qQv0NqHTYVAm20tupQ/uYOuYdfbwY78vktyKnrDXt X1BtsbU6u2SFUmJuvmURClxeYUkLb9jMl43NmVoH0kBVG4OGxkXewXFshXlCZ0eR Zts8JS7ulAKx622+tcMT1fT7Or7/q/6M2gP3OhxjDbIROxHsl/Ql3hkYMR5dJDIq XKbZhR8wBg9cB0OeLnn8K6brvtA9OU6GmPLFpg7I/yZ7sU/ShXkfqoKSWooiQOJX IYXXaURfDgL4JqFLxyiZ6Y+4uAJ3mmEEC+peGUjwyHFne/DSchs2kT/ZFoRp3h8s 0S3lHLFozxLLSio7WxF+hmkkvDhPZbm567cotMuNPUFnPM42BWLpF0oOmx7sTpUR O+iASM7R2bFaxKrn0g6Zvs+QSJGL9amXoLcMV5n/RM5r0SvH5Eb75wOL5kyBbHk/ RWeK3mdac0rbbQsuJsYxc5oo/0jntzXNuJooBI17Rxs/dKmoX5+9/b8URkSHH8gp VFYhBC+X3rxlmr2WW51nlY+jJvfPFgPaZ2wecO9Q3zterL8Pa2QVE1W6fYPV2pm6 Pgp5EKIv6pf1B5TecCD2w3G7BSh9l9FYH8dc7GkUt35yGbctpYcIZv/5vEV3dUNq d/gn/Ity167uZNEUItWBYJECAwEAAQ== -----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 312129328081502378776256878452942723418166 . . . . . . . . [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 2024-03-03 03:36:43 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-01 03:36:42 +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 'dcwadmin.imperial.ac.uk' . . . . . . . . [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 729285815250696466579833979096533535899139819550489423914605683265719707659506986686077606158477638489020634242529701718472104044865170303615186615292759413887523044770599663213359379628548567235703643556030739215576561725689416690942115621088176772162145124688518767888903600371392842025081176850139094823286017293528298534883921587368599523017346738574529831498659928359181702408372650086022558438420196717068942536099843385333724064670889465310818994966679078462934981392921184511628040146359250068430497484631784366760367200035387980301430081311054828356840933961931422831059249742453949658213249524313423684913212769760417847915719553073422184982197841774942869328059821514457696036439190570950792041197378603644327873453122122609985988155330283089245769022778889053481705121835701887627161088841762689177245804269888060617274262129751007344250166154611177825868275217541769438595501627250753618181063452595536862451187208578733302038616964824526762892434956806998026360064795038932699397890439986804007899965993316329516585122433375046808337107257302026311304324579849198632674868684525770637778628975376768943432693760855741517417269005673689742886643045226816674039150752200626674768283678459974881568222929013739171770097809 . . . . . . . . . . . . . . . . . . . . [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) b228194ba98367f4c0546bc867917d2c15694ba0 . . . . . . . . . . . . . . . . [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 (27 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'dcwadmin.imperial.ac.uk' . . . . . . . . . . . . . . . . [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) 00f100770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018e029997b20000040300483046022100fb072eedb8da2344b32e10ee75a2855368de0bab009b83ef12eb9d18a2c49b8802210097906a0da58b42996bfd12e26ac1903d6a08a792a7266dc3f4301c973d6a6433007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018e029997c60000040300473045022100f68fb5f0647090b5de7af8f4667defd545c8f25bffe9ea2bbf21c506c7c5a1fb022029aa04fdf61589459e3bea493e4738604438989a6921987a31913e2e795e8a7a . . . . [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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