ucu.imperial.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:07:08:81:71:fc:57:cf:73:70:01:44:19:b8:59:be:68:9b was issued on by Let's Encrypt.
With 4 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:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=ucu.imperial.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:07:08:81:71:fc:57:cf:73:70:01:44:19:b8:59:be:68:9bSerial Number (int): 263730140305893297658733391971396460898459
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: df:b9:2a:1d:c4:cb:70:81:c8:a6:ba:83:64:15:55:c6:df:f7:74:57
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 17:66:1b:07:f8:a7:7f:9c:0a:1a:5a:3e:d8:3b:7c:46:02:ce:ee:cf
Fingerprint (sha256): 86:f4:aa:55:7e:c5:68:7b:70:7d:19:98:e7:3f:14:f3:22:9e:f5:4d:b7:6d:6c:1c:63:03:62:26:0b:8a:66:45
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate ucu.imperial.ac.uk
4
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for ucu.imperial.ac.uk
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
ucu.imperial.ac.uk
ucuimperial.web.ucu.org.uk
www.ucu.imperial.ac.uk
www.ucuimperial.web.ucu.org.uk
ucuimperial.web.ucu.org.uk
www.ucu.imperial.ac.uk
www.ucuimperial.web.ucu.org.uk
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Certificate
The complete raw certificate details for ucu.imperial.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFsTCCBJmgAwIBAgISAwcIgXH8V89zcAFEGbhZvmibMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MDYwNzEzMjJaFw0x OTExMDQwNzEzMjJaMB0xGzAZBgNVBAMTEnVjdS5pbXBlcmlhbC5hYy51azCCASIw DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALxS5m23fEe+EL7DgV1s7XRbfS/b TxjI7C20P8wOgkox8WI4qXsU0++EdnOjPUWrZSWqtv1tF40FIKWvnQIbfiyWe3u0 BEQnT79fQjMlNS9bHD9/CcNvba3PkMCLQZ0irA8gb1HFLdfQKIL/2GgARZc5u5Cr oGInrO3S+vx87n431vsTMazIQ8aY3syP2sKt8cTGEtEHpitrzrFZ30hk2NL+pbGv d0Qk4d6KMDD5MzMT7Af7eQM1JXWP0bX+mcZvnGNa7PoyA1bOpif+OxuA9Cv44Gz6 91Le8BFEGtULV+AV39TN5Ll78OdKARLvBYqedAGStSZHhcTEmWDZyrs9AWMCAwEA AaOCArwwggK4MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYI KwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU37kqHcTLcIHIprqDZBVV xt/3dFcwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUH AQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5 cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5 cHQub3JnLzBxBgNVHREEajBoghJ1Y3UuaW1wZXJpYWwuYWMudWuCGnVjdWltcGVy aWFsLndlYi51Y3Uub3JnLnVrghZ3d3cudWN1LmltcGVyaWFsLmFjLnVrgh53d3cu dWN1aW1wZXJpYWwud2ViLnVjdS5vcmcudWswTAYDVR0gBEUwQzAIBgZngQwBAgEw NwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5j cnlwdC5vcmcwggEFBgorBgEEAdZ5AgQCBIH2BIHzAPEAdgBvU3asMfAxGdiZAKRR Ff93FRwR2QLBACkGjbIImjfZEwAAAWxl/Wt8AAAEAwBHMEUCIBLyi32epttM1/rz Mna2jpk9r8MTtL/0CUSQ4yiEP/t0AiEA7w7Te6A5Pcj33PADgCcD7cj3araxPoTJ nx30wIpl6icAdwBj8tvN6DvMLM8LcoQnV2szpI1hd4+9daY4scdoVEvYjQAAAWxl /W1rAAAEAwBIMEYCIQC8mdABt4+XP3d9BBr1lKhrOgrrvat7OCLX7FrAOP3oPgIh AJOsa2DdrHz9RzWER1zaWzPjWDIbzf9kudyKQwMj5dVJMA0GCSqGSIb3DQEBCwUA A4IBAQA56pvjJMfIzbB+UwNp0KX+VooLFJXZuL89es1phC13phPET6FzLwAsdLqq 7is7gBXFERn7ca5L0vyE4HDtuPWBpt/4hwK8EzhQ7eqDftH341uIXP6ffm470OHJ zNlhQUi/pPhQS7yA9ruV4v0IxGezDbWl+ZB6xYloGLdyJkAQ1onhIVjBW0ALBot6 q3r9Cy2B+ZUXq9bXz+VvlOZfb6SbZVFwX5TaRsH/H7GkxtCNaqWB5lDiIAV3eyvo MqoKpUkjGv3mJcAC8qvqqPPFycztnBV0krF5NPDsOiZHwyd2ljcdmAElQH/kMKpN 6GEoL5BPZpczpm+ug+OsNDAzDwq8 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvFLmbbd8R74QvsOBXWzt dFt9L9tPGMjsLbQ/zA6CSjHxYjipexTT74R2c6M9RatlJaq2/W0XjQUgpa+dAht+ LJZ7e7QERCdPv19CMyU1L1scP38Jw29trc+QwItBnSKsDyBvUcUt19Aogv/YaABF lzm7kKugYies7dL6/HzufjfW+xMxrMhDxpjezI/awq3xxMYS0QemK2vOsVnfSGTY 0v6lsa93RCTh3oowMPkzMxPsB/t5AzUldY/Rtf6Zxm+cY1rs+jIDVs6mJ/47G4D0 K/jgbPr3Ut7wEUQa1QtX4BXf1M3kuXvw50oBEu8Fip50AZK1JkeFxMSZYNnKuz0B YwIDAQAB -----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 263730140305893297658733391971396460898459 . . . . . . . . [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 2019-08-06 07:13:22 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-04 07:13:22 +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 'ucu.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 (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 23773680902273359158284163500857803888371036279770090547674565052555966385153896345624583988752996772055507301298054585745075169633412405326558535048515288288163997321869584620411707594056687116197135807607498128039064736790452473098233463856296192972760453365831985612458734415665196460576754064857283489853593402302426922393702064931002210017450522152553265549193768166993028476479842236303370472027794180310024334336583236028769264974884665271147501228840746232889134038471437770138086827840323006255285281068275396342793825403442194626260927190413771603244969089467221628155030042101964861603001564200116730790243 . . . . . . . . . . . . . . . . . . . . [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) dfb92a1dc4cb7081c8a6ba83641555c6dff77457 . . . . . . . . . . . . . . . . [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 (106 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ucu.imperial.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ucuimperial.web.ucu.org.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ucu.imperial.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ucuimperial.web.ucu.org.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 (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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f10076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016c65fd6b7c0000040300473045022012f28b7d9ea6db4cd7faf33276b68e993dafc313b4bff4094490e328843ffb74022100ef0ed37ba0393dc8f7dcf003802703edc8f76ab6b13e84c99f1df4c08a65ea2700770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c65fd6d6b0000040300483046022100bc99d001b78f973f777d041af594a86b3a0aebbdab7b3822d7ec5ac038fde83e02210093ac6b60ddac7cfd473584475cda5b33e358321bcdff64b9dc8a430323e5d549 . . . . [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) 0039ea9be324c7c8cdb07e530369d0a5fe568a0b1495d9b8bf3d7acd69842d77a613c44fa1732f002c74baaaee2b3b8015c51119fb71ae4bd2fc84e070edb8f581a6dff88702bc133850edea837ed1f7e35b885cfe9f7e6e3bd0e1c9ccd9614148bfa4f8504bbc80f6bb95e2fd08c467b30db5a5f9907ac5896818b772264010d689e12158c15b400b068b7aab7afd0b2d81f99517abd6d7cfe56f94e65f6fa49b6551705f94da46c1ff1fb1a4c6d08d6aa581e650e22005777b2be832aa0aa549231afde625c002f2abeaa8f3c5c9cced9c157492b17934f0ec3a2647c3277696371d980125407fe430aa4de861282f904f669733a66fae83e3ac3430330f0abc