www1.imperial.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:70:e5:a0:73:0b:cf:33:12:20:96:74:1c:d5:05:29:2c:40 was issued on by Let's Encrypt.
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- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=www1.imperial.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:70:e5:a0:73:0b:cf:33:12:20:96:74:1c:d5:05:29:2c:40Serial Number (int): 299753709202370698500537750302866268564544
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 31:41:e6:41:90:38:47:d4:f8:eb:0f:76:c7:fb:dc:6f:f0:86:f4:be
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): a4:b6:6a:51:a9:b7:9c:7b:d5:4a:47:ef:73:9d:07:1f:9a:88:51:c8
Fingerprint (sha256): 16:f8:32:5c:bc:ae:82:af:d6:41:87:a4:69:66:b3:51:a2:3a:a4:7f:56:c1:33:5d:d4:99:3a:e5:74:8a:e1:d2
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www1.imperial.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www1.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
www1.imperial.ac.uk
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Certificate
The complete raw certificate details for www1.imperial.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFXTCCBEWgAwIBAgISA3DloHMLzzMSIJZ0HNUFKSxAMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA0MTAyMzI0MzBaFw0x OTA3MDkyMzI0MzBaMB4xHDAaBgNVBAMTE3d3dzEuaW1wZXJpYWwuYWMudWswggEi MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCqOgK8h0zndd/VjfWZe7D82TJP LJpgMyku0pmgjCzXEWppC9D2rinmIqyV6u1GWiJjXN+GR6nLUjnnzyCN/G38Fzcr JHoTOyXnaD0wow0qoyH35BN9+jXiKHzk8s42DEpcErk0VRdXXLMFOd19xDK0cddK 3G6fpTGS8mQwR3+b2Wx2oFJtgcd3fJQhvSICPCR4f/UBUuFrc+TG9lJOiGgZwe81 XJ4lS1+sRWV63KqIMl0aslwgNplsoSKHHV3z5eQs7ZApOxOMYge45IlmEsAKUO/8 GgV3QgWGwENff6puOGWTPTSGztkIk0T8xPvzUR0ZvujwZUabEES/chUCEjYbAgMB AAGjggJnMIICYzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG CCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFDFB5kGQOEfU+OsPdsf7 3G/whvS+MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUF BwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNy eXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNy eXB0Lm9yZy8wHgYDVR0RBBcwFYITd3d3MS5pbXBlcmlhbC5hYy51azBMBgNVHSAE RTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRw Oi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQEgfEA7wB1 AOJpS64m6OlACeiGG7Y7g9Q+5/50iPukjyiTAZ3d8dv+AAABagnIHCsAAAQDAEYw RAIgY1bPkKzKXm5zu2VvkNoKAz2+RCefXTAUfSk1y4Ab41QCID1bhzBKGsHfjXWP GPATPZLsGiUm2FgYv8qhv7lF+wSrAHYAY/Lbzeg7zCzPC3KEJ1drM6SNYXePvXWm OLHHaFRL2I0AAAFqCcgeJQAABAMARzBFAiAFquQkt2fQawOXUJtLg1hivH3Wg6yf i7qv9yuL92RUNQIhAMJ5llTlyZ3DGtrax78JTKSZGeq+cTBUc16MVq0s/p7OMA0G CSqGSIb3DQEBCwUAA4IBAQBaVVkWxsS18YV9UV+9fNr9dGBuV6kc8nD+Eeybm51u m8plA9JrF0qqAmZXWI2WELnsYv6EoftaUrSGR9e+TqIUiPVxNKYKwCISdio9OVh9 Krx9K65ft8G9ln48yEnCUvO7q+39vefFZKy8d3EpoCUAKSBdUcOrZSQI25MvTVb9 oF6yJfJwEtbWP3A5i6CzZcZ96Se20jR16X8Y2oHXoOblhYSDOjRwa9Zc3LGF/oSk v7frnmJcGAuZ8iP2uOP7uqQZNnQ2AVbkO4DLrcGesgmBWMWJDNZfBUFEenV8ZgCw IK7aG5IlNJeWXKh7pEqHVoOi0kegPMrIEso8fKGB/d3v -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqjoCvIdM53Xf1Y31mXuw /NkyTyyaYDMpLtKZoIws1xFqaQvQ9q4p5iKslertRloiY1zfhkepy1I5588gjfxt /Bc3KyR6Ezsl52g9MKMNKqMh9+QTffo14ih85PLONgxKXBK5NFUXV1yzBTndfcQy tHHXStxun6UxkvJkMEd/m9lsdqBSbYHHd3yUIb0iAjwkeH/1AVLha3PkxvZSToho GcHvNVyeJUtfrEVletyqiDJdGrJcIDaZbKEihx1d8+XkLO2QKTsTjGIHuOSJZhLA ClDv/BoFd0IFhsBDX3+qbjhlkz00hs7ZCJNE/MT781EdGb7o8GVGmxBEv3IVAhI2 GwIDAQAB -----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 299753709202370698500537750302866268564544 . . . . . . . . [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 2019-04-10 23:24:30 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-09 23:24:30 +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 'www1.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 21489117981248134910299459626349514011928660225456493491866769582274104074585591238572360229089878880395805498896709725180823837757157759196060285438678363457472953483522373596105496603542217539204616021513163669053426738953725731244925938728850350179313093733342763940070391155585104732702850487310744204035484269484658140446450991451903924571170934352072126692831607594548171877150182114103966641457097223987954540718944349745476639997393787961047249456459232544596324664542205277831025723980589002140373089215855490348276552911822661503151838678860011984328720029389862695369625831451080502471736536244809723164187 . . . . . . . . . . . . . . . . . . . . [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) 3141e641903847d4f8eb0f76c7fbdc6ff086f4be . . . . . . . . . . . . . . . . [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 (23 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www1.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 (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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016a09c81c2b000004030046304402206356cf90acca5e6e73bb656f90da0a033dbe44279f5d30147d2935cb801be35402203d5b87304a1ac1df8d758f18f0133d92ec1a2526d85818bfcaa1bfb945fb04ab00760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016a09c81e250000040300473045022005aae424b767d06b0397509b4b835862bc7dd683ac9f8bbaaff72b8bf7645435022100c2799654e5c99dc31adadac7bf094ca49919eabe713054735e8c56ad2cfe9ece . . . . [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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