www.19.bbk.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:d2:68:9f:cd:7d:7e:f2:9a:56:0c:90:92:72:9d:20:1c:e6 was issued on by Let's Encrypt.
With 3 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=www.19.bbk.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:d2:68:9f:cd:7d:7e:f2:9a:56:0c:90:92:72:9d:20:1c:e6Serial Number (int): 332935224303276733018548377415564367240422
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: de:03:b1:3b:39:a8:7a:57:15:b6:db:6f:d1:b8:74:e0:d2:aa:4c:9f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 3d:5c:59:f1:4b:f2:98:ba:66:ee:50:ff:e7:b5:f9:9c:17:ef:cf:f0
Fingerprint (sha256): 0a:fd:4e:68:5d:7a:d0:ca:8a:8d:87:73:ce:cc:51:38:0b:10:c9:4e:5c:b6:23:08:a7:0f:f8:77:ce:c5:1d:94
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.19.bbk.ac.uk
3
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.19.bbk.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
19.bbk.ac.uk
ntn.ubiquitypress.com
www.19.bbk.ac.uk
ntn.ubiquitypress.com
www.19.bbk.ac.uk
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Certificate
The complete raw certificate details for www.19.bbk.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGMDCCBRigAwIBAgISA9Jon819fvKaVgyQknKdIBzmMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA2MDgxMDA3MjBaFw0x ODA5MDYxMDA3MjBaMBsxGTAXBgNVBAMTEHd3dy4xOS5iYmsuYWMudWswggEiMA0G CSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDaD/g8K3Sy4RoVIF3bA2+qs8UdTZ0y JHDK/opweSkdlvj7lr9d4b8dvV/Mmag3JwR5rmreR3KISUnXrkq9yGVr9ZGx4cTb MahPkh6Ba3oKqnbc8Bvgj+OPUmVAYVaZt7rPNzbxEOYlYf5HtDirw1bLR6rzYsPo LIPpb7AmDSshUXEL5/77cWktwbN4ErdcbQ1GvQR1aZ6LZm9ZbrfC9mcHuYqjkOJ9 /m3N7WD+ymmElOy07QCb1LL/f+/VQsghJGjFQyoS4pz8BQisRmRKWKQ04t6GOQez jtri9NXCkfrKMNNZHmy/6X4bfA47u3e7QVdw8ZeLkF2MhYOgmjAX+tyFAgMBAAGj ggM9MIIDOTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsG AQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFN4DsTs5qHpXFbbbb9G4dODS qkyfMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEB BGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZy8wQAYDVR0RBDkwN4IMMTkuYmJrLmFjLnVrghVudG4udWJpcXVpdHlwcmVz cy5jb22CEHd3dy4xOS5iYmsuYWMudWswgf4GA1UdIASB9jCB8zAIBgZngQwBAgEw geYGCysGAQQBgt8TAQEBMIHWMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNl bmNyeXB0Lm9yZzCBqwYIKwYBBQUHAgIwgZ4MgZtUaGlzIENlcnRpZmljYXRlIG1h eSBvbmx5IGJlIHJlbGllZCB1cG9uIGJ5IFJlbHlpbmcgUGFydGllcyBhbmQgb25s eSBpbiBhY2NvcmRhbmNlIHdpdGggdGhlIENlcnRpZmljYXRlIFBvbGljeSBmb3Vu ZCBhdCBodHRwczovL2xldHNlbmNyeXB0Lm9yZy9yZXBvc2l0b3J5LzCCAQQGCisG AQQB1nkCBAIEgfUEgfIA8AB1ANt0r+7LKeyx/so+cW0s5bmquzb3hHGDx12dTze2 H79kAAABY98UTvMAAAQDAEYwRAIgUbpU7RRx331m8LNtf8KuuWunuiQBRquA28Yf F50eNkYCIFjaL4GnlKBvv2Epcts/ONWm7ScAlnnjyZc/QqRps0jbAHcAKTxRllTI OWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFj3xRPAwAABAMASDBGAiEAm+vX PAPtwnQyTQd5+RqZ1gvqjDmJfBJmNl2AGwHoLjoCIQCmG9k0/yPuIxPzTqIfc8of 9mQt76H+BpPH2sW4QwSCGDANBgkqhkiG9w0BAQsFAAOCAQEAPdSdjsjz825hw+Ek I/giXjotnLfLVb2u7FcMkIOwpO6khMZxNZt4dPO4G1bfqh2fKAm1ugcARGDrTqfg 7UEWVW3E7EKN9HN073dzpkAjRQONGDZzCkID6rkpyFOAYPdL3NEOI39dQ6wZcltJ lQ+1yUVbzeArsV7CW92XHyyAb4BgC0m2lCSEuNQE5sj+xZrqpBnpyb0hR/R638Du xXSCUjXgdOlXhk4DOl/ZOYGal3MHfVKBitEX+OLEvVj8f3t+ixhFVLa30uquTd1L YYBvwrMIPlRdy/+I0EuZ3l/gmw/WjFO1jmpGirIYETTABWlvTYseQAxzqXzL02uK nsv+2A== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2g/4PCt0suEaFSBd2wNv qrPFHU2dMiRwyv6KcHkpHZb4+5a/XeG/Hb1fzJmoNycEea5q3kdyiElJ165Kvchl a/WRseHE2zGoT5IegWt6Cqp23PAb4I/jj1JlQGFWmbe6zzc28RDmJWH+R7Q4q8NW y0eq82LD6CyD6W+wJg0rIVFxC+f++3FpLcGzeBK3XG0NRr0EdWmei2ZvWW63wvZn B7mKo5Diff5tze1g/spphJTstO0Am9Sy/3/v1ULIISRoxUMqEuKc/AUIrEZkSlik NOLehjkHs47a4vTVwpH6yjDTWR5sv+l+G3wOO7t3u0FXcPGXi5BdjIWDoJowF/rc hQIDAQAB -----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 332935224303276733018548377415564367240422 . . . . . . . . [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 2018-06-08 10:07:20 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-09-06 10:07:20 +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 'www.19.bbk.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 27527825419452441925033513264960014322891250257373544319024495360427412682069791131330158342710324868930522596207747754144167721620530866599007816242785961599225279100010129197251582407470882382650522587397522914089383259981194134717617041255971546567084543662614268070166469430274061292620229206914476691280153745007610600998709120356559838712482214976125421055050989515264506786224758382327453831803490522483099199169393569758156187436115377996368156630227285868849661127913681254854283823765909625463106421323831798543551228877453683480495834506370127206028403160582046240426299990853636964580962735786321367456901 . . . . . . . . . . . . . . . . . . . . [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) de03b13b39a87a5715b6db6fd1b874e0d2aa4c9f . . . . . . . . . . . . . . . . [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 (57 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '19.bbk.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ntn.ubiquitypress.com' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.19.bbk.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . . . . . . . . . . . . . [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) 00f0007500db74afeecb29ecb1feca3e716d2ce5b9aabb36f7847183c75d9d4f37b61fbf6400000163df144ef30000040300463044022051ba54ed1471df7d66f0b36d7fc2aeb96ba7ba240146ab80dbc61f179d1e3646022058da2f81a794a06fbf612972db3f38d5a6ed27009679e3c9973f42a469b348db007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000163df144f0300000403004830460221009bebd73c03edc274324d0779f91a99d60bea8c39897c1266365d801b01e82e3a022100a61bd934ff23ee2313f34ea21f73ca1ff6642defa1fe0693c7dac5b843048218 . . . . [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) 003dd49d8ec8f3f36e61c3e12423f8225e3a2d9cb7cb55bdaeec570c9083b0a4eea484c671359b7874f3b81b56dfaa1d9f2809b5ba07004460eb4ea7e0ed4116556dc4ec428df47374ef7773a6402345038d1836730a4203eab929c8538060f74bdcd10e237f5d43ac19725b49950fb5c9455bcde02bb15ec25bdd971f2c806f80600b49b6942484b8d404e6c8fec59aeaa419e9c9bd2147f47adfc0eec574825235e074e957864e033a5fd939819a9773077d52818ad117f8e2c4bd58fc7f7b7e8b184554b6b7d2eaae4ddd4b61806fc2b3083e545dcbff88d04b99de5fe09b0fd68c53b58e6a468ab2181134c005696f4d8b1e400c73a97ccbd36b8a9ecbfed8