libraryanswers.northumbria.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:33:2a:a0:d5:4e:9d:8d:c0:16:f1:95:75:79:66:5e:94:b6 was issued on by Let's Encrypt.
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=libraryanswers.northumbria.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:33:2a:a0:d5:4e:9d:8d:c0:16:f1:95:75:79:66:5e:94:b6Serial Number (int): 365860207109710983028328764266352083899574
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: b2:db:6c:f6:62:e6:6a:1e:e0:db:46:33:b0:ee:78:fd:92:64:60:1b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 40:ad:5b:16:ac:b9:d8:e0:b0:25:3f:f0:d0:b3:29:02:74:ed:a6:2c
Fingerprint (sha256): 43:6b:33:23:49:f5:5b:61:7a:f4:6d:b8:98:93:d3:a0:bc:d7:5b:03:a5:01:f8:00:37:45:fd:66:c1:3b:67:0d
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate libraryanswers.northumbria.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for libraryanswers.northumbria.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
libraryanswers.northumbria.ac.uk
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Certificate
The complete raw certificate details for libraryanswers.northumbria.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFeDCCBGCgAwIBAgISBDMqoNVOnY3AFvGVdXlmXpS2MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA5MDIxOTAwMDZaFw0x OTEyMDExOTAwMDZaMCsxKTAnBgNVBAMTIGxpYnJhcnlhbnN3ZXJzLm5vcnRodW1i cmlhLmFjLnVrMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyAfHapiC QX+rDagAraHs8Vw5R3FRKaix2f0mbjHdkWHgN4oUZ0q+X9Ia9F6nGFzlPDdHboSA rLRuBAqesKAPDV2B3Bg+idWRUNIOQUPkC9eL/nJeU63aDaN1EkqnlxtmmMyNBGqm i9xqGl9kumU6wArFLq3RJSVSMFnzmK7s7nQYuXRjtE3DAJtAx0t4c+l8fwmKu7sF kKrNP864hrmAjBm/aR6/bvOdz7xMJy3eQ1JyJPkmYUATjAwe5lwK01pSvgS5WN6T r6VIvnLEgOkIHhUxhVF3JlbAiIMJj3yrCboJqfK7TWbXrXsn6ROlLC6Qje0fPaxp f8/lfFhe8RrWXQIDAQABo4ICdTCCAnEwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSy 22z2YuZqHuDbRjOw7nj9kmRgGzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMCsGA1UdEQQkMCKCIGxpYnJhcnlhbnN3ZXJz Lm5vcnRodW1icmlhLmFjLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHcA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFs85ApWAAABAMASDBGAiEA6rZPGwjold76upQsMHKIRjAb F6mda3bksq1TXzAnVxYCIQDGBGwq8xn6gB6WuuRmfeV340x2UHVOZC7yWeyeAIAR cwB1AGPy283oO8wszwtyhCdXazOkjWF3j711pjixx2hUS9iNAAABbPOQKV0AAAQD AEYwRAIgO1gdm6hTMMmIoIVkocFpFn/DZlkyVZKtJsgyydhq2KECICsM5o72dwe6 IJocMv+aUKHRlxJqF94Z5ptpT8W4Ep6iMA0GCSqGSIb3DQEBCwUAA4IBAQB6XupT nqFqDxUPbYUVMPRC3PN7aPfoVERg1kZPN8zKat5/5h1XcH9n+1skC1+KJ/WKvGJk HS6xydpI82WK0uxzAfakv9L0bI4m0K/a7N0xK7KHdaAaZqvpBZCuIcV88h1ldGl2 nXi8ihs6PHZBAUq16oo/1VCjDCtzcBOAwhGIzSCo0RaaMv6GK/d1YQSyRc8rhTXG HpQCvSXAENE9eFSYv1Ko0q6uFuK1DOMx2XqyZaO/AWoCTm4plbLe5jF8IL5taQEI NNtrxxJDXLVdDpNF6z8CvwuuXA95z6pqB4GY3Ep7grST6IHljMk0itIm24q1LYn9 HRZtu6hJ6jIRIFN/ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyAfHapiCQX+rDagAraHs 8Vw5R3FRKaix2f0mbjHdkWHgN4oUZ0q+X9Ia9F6nGFzlPDdHboSArLRuBAqesKAP DV2B3Bg+idWRUNIOQUPkC9eL/nJeU63aDaN1EkqnlxtmmMyNBGqmi9xqGl9kumU6 wArFLq3RJSVSMFnzmK7s7nQYuXRjtE3DAJtAx0t4c+l8fwmKu7sFkKrNP864hrmA jBm/aR6/bvOdz7xMJy3eQ1JyJPkmYUATjAwe5lwK01pSvgS5WN6Tr6VIvnLEgOkI HhUxhVF3JlbAiIMJj3yrCboJqfK7TWbXrXsn6ROlLC6Qje0fPaxpf8/lfFhe8RrW XQIDAQAB -----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 365860207109710983028328764266352083899574 . . . . . . . . [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 2019-09-02 19:00:06 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-01 19:00:06 +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 'libraryanswers.northumbria.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 25251496946420719599589454933570114144173333489125149470982828985016556560649217242032480512128674211389910573646306993449827918282555855215283429117230825897115335546932754726657427768651005872163328975686120236056623991965331488997575104045313409809292515316289201532955803507934266100457437828908834843059049445292411631951723294104045721347838142321705636605531118012311226712088393281627907113540757097579436389416266458706689734712171505566395284521805472854787357293359702530735274558461624080344427598928170140739610418926349935474780585942072009256470163663329345033464575309605128811902237239925541585999453 . . . . . . . . . . . . . . . . . . . . [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) b2db6cf662e66a1ee0db4633b0ee78fd9264601b . . . . . . . . . . . . . . . . [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 (36 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'libraryanswers.northumbria.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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016cf39029580000040300483046022100eab64f1b08e895defaba942c30728846301b17a99d6b76e4b2ad535f30275716022100c6046c2af319fa801e96bae4667de577e34c7650754e642ef259ec9e0080117300750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016cf390295d000004030046304402203b581d9ba85330c988a08564a1c169167fc36659325592ad26c832c9d86ad8a102202b0ce68ef67707ba209a1c32ff9a50a1d197126a17de19e69b694fc5b8129ea2 . . . . [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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