library.northumbria.ac.uk
Issued by R3
About this certificate
This digital certificate with serial number 04:d1:f3:9c:81:2a:94:38:02:07:cf:78:c8:45:05:b5:d0:4d was issued on by Let's Encrypt.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
- 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=library.northumbria.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate will expire on
Certificate Details
Serial Number (hex): 04:d1:f3:9c:81:2a:94:38:02:07:cf:78:c8:45:05:b5:d0:4dSerial Number (int): 419891973434607084628119421287392087494733
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: d8:71:4c:08:b4:01:dc:c6:8f:97:b9:9b:5d:04:4c:03:50:b0:05:91
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 1b:8b:c8:28:c2:de:82:55:c4:f3:1a:a3:20:58:0a:3f:a9:16:cb:1d
Fingerprint (sha256): 08:7c:59:7b:5c:4b:3b:5d:6b:87:74:4c:c6:70:15:4a:1e:63:af:a9:66:1d:52:11:6a:ac:40:4d:9e:b4:d2:dd
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate library.northumbria.ac.uk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for library.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
library.northumbria.ac.uk
northumbriauniversity.beta.libguides.com
northumbriauniversity.beta.libguides.com
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Certificate
The complete raw certificate details for library.northumbria.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFKjCCBBKgAwIBAgISBNHznIEqlDgCB894yEUFtdBNMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDA0MjExMjA5NTZaFw0yNDA3MjAxMjA5NTVaMCQxIjAgBgNVBAMT GWxpYnJhcnkubm9ydGh1bWJyaWEuYWMudWswggEiMA0GCSqGSIb3DQEBAQUAA4IB DwAwggEKAoIBAQD5ESwaI3qk6sq+iai360qUlzSGsOna2SXHQV3on2rdK2mY9QKS 5vz0afmN8R7qn2vgBHyPJwiRqZ6DoQxwSXaI2mI3PGSiFhLAswqjepvYEyAIHDGw UEduO1jZzMXT6M5fwMay4i0knYcPwKkeXE42Nw7pytyxqjMU4+byYa8XKadf8VLm iIAb+hj5SQ+BlbFvfX0ZYTWPxelnBqTBNJTz8FDE54InIG6Ey0fVT126xoN4iQ6o ZXeiLrqL8vbz7NuN79IcOJWeI/fv+pmc/iurHiX0T0X58zFBE6TqOFcwV5l96PDL VRrbdpoU1U+6TMfI/IpUal4EJ3lXzuWZbRXtAgMBAAGjggJGMIICQjAOBgNVHQ8B Af8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB /wQCMAAwHQYDVR0OBBYEFNhxTAi0AdzGj5e5m10ETANQsAWRMB8GA1UdIwQYMBaA FBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcw AYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMu aS5sZW5jci5vcmcvME4GA1UdEQRHMEWCGWxpYnJhcnkubm9ydGh1bWJyaWEuYWMu dWuCKG5vcnRodW1icmlhdW5pdmVyc2l0eS5iZXRhLmxpYmd1aWRlcy5jb20wEwYD VR0gBAwwCjAIBgZngQwBAgEwggEFBgorBgEEAdZ5AgQCBIH2BIHzAPEAdwDf4Vbr qgWvtZwPhnGNqMAyTq5W2W6n9aVqAdHBO75SXAAAAY8AxxAbAAAEAwBIMEYCIQDZ PH9OTRjLm8yKdR3aviBrN5wr3URfz/xm8W9VQ+uQ3QIhANRIcPP6Vzzj77fNask7 TKTlLEyarCd+WF6fNTsBa+/5AHYASLDja9qmRzQP5WoC+p0w6xxSActW3SyB2bu/ qznYhHMAAAGPAMcPYwAABAMARzBFAiBoZNIG6riO09qpf2RgcoYVeaU2/Hlnpe6U 1thry6X5JwIhAPnk9b6N+0L8UYtATH5BgFAEuewDLYzzM++F6rHUDuYkMA0GCSqG SIb3DQEBCwUAA4IBAQBpzrCRiXzaRFYazwIR3E0YYn1s/cZ3BYAnx5a0kK+I2P7C kfQS8LZQVYZv8gD4fhZRRzqBkANpB7MT3KCb/GZWEQL2+k2daEKYg7qtAveGf/Al 7DGQVAoMmRrLTnnw84t1p+MKDoABcAolaO/EwJFrLhiiUFfjOYV+jDh1f5j33W0S Txe5ckvENh4ssbsfzFBgqc7YS11qAQOl/eObExcmoS9vjQBw7OaC2O8Q9lbNt1g8 eMAsDc6iQ1sWxzYsCV7roBgQD1i6EfTC8tOhW1UNscdA9NxVyodok/thRprDmMWi YpAcIBfJr6OvVIOjKGqVcTGXRMa3U20dQbuWYmz8 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA+REsGiN6pOrKvomot+tK lJc0hrDp2tklx0Fd6J9q3StpmPUCkub89Gn5jfEe6p9r4AR8jycIkameg6EMcEl2 iNpiNzxkohYSwLMKo3qb2BMgCBwxsFBHbjtY2czF0+jOX8DGsuItJJ2HD8CpHlxO NjcO6crcsaozFOPm8mGvFymnX/FS5oiAG/oY+UkPgZWxb319GWE1j8XpZwakwTSU 8/BQxOeCJyBuhMtH1U9dusaDeIkOqGV3oi66i/L28+zbje/SHDiVniP37/qZnP4r qx4l9E9F+fMxQROk6jhXMFeZfejwy1Ua23aaFNVPukzHyPyKVGpeBCd5V87lmW0V 7QIDAQAB -----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 419891973434607084628119421287392087494733 . . . . . . . . [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 2024-04-21 12:09:56 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-20 12:09:55 +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 'library.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 31441805900386029698337477498494584595885966810690949178215902702872372101140808207352783760968988563813147153013189338981961016555718669724384839834127501717073775338158530637978450659281269882753116265520066657238634198796197098137488148491724563995604072344210033736224305879009424077621650822377668648225091474805763099323124366487763693554935302455841725373935273663617078084890325676060389472755837670117613829645914081224745921452656579610242173191037899295460108820531767945377867140721317793642764987261565114265529485897265763405998977079339488985573918785321879302673548627637192022712180945766949682222573 . . . . . . . . . . . . . . . . . . . . [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) d8714c08b401dcc68f97b99b5d044c0350b00591 . . . . . . . . . . . . . . . . [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 (71 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'library.northumbria.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'northumbriauniversity.beta.libguides.com' . . . . . . . . . . . . . . . . [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) 00f1007700dfe156ebaa05afb59c0f86718da8c0324eae56d96ea7f5a56a01d1c13bbe525c0000018f00c7101b0000040300483046022100d93c7f4e4d18cb9bcc8a751ddabe206b379c2bdd445fcffc66f16f5543eb90dd022100d44870f3fa573ce3efb7cd6ac93b4ca4e52c4c9aac277e585e9f353b016beff900760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f00c70f63000004030047304502206864d206eab88ed3daa97f646072861579a536fc7967a5ee94d6d86bcba5f927022100f9e4f5be8dfb42fc518b404c7e41805004b9ec032d8cf333ef85eab1d40ee624 . . . . [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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