richmond.ac.uk
Issued by E1
About this certificate
This digital certificate with serial number 04:dd:8b:ca:f1:cf:e9:db:4a:b9:08:e4:81:c8:bd:89:bb:18 was issued on by Let's Encrypt.
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=richmond.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate will expire on
Certificate Details
Serial Number (hex): 04:dd:8b:ca:f1:cf:e9:db:4a:b9:08:e4:81:c8:bd:89:bb:18Serial Number (int): 423837363256481233588832545817878365584152
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: de:36:f4:cd:07:17:3b:b1:08:34:21:d7:e4:0a:db:7f:3e:d0:ca:13
AuthorityKeyId: 5a:f3:ed:2b:fc:36:c2:37:79:b9:52:30:ea:54:6f:cf:55:cb:2e:ac
Fingerprint (sha1): 23:38:d5:2d:7e:0b:d9:1f:90:91:8e:25:0f:a1:0a:94:22:60:80:92
Fingerprint (sha256): 2e:2a:84:0c:28:75:74:11:e2:4a:97:1e:10:34:0f:19:89:a2:d1:b3:c5:dc:68:f1:7e:65:20:51:8a:b9:d6:80
Issuing Certificate URL: http://e1.i.lencr.org/
Revocation information
OCSP Server: http://e1.o.lencr.orgCheck the revocation status for certificate richmond.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for richmond.ac.uk
Public Key Algorithm
ECDSA
Key Size
256
Signature Algorithm
ECDSA with SHA384
Key Usage
Digital Signature
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
richmond.ac.uk
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(limited to 100 certificates)
blackboard.richmond.ac.uk
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alumni.richmond.ac.uk
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selfservice.richmond.ac.uk
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selfservice.richmond.ac.uk
webmail.richmond.ac.uk
webmail.richmond.ac.uk
webmail.richmond.ac.uk
library.richmond.ac.uk
careers.richmond.ac.uk
eu-central-1-san1.blackboard.com
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eu-central-1-san1.blackboard.com
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sslvpn.richmond.ac.uk
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store.richmond.ac.uk
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viewss.richmond.ac.uk
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eu-central-1-san1.blackboard.com
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viewss.richmond.ac.uk
alumni.richmond.ac.uk
epayments.richmond.ac.uk
selfservice.richmond.ac.uk
*.richmond.ac.uk
selfservice.richmond.ac.uk
webmail.richmond.ac.uk
webmail.richmond.ac.uk
webmail.richmond.ac.uk
library.richmond.ac.uk
careers.richmond.ac.uk
eu-central-1-san1.blackboard.com
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careers.richmond.ac.uk
store.richmond.ac.uk
richmond.ac.uk
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sslvpn.richmond.ac.uk
selfservice.richmond.ac.uk
blackboard.richmond.ac.uk
webmail.richmond.ac.uk
www.richmond.ac.uk
store.richmond.ac.uk
selfservice.richmond.ac.uk
careers.richmond.ac.uk
*.richmond.ac.uk
careers.richmond.ac.uk
www.richmond.ac.uk
*.richmond.ac.uk
*.richmond.ac.uk
eu-central-1-san1.blackboard.com
eu-central-1-san1.blackboard.com
RUGUEST.richmond.ac.uk
selfservice.richmond.ac.uk
eu-central-1-san1.blackboard.com
www.richmond.ac.uk
*.richmond.ac.uk
selfservice.richmond.ac.uk
webmail.richmond.ac.uk
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viewss.richmond.ac.uk
www.richmond.ac.uk
www.richmond.ac.uk
eu-central-1-san1.blackboard.com
www.richmond.ac.uk
*.richmond.ac.uk
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selfservice.richmond.ac.uk
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Certificate
The complete raw certificate details for richmond.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIDfTCCAwKgAwIBAgISBN2LyvHP6dtKuQjkgci9ibsYMAoGCCqGSM49BAMDMDIx CzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQDEwJF MTAeFw0yNDAzMjcxMDUxMzZaFw0yNDA2MjUxMDUxMzVaMBkxFzAVBgNVBAMTDnJp Y2htb25kLmFjLnVrMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEDBzrjZsrFysd rxioN/dSHfG8O5jzFc+Xgl7lh/KlTszzhTwAqeO57yLhUJKJutsGq4Mi2h9M/DmV +uGyfyb/1KOCAg8wggILMA4GA1UdDwEB/wQEAwIHgDAdBgNVHSUEFjAUBggrBgEF BQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU3jb0zQcXO7EI NCHX5Arbfz7QyhMwHwYDVR0jBBgwFoAUWvPtK/w2wjd5uVIw6lRvz1XLLqwwVQYI KwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vZTEuby5sZW5jci5vcmcw IgYIKwYBBQUHMAKGFmh0dHA6Ly9lMS5pLmxlbmNyLm9yZy8wGQYDVR0RBBIwEIIO cmljaG1vbmQuYWMudWswEwYDVR0gBAwwCjAIBgZngQwBAgEwggEDBgorBgEEAdZ5 AgQCBIH0BIHxAO8AdQA7U3d1Pi25gE6LMFsG/kA7Z9hPw/THvQANLXJv4frUFwAA AY5/wFqVAAAEAwBGMEQCIBZc+sJBWgEyg5K77y8wL/MT/8ipIqmyeSmPKAdzjgJy AiB9m3mnspTbgW62oUY1aX3UMfOr64XX+hEDH0NCn8Rn7QB2AHb/iD8KtvuVUcJh zPWHujS0pM27KdxoQgqf5mdMWjp0AAABjn/AWroAAAQDAEcwRQIhAKvnY7IDBjl6 i7O5GfimROZLcARoQUp/zk3HYX7RlNVgAiAceDVQGVPYCqpTAPbug8RZVNzSKnSV KHV344B532C2OzAKBggqhkjOPQQDAwNpADBmAjEAsFG4TVC2vKUfnpsk08WH/FsG 6CQzsF6lmCSNU9gEZDSOANLRSLV4EwFreZqRE04ZAjEArnFUPE+qSS/IRVsWPaWx w17wrKspHcssub1wsXEya3pjFE+3AKQg7iBtRpMCPDZI -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEDBzrjZsrFysdrxioN/dSHfG8O5jz Fc+Xgl7lh/KlTszzhTwAqeO57yLhUJKJutsGq4Mi2h9M/DmV+uGyfyb/1A== -----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 423837363256481233588832545817878365584152 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.4.3.3 (ecdsaWithSHA384) . . . . . . . . [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 'E1' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-27 10:51:36 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-25 10:51:35 +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 'richmond.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 1.2.840.10045.2.1 (ecPublicKey) . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1) . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits) 00040c1ceb8d9b2b172b1daf18a837f7521df1bc3b98f315cf97825ee587f2a54eccf3853c00a9e3b9ef22e1509289badb06ab8322da1f4cfc3995fae1b27f26ffd4 . . . . . . . . [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 (1 bits) 0780 . . . . . . . . . . . . . . . . [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) de36f4cd07173bb1083421d7e40adb7f3ed0ca13 . . . . . . . . . . . . . . . . [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 5af3ed2bfc36c23779b95230ea546fcf55cb2eac . . . . . . . . . . . . . . . . [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://e1.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://e1.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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'richmond.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 (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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018e7fc05a9500000403004630440220165cfac2415a01328392bbef2f302ff313ffc8a922a9b279298f2807738e027202207d9b79a7b294db816eb6a14635697dd431f3abeb85d7fa11031f43429fc467ed00760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018e7fc05aba0000040300473045022100abe763b20306397a8bb3b919f8a644e64b700468414a7fce4dc7617ed194d56002201c7835501953d80aaa5300f6ee83c45954dcd22a7495287577e38079df60b63b . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.4.3.3 (ecdsaWithSHA384) . . . . [c:0|t:3|false] BIT STRING (832 bits) . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:2|false] INTEGER 27138011480142860294426925279165909951378499818617046738753219499285138921574811195916424295284472460012211053743641 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 26849187557317849538207104492103674224624475007518566980125716314690224725196592187374750509806630415893614043084360