iccs.cam.ac.uk
Issued by R10
About this certificate
This digital certificate with serial number 04:d5:61:66:2a:1f:18:8e:bf:17:99:34:78:97:ba:3e:98:e0 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=iccs.cam.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate will expire on
Certificate Details
Serial Number (hex): 04:d5:61:66:2a:1f:18:8e:bf:17:99:34:78:97:ba:3e:98:e0Serial Number (int): 421058753465396463297705931541723878430944
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 8e:19:1f:07:d9:88:0a:e1:c3:b2:b1:50:e6:0f:22:91:f6:32:2d:c2
AuthorityKeyId: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8
Fingerprint (sha1): c3:ed:2c:51:b2:81:a9:0f:b1:d4:36:bf:03:3e:27:62:12:58:69:69
Fingerprint (sha256): 00:1f:60:d1:b3:6a:3a:17:e4:15:34:4d:5c:84:a0:cc:2c:85:ae:ad:b1:fa:70:0a:99:fa:69:f0:d0:64:b4:8c
Issuing Certificate URL: http://r10.i.lencr.org/
Revocation information
OCSP Server: http://r10.o.lencr.orgCheck the revocation status for certificate iccs.cam.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for iccs.cam.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
iccs.cam.ac.uk
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Certificate
The complete raw certificate details for iccs.cam.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIE7TCCA9WgAwIBAgISBNVhZiofGI6/F5k0eJe6PpjgMA0GCSqGSIb3DQEBCwUA MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD EwNSMTAwHhcNMjQwNjI3MDYwNjU0WhcNMjQwOTI1MDYwNjUzWjAZMRcwFQYDVQQD Ew5pY2NzLmNhbS5hYy51azCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB ALpAvC7tTwboD1Qc1m1gUZIUruQjodYuh5oYcZphPGnuVCBqvAgkoj/ZjUGUcwet bmyaB12ppK35PcPYXPhSmZBKtSfPhbTRkol7YmHKndgbcE3fiMKslCHxBNV1D+hu 4wGpxB+j/Rfi0pX0fzgf1zQ9oZIFtr2zv/fKdlq7cFuK3zU2/MGJk8RimpYGgoRc tREADDh0aeQbJUihXjK8AwbfRbfTXtTkXinL3UOgLSjmXWVxdWouUlih1sVLWPzX H/FFxREi2BLqDwcN+1IeVUebTFWPPkE0njo933AgeFR/rGicaLMFTkA0MQihjI42 ZwtHUYSCo7ZG8GI+1eE/zUcCAwEAAaOCAhMwggIPMA4GA1UdDwEB/wQEAwIFoDAd BgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNV HQ4EFgQUjhkfB9mICuHDsrFQ5g8ikfYyLcIwHwYDVR0jBBgwFoAUu7zDR6XkvKnG w6RyDBCNojXhyOgwVwYIKwYBBQUHAQEESzBJMCIGCCsGAQUFBzABhhZodHRwOi8v cjEwLm8ubGVuY3Iub3JnMCMGCCsGAQUFBzAChhdodHRwOi8vcjEwLmkubGVuY3Iu b3JnLzAZBgNVHREEEjAQgg5pY2NzLmNhbS5hYy51azATBgNVHSAEDDAKMAgGBmeB DAECATCCAQUGCisGAQQB1nkCBAIEgfYEgfMA8QB3AEiw42vapkc0D+VqAvqdMOsc UgHLVt0sgdm7v6s52IRzAAABkFiExoAAAAQDAEgwRgIhALegRkAzQ5sbr/RqDYIN wTm3hpFxV4hBXxFXEPubIMY4AiEAwP6Af7WQ9I9pk6vl3twL5drChq3nV4chJJqE bnWdvXwAdgB2/4g/Crb7lVHCYcz1h7o0tKTNuyncaEIKn+ZnTFo6dAAAAZBYhMa9 AAAEAwBHMEUCIQCc5duWf6nAB7cvjKjjsBEXdO/KGIEiBpmgPGYpT7VToAIgWFMY t1ztz2i8Jpx92hN713MWDxkxOBM8hKBdlGwvlmowDQYJKoZIhvcNAQELBQADggEB AGHKkYR5KcIC5n18JPLq7UQUfr6YQtQNvcsaD5Vp2opdSudwKK4OnNJzyG27F2xd oFyAQB3C5Vp62OtBD0ZMmHXe36P+waHfpwYx9lQMfLl+XnSuRu3vBkqTO3eUV78p Yn+qKe6vLYCFRoBlAEduWexI5ZBdMihYzfKiptRgvkb1+KYQMRAbEzCj5oJkv023 y+LGdUpOEcf+fsNN4k6uYKDQ1RDMWAXd7fDPvEA0Vy950TT6Mlc0SmNUR0kcEUGk YlcI4gW6zQsM8I/46+oqm23deQoi5gyteRBng+F6qmYFzhWXSdVoIgln6hl7nGGe PoBQKWQOT8JIzE3Vm400DwQ= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAukC8Lu1PBugPVBzWbWBR khSu5COh1i6HmhhxmmE8ae5UIGq8CCSiP9mNQZRzB61ubJoHXamkrfk9w9hc+FKZ kEq1J8+FtNGSiXtiYcqd2BtwTd+IwqyUIfEE1XUP6G7jAanEH6P9F+LSlfR/OB/X ND2hkgW2vbO/98p2WrtwW4rfNTb8wYmTxGKalgaChFy1EQAMOHRp5BslSKFeMrwD Bt9Ft9Ne1OReKcvdQ6AtKOZdZXF1ai5SWKHWxUtY/Ncf8UXFESLYEuoPBw37Uh5V R5tMVY8+QTSeOj3fcCB4VH+saJxoswVOQDQxCKGMjjZnC0dRhIKjtkbwYj7V4T/N RwIDAQAB -----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 421058753465396463297705931541723878430944 . . . . . . . . [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 'R10' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-27 06:06:54 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-09-25 06:06:53 +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 'iccs.cam.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 23512246786834751122433622962747056198254535582187543969280458070179792789745936550066070583917357897086959386566064617260977449050571647724518443005049527557556326092169992886122724884213441465597882063862903139879838639399075689736710536231455550118340334075742587247834664598120613078276272932894291235886091688333612885072268485373597425369276076123240971434145617790519116101098556612137280493939184002435825865023450390691133704000304924428380154713867524199280856083326746539920847873108945411986157810148979680746992585629915846554499904156008533828897344926578984767123623833687184243616903847660863375789383 . . . . . . . . . . . . . . . . . . . . [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) 8e191f07d9880ae1c3b2b150e60f2291f6322dc2 . . . . . . . . . . . . . . . . [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 bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8 . . . . . . . . . . . . . . . . [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 (75 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://r10.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://r10.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 'iccs.cam.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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f100770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d88473000001905884c6800000040300483046022100b7a0464033439b1baff46a0d820dc139b78691715788415f115710fb9b20c638022100c0fe807fb590f48f6993abe5dedc0be5dac286ade7578721249a846e759dbd7c00760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a74000001905884c6bd00000403004730450221009ce5db967fa9c007b72f8ca8e3b0111774efca1881220699a03c66294fb553a00220585318b75cedcf68bc269c7dda137bd773160f193138133c84a05d946c2f966a . . . . [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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