email.essex.ac.uk
Issued by R3
About this certificate
This digital certificate with serial number 03:30:cc:7e:a3:7c:b8:08:7f:ce:62:b4:c7:c9:ae:1e:22:fa was issued on by Let's Encrypt.
With 5 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=email.essex.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:30:cc:7e:a3:7c:b8:08:7f:ce:62:b4:c7:c9:ae:1e:22:faSerial Number (int): 277942231463944097476219677654847357592314
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: d3:6e:52:a6:82:bc:ea:85:56:ea:a6:c9:38:e3:57:2c:d9:40:80:c3
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 77:0c:3d:40:38:60:25:e6:b1:ea:ec:4d:01:bb:ed:60:59:f7:01:8e
Fingerprint (sha256): 07:6f:c7:06:87:fc:42:7f:f5:c2:f4:ea:48:72:a7:47:b0:40:8b:d2:08:66:da:ff:8c:fa:06:35:ad:d2:d6:d6
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate email.essex.ac.uk
5
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for email.essex.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
autodiscover.essex.ac.uk
autodiscover.ukdataservice.ac.uk
email.essex.ac.uk
isswin307.essex.ac.uk
isswin308.essex.ac.uk
autodiscover.ukdataservice.ac.uk
email.essex.ac.uk
isswin307.essex.ac.uk
isswin308.essex.ac.uk
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Certificate
The complete raw certificate details for email.essex.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFWjCCBEKgAwIBAgISAzDMfqN8uAh/zmK0x8muHiL6MA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzA3MTkwNjExMjJaFw0yMzEwMTcwNjExMjFaMBwxGjAYBgNVBAMT EWVtYWlsLmVzc2V4LmFjLnVrMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKC AQEAlJV3ipEtRWNniSizA9LIRLuDCH5DLoHUUZophkbQCqkBJH8ZdCxweDimc88r GXQr9Xgh05J9WzLPgfR6qjb7rsIiaugYOSXdmegpcG/uttYYJUKm+3j9segICVxB K15wvZgbJnl4ii6b/2p8ouPBkI8cAFNHeD8JZ916kXVtp78ejtNIWmsHrCTjNI0f Juq7414rrgruFIE43O4F8jLDFnmxOHhvKUS0GS00Cw1qLVpbR6IkoiRCppGe8BbD 8bSmofHI2aMRB725Tah3La61ZVIpwCM7FI6GqPV3UvFFMwUXEAU4L8SCWSSaHeVV EoAS3ioz9EPQskNGrnw0RAvcPwIDAQABo4ICfjCCAnowDgYDVR0PAQH/BAQDAgWg MB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0G A1UdDgQWBBTTblKmgrzqhVbqpsk441cs2UCAwzAfBgNVHSMEGDAWgBQULrMXt1hW y65QCUDmH6+dixTCxjBVBggrBgEFBQcBAQRJMEcwIQYIKwYBBQUHMAGGFWh0dHA6 Ly9yMy5vLmxlbmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0cDovL3IzLmkubGVuY3Iu b3JnLzCBhgYDVR0RBH8wfYIYYXV0b2Rpc2NvdmVyLmVzc2V4LmFjLnVrgiBhdXRv ZGlzY292ZXIudWtkYXRhc2VydmljZS5hYy51a4IRZW1haWwuZXNzZXguYWMudWuC FWlzc3dpbjMwNy5lc3NleC5hYy51a4IVaXNzd2luMzA4LmVzc2V4LmFjLnVrMBMG A1UdIAQMMAowCAYGZ4EMAQIBMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYAtz77 JN+cTbp18jnFulj0bF38Qs96nzXEnh0JgSXttJkAAAGJbP07DgAABAMARzBFAiBa 5uYtsaZ6An1utHqEX5cpEktYqWsPnBLgge+QvcTnmwIhAK4aA22DaoV2P3UJWJ79 dK9U50IttLOR/Gj7vVotTnC0AHYAejKMVNi3LbYg6jjgUh7phBZwMhOFTTvSK8E6 V6NS61IAAAGJbP07KwAABAMARzBFAiEAlIN6i+r8p3Fh9htblbYpbnZhWfvy4zch cHoj9OMSV9YCIE1uut3PRPNPKbAibZWYYIMYNT7wwG33aJaZxdsxFUdQMA0GCSqG SIb3DQEBCwUAA4IBAQCxZlbDqY+aK0X78VpGQk1mZnp8sOXyFhQdDthVxKsXClrB Del0PSQq7anvW/viR5H0b7DrWWtKxh9eERfybefLUyx4kpc/6+K7JeqpCZjJbar7 HXhpmvarMWGDsI/1m5Lm7wDd18WIIjtuIbDHd/SxmU4rTJrmAnvsOQSre3FZbuYp wPvCSSuVwFHhAkYIJK4dgWqysvUxLF+lCl9bFdRt4Mg2+FPjS+ktBbTHse57Y5Tw sxD2EflvnfJdJlr9/uxJc8fIWBcNTzT2+9/+5QANcKyBo3ObSqvoHguRF4A5L2OI vOPDSFFUnqToI1BZJAQ+FeBOL+L4BTlwPH3U8ltl -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlJV3ipEtRWNniSizA9LI RLuDCH5DLoHUUZophkbQCqkBJH8ZdCxweDimc88rGXQr9Xgh05J9WzLPgfR6qjb7 rsIiaugYOSXdmegpcG/uttYYJUKm+3j9segICVxBK15wvZgbJnl4ii6b/2p8ouPB kI8cAFNHeD8JZ916kXVtp78ejtNIWmsHrCTjNI0fJuq7414rrgruFIE43O4F8jLD FnmxOHhvKUS0GS00Cw1qLVpbR6IkoiRCppGe8BbD8bSmofHI2aMRB725Tah3La61 ZVIpwCM7FI6GqPV3UvFFMwUXEAU4L8SCWSSaHeVVEoAS3ioz9EPQskNGrnw0RAvc PwIDAQAB -----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 277942231463944097476219677654847357592314 . . . . . . . . [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 2023-07-19 06:11:22 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-17 06:11:21 +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 'email.essex.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 18756974039043121111407213707971462371298142208408674358506079986558972252072047309890836250571098350677942321544141864464465344550639047808193927531772792975064690961953660398830018413709304932275460567353963750483274444088100938082213722413671878975698556431521111500606153850369467397063370680518679133060589642223952686203474836565321835560549701488975129854715367345984846061015757901067391302621319270441880156558085946570842524041023961718751424865904864497053576258701573860589326954107392104285199238643844181145808044137316376350411125832897530073798708422678995690208537940385924787999744146958527092218943 . . . . . . . . . . . . . . . . . . . . [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) d36e52a682bcea8556eaa6c938e3572cd94080c3 . . . . . . . . . . . . . . . . [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 (127 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.essex.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.ukdataservice.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'email.essex.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'isswin307.essex.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'isswin308.essex.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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb499000001896cfd3b0e000004030047304502205ae6e62db1a67a027d6eb47a845f9729124b58a96b0f9c12e081ef90bdc4e79b022100ae1a036d836a85763f7509589efd74af54e7422db4b391fc68fbbd5a2d4e70b40076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb52000001896cfd3b2b000004030047304502210094837a8beafca77161f61b5b95b6296e766159fbf2e33721707a23f4e31257d602204d6ebaddcf44f34f29b0226d9598608318353ef0c06df7689699c5db31154750 . . . . [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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