oubs-business-exchange.kmi.open.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:b0:50:a6:c7:a6:d4:40:64:b6:85:57:65:d2:2b:b5:d8:ac 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=oubs-business-exchange.kmi.open.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:b0:50:a6:c7:a6:d4:40:64:b6:85:57:65:d2:2b:b5:d8:acSerial Number (int): 321333758583724294333632708908333435050156
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: a1:64:10:d2:48:82:15:22:9d:b7:c7:c6:81:5d:a5:d4:a9:91:0b:f8
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 65:ef:ff:fb:6d:a0:8e:5e:15:73:1f:2a:d9:bc:4e:b7:b0:5b:cd:05
Fingerprint (sha256): 06:8a:51:d9:e1:b1:89:e9:d8:8b:01:47:fb:db:01:bf:3e:56:76:a5:0c:3d:f4:7e:16:56:f7:e9:3a:b1:d4:bb
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate oubs-business-exchange.kmi.open.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for oubs-business-exchange.kmi.open.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
oubs-business-exchange.kmi.open.ac.uk
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Certificate
The complete raw certificate details for oubs-business-exchange.kmi.open.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFgjCCBGqgAwIBAgISA7BQpsem1EBktoVXZdIrtdisMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA0MjcyMjI2NTRaFw0x OTA3MjYyMjI2NTRaMDAxLjAsBgNVBAMTJW91YnMtYnVzaW5lc3MtZXhjaGFuZ2Uu a21pLm9wZW4uYWMudWswggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC3 b6cvD+rLGwrgC6IhDnTewz6AvrxQTyNWkSu4CrdmJLqtE3KOemLgR96Zs5QjwDYd 4bP/9x2yNN7pf1oafAiNsrlcnWBQ2TJt8/fO8BwGVotxAA1V3fwFKTYn6X5xo7wx Bq7n2rxiLepxGbYPLwutM6wIz/iCNdYimfqym+MmEE6nwfQzMHAkB4wfmsrmyYlI ZhqdWzommBhaDOKLFw6eb0jAd2c47FKr0Tma57ZvhFBY8lOCH7IXuT+P3p4MJz4X PwHZTYmU6yxbQqtzLUQiZGjMigdsuZIhJLQNqt7hHhr5Yv2qhFaCYbkf36/ioR/H UB4ALVS7afqgQggPf6ZrAgMBAAGjggJ6MIICdjAOBgNVHQ8BAf8EBAMCBaAwHQYD VR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0O BBYEFKFkENJIghUinbfHxoFdpdSpkQv4MB8GA1UdIwQYMBaAFKhKamMEfd265tE5 t6ZFZe/zqOyhMG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29j c3AuaW50LXgzLmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2Nl cnQuaW50LXgzLmxldHNlbmNyeXB0Lm9yZy8wMAYDVR0RBCkwJ4Ilb3Vicy1idXNp bmVzcy1leGNoYW5nZS5rbWkub3Blbi5hYy51azBMBgNVHSAERTBDMAgGBmeBDAEC ATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNl bmNyeXB0Lm9yZzCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB2AHR+2oMxrTMQkSGc ziVPQnDCv/1eQiAIxjc1eeYQe8xWAAABamEffHIAAAQDAEcwRQIhAOTaQKt5p8aL 2TLndgZ7OO46qudvZtvTDV+LgbSUuhpRAiBbWst4Fsm4IlW5SsKvFgeFymaSiJwo 8tLDgEiel5vKwwB2AGPy283oO8wszwtyhCdXazOkjWF3j711pjixx2hUS9iNAAAB amEffJUAAAQDAEcwRQIgDu1s026ycygNxc9KlvrYFsN6ivdIm901cXCOnCoVwpYC IQCk2RxClcqmN1aqOiPQ952FI+tBt5WsuBvPM8H6EY+pkzANBgkqhkiG9w0BAQsF AAOCAQEAbX7UjE3EMKsHyeNksZlTXk/2eaQWUQ9T5HW5zRXxhxfqEnqBqY3Z/MP8 qK8U2f8iPFqjrtiIwl4Fwd5r8FfgXTHIVo/hACoHyOV81gvJTZ9+VsiGx4226XrH RmmCKgRQbi6nDLAXZjYBkQJdnJSf/VT15Qtey4XITOY5zOtBBsiVsfF9SCBDuGZi qSbI24V6ngnEUI5smw5VxDjmOaG9o8pOJMREInzcPTDuzmuBIoLL7GheLrlFtnH2 qwiO1MOHT7HC/ch70hEr8Q28/NrMnmcD5x0QWBgOJgVVJpjjXyqndj1YvrxLOEls FEbRbRBqDCxaaz7daueGaQsdNjPyuA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAt2+nLw/qyxsK4AuiIQ50 3sM+gL68UE8jVpEruAq3ZiS6rRNyjnpi4EfembOUI8A2HeGz//cdsjTe6X9aGnwI jbK5XJ1gUNkybfP3zvAcBlaLcQANVd38BSk2J+l+caO8MQau59q8Yi3qcRm2Dy8L rTOsCM/4gjXWIpn6spvjJhBOp8H0MzBwJAeMH5rK5smJSGYanVs6JpgYWgziixcO nm9IwHdnOOxSq9E5mue2b4RQWPJTgh+yF7k/j96eDCc+Fz8B2U2JlOssW0Krcy1E ImRozIoHbLmSISS0Dare4R4a+WL9qoRWgmG5H9+v4qEfx1AeAC1Uu2n6oEIID3+m awIDAQAB -----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 321333758583724294333632708908333435050156 . . . . . . . . [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 2019-04-27 22:26:54 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-26 22:26:54 +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 'oubs-business-exchange.kmi.open.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 23156667985639145779497611135484555254759133240288891112911118128252734679281592093612141313776905214877769401797312828706407965202093002229361831828690345754186850061027645113568374617762909858803767641200490116693347864567123702451783929736158694672135611575095568483382401107933836304892612705280177827785643554100366452944145720742130006078809095435906466875117114263049683157599567678715369816388359253278488094420807734900563291838925163147577216974988192307736486125098720440594462679803328622380212516878183403590775394521547894670649149876275389825549955591198336265627537261377891832691429081340082091173483 . . . . . . . . . . . . . . . . . . . . [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) a16410d2488215229db7c7c6815da5d4a9910bf8 . . . . . . . . . . . . . . . . [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 (41 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'oubs-business-exchange.kmi.open.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) 00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016a611f7c720000040300473045022100e4da40ab79a7c68bd932e776067b38ee3aaae76f66dbd30d5f8b81b494ba1a5102205b5acb7816c9b82255b94ac2af160785ca6692889c28f2d2c380489e979bcac300760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016a611f7c95000004030047304502200eed6cd36eb273280dc5cf4a96fad816c37a8af7489bdd3571708e9c2a15c296022100a4d91c4295caa63756aa3a23d0f79d8523eb41b795acb81bcf33c1fa118fa993 . . . . [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) 006d7ed48c4dc430ab07c9e364b199535e4ff679a416510f53e475b9cd15f18717ea127a81a98dd9fcc3fca8af14d9ff223c5aa3aed888c25e05c1de6bf057e05d31c8568fe1002a07c8e57cd60bc94d9f7e56c886c78db6e97ac74669822a04506e2ea70cb01766360191025d9c949ffd54f5e50b5ecb85c84ce639cceb4106c895b1f17d482043b86662a926c8db857a9e09c4508e6c9b0e55c438e639a1bda3ca4e24c444227cdc3d30eece6b812282cbec685e2eb945b671f6ab088ed4c3874fb1c2fdc87bd2112bf10dbcfcdacc9e6703e71d1058180e2605552698e35f2aa7763d58bebc4b38496c1446d16d106a0c2c5a6b3edd6ae786690b1d3633f2b8