www.ntu.ac.uk
Issued by GlobalSign Domain Validation CA - G2
About this certificate
This digital certificate with serial number 11:21:f4:d3:24:1d:90:ae:a6:1f:f8:55:f6:88:2c:a7:6e:15 was issued on by GlobalSign nv-sa.
With 2 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:
Certificate Subject
CN=www.ntu.ac.uk,OU=Domain Control Validated,C=GB
GlobalSign nv-sa
Organization:
GlobalSign nv-sa
Country:
BE
This certificate has expire since
Certificate Details
Serial Number (hex): 11:21:f4:d3:24:1d:90:ae:a6:1f:f8:55:f6:88:2c:a7:6e:15Serial Number (int): 1492463606886432972031899069835829318217237
Serial Number lenght: 141 bits, 18 octets
SubjectKeyId: 06:8c:32:94:7e:07:8e:7f:81:9d:c8:86:ef:3c:61:dc:92:bc:c7:a9
AuthorityKeyId: 96:ad:fa:b0:5b:b9:83:64:2a:76:c2:1c:8a:69:da:42:dc:fe:fd:28
Fingerprint (sha1): 3c:28:37:b0:4a:0b:f8:01:02:0a:23:03:6d:2f:10:72:a4:05:ff:09
Fingerprint (sha256): 05:3d:ce:33:38:63:e9:5d:11:d9:7d:3a:1d:cb:99:60:16:06:ec:06:ca:3d:1b:fd:50:7e:4f:ca:4d:c5:12:32
Issuing Certificate URL: http://secure.globalsign.com/cacert/gsdomainvalg2.crt
Revocation information
OCSP Server: http://ocsp2.globalsign.com/gsdomainvalg2CRL Distribution Point: http://crl.globalsign.com/gs/gsdomainvalg2.crl
Check the revocation status for certificate www.ntu.ac.uk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.ntu.ac.uk
Public Key Algorithm
RSA
Key Size
4096
Signature Algorithm
SHA1 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
www.ntu.ac.uk
ntu.ac.uk
ntu.ac.uk
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Certificate
The complete raw certificate details for www.ntu.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF6jCCBNKgAwIBAgISESH00yQdkK6mH/hV9ogsp24VMA0GCSqGSIb3DQEBBQUA MFcxCzAJBgNVBAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMS0wKwYD VQQDEyRHbG9iYWxTaWduIERvbWFpbiBWYWxpZGF0aW9uIENBIC0gRzIwHhcNMTIw NTA2MTgwNjI5WhcNMTMwNTA3MTgwNjI5WjBIMQswCQYDVQQGEwJHQjEhMB8GA1UE CxMYRG9tYWluIENvbnRyb2wgVmFsaWRhdGVkMRYwFAYDVQQDEw13d3cubnR1LmFj LnVrMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsLYA7JXG0IlGojWf b5txU5he1a4C9IcugR5wN2Kb+36XazB6XW8rBeyODkuod6g/I8MsOZyVl0BS4DD4 YFSRuxtjbfuDkUW27VCLXDyp7xN5upsK4c0qkfWO7lqucj9bF/3a3O6y+OZguYbE UVmxyZa7b47TE36gHgwL6U7wjGlvPlcpJjFKBRthoHkcEMZJg2UnJeB6j1KPQHQs 2zxhgcOfGfsDNQuDc26nZo07qu9UX7L182PX3OBdVi+j9WbymkMPjyyE86XahdH8 oSPXzSHGmGKNB94vwW2hOYZQHFITC3Y+CzGuGSQN7H6XfTjkFE8+/UyxWW9ETfWT YVWKyYXhW+vi7oid2vgjDZuN+wIhEX7LmjYYsJ9ueHcDhV2I2tnJmGE3lJPjh2Ea 9YeY68DDvIU0R+2R/3L7X1rBFNqJARQQsfuxbja8BYDP/qT+skrWuwHnLapt776c krIoYWg6R8fbDoMAFMiMN0etcq47B8pK+TGB/ysFalV7lgZW0x0mj5/E1wdKzEED ucjOWdaTTaAPLme7xpngizQXw3fEvnYJSmX7UfRfC4zc9DhPrYcwy4LBJhBIVHJb B8yg9+qxJ8oHKy11S4NjBTZmTjazlcJtpRId4Id9vf+Wg/Df/K1sa6+/OkMFpjXA wF/lTUCVciAPgbUm9djc+6gQGB8CAwEAAaOCAb0wggG5MA4GA1UdDwEB/wQEAwIF oDBMBgNVHSAERTBDMEEGCSsGAQQBoDIBCjA0MDIGCCsGAQUFBwIBFiZodHRwczov L3d3dy5nbG9iYWxzaWduLmNvbS9yZXBvc2l0b3J5LzAjBgNVHREEHDAagg13d3cu bnR1LmFjLnVrggludHUuYWMudWswCQYDVR0TBAIwADAdBgNVHSUEFjAUBggrBgEF BQcDAQYIKwYBBQUHAwIwPwYDVR0fBDgwNjA0oDKgMIYuaHR0cDovL2NybC5nbG9i YWxzaWduLmNvbS9ncy9nc2RvbWFpbnZhbGcyLmNybDCBiAYIKwYBBQUHAQEEfDB6 MEEGCCsGAQUFBzAChjVodHRwOi8vc2VjdXJlLmdsb2JhbHNpZ24uY29tL2NhY2Vy dC9nc2RvbWFpbnZhbGcyLmNydDA1BggrBgEFBQcwAYYpaHR0cDovL29jc3AyLmds b2JhbHNpZ24uY29tL2dzZG9tYWludmFsZzIwHQYDVR0OBBYEFAaMMpR+B45/gZ3I hu88YdySvMepMB8GA1UdIwQYMBaAFJat+rBbuYNkKnbCHIpp2kLc/v0oMA0GCSqG SIb3DQEBBQUAA4IBAQBLPb6fKcaw91QZskVCTjQqyUo3OZDd4R0l6hybF0sCOJJ+ zIJh8NlIcbbdDYpi1PTB2fAixPe7hho+CYJtSSgDew+cbWu3LE0hXE5be1nuTLIt YarHi2mMIpAo+cyeJZHsA9oN7ZBAr7wEn/Bq3PzLHI4SCkv2iYUteGY6ik/54W1w JUY0B16CvyW+JaTKweNgmxRrE3VFgSe8hhFPffb2nUm8ytPUlBQ6zKkqsBzdaI6X 7pmIQ+AfpxZ7B5AL0vNI9gh5ddDj+Q4CmJxlNKgkMi2L5/0cZROWIu/Mi9Uyn1se j3acF0LsUKF4m+YoPai7J98g3VCjN4buXCv07VMF -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsLYA7JXG0IlGojWfb5tx U5he1a4C9IcugR5wN2Kb+36XazB6XW8rBeyODkuod6g/I8MsOZyVl0BS4DD4YFSR uxtjbfuDkUW27VCLXDyp7xN5upsK4c0qkfWO7lqucj9bF/3a3O6y+OZguYbEUVmx yZa7b47TE36gHgwL6U7wjGlvPlcpJjFKBRthoHkcEMZJg2UnJeB6j1KPQHQs2zxh gcOfGfsDNQuDc26nZo07qu9UX7L182PX3OBdVi+j9WbymkMPjyyE86XahdH8oSPX zSHGmGKNB94vwW2hOYZQHFITC3Y+CzGuGSQN7H6XfTjkFE8+/UyxWW9ETfWTYVWK yYXhW+vi7oid2vgjDZuN+wIhEX7LmjYYsJ9ueHcDhV2I2tnJmGE3lJPjh2Ea9YeY 68DDvIU0R+2R/3L7X1rBFNqJARQQsfuxbja8BYDP/qT+skrWuwHnLapt776ckrIo YWg6R8fbDoMAFMiMN0etcq47B8pK+TGB/ysFalV7lgZW0x0mj5/E1wdKzEEDucjO WdaTTaAPLme7xpngizQXw3fEvnYJSmX7UfRfC4zc9DhPrYcwy4LBJhBIVHJbB8yg 9+qxJ8oHKy11S4NjBTZmTjazlcJtpRId4Id9vf+Wg/Df/K1sa6+/OkMFpjXAwF/l TUCVciAPgbUm9djc+6gQGB8CAwEAAQ== -----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 1492463606886432972031899069835829318217237 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . . . . . [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 'BE' . . . . . . . . . . . . [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 'GlobalSign nv-sa' . . . . . . . . . . . . [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 'GlobalSign Domain Validation CA - G2' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2012-05-06 18:06:29 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2013-05-07 18:06:29 +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 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'GB' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Domain Control Validated' . . . . . . . . . . . . [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 'www.ntu.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 720917785455531723254827774716347764395310664788272514770108697247191613431442813157716431034274483621461853947262955829516690477275146232560476714852568337164074565057234353553007466443984799489619692680988614583818921878216970770545830914406764674176124678114144664494716125068627442585352567819929605649430546246529179781116133498745518427160186026221381455632233296467448667017917906458793027109948586375575806732690224919348171253506839128612250653191153115775310905933785726399166134470222825930671522752214750439825061628690067747843715190138391675430501435001836102127115794003665337960267485159407379032758623705432860401406678537604330807138191987971390964615822300169867868355333439246599833344145948022560349907259102083138905219991488963473634209145720479334551364177887608191732887592735265373535398838667000333510280919339152074519589103973872537266558837087888166387658245712443957819670482962924519177143067550905512648692701771139568562530314367221356668554433686834067864671084234364583492020293215096931439946905069505685888014535654145736119890124856180216297720398992505945304006428846268293831746382622634415934610430352005811661873214248093059228916504503993648098469293352287112358743645078428530980559001631 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.32 (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 1.3.6.1.4.1.4146.1.10 (globalsignDVPolicy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'https://www.globalsign.com/repository/' . . . . . . . . . . . . . . . . [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 (28 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ntu.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ntu.ac.uk' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [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 2.5.29.37 (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 2.5.29.31 (cRLDistributionPoints) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (56 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.globalsign.com/gs/gsdomainvalg2.crl' . . . . . . . . . . . . . . . . [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 (124 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://secure.globalsign.com/cacert/gsdomainvalg2.crt' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://ocsp2.globalsign.com/gsdomainvalg2' . . . . . . . . . . . . . . . . [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) 068c32947e078e7f819dc886ef3c61dc92bcc7a9 . . . . . . . . . . . . . . . . [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 96adfab05bb983642a76c21c8a69da42dcfefd28 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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