*.direct.tm.net.my

- TELEKOM MALAYSIA BERHAD -

Issued by GeoTrust SSL CA

About this certificate

This digital certificate with serial number 02:f3:fa was issued on by GeoTrust, Inc..

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:
  • KeyUsage [DataEncipherment DigitalSignature KeyEncipherment] (00001101) inconsistent with multiple purpose ExtKeyUsage [clientAuth serverAuth] The certificate MUST only be used for a purpose consistent with both key usage extension and extended key usage extension. (RFC 5280, Section 4.2.1.12.)
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

TELEKOM MALAYSIA BERHAD

Company registration number: mm1-DzlXGXW-PpMPL33Hf-YD-vKO/nkD
Organization: TELEKOM MALAYSIA BERHAD
State / Province: Kuala Lumpur
Locality: Kuala Lumpur
Country: MY

GeoTrust, Inc.

Organization: GeoTrust, Inc.
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 02:f3:fa
Serial Number (int): 193530
Serial Number lenght: 18 bits, 3 octets

SubjectKeyId: 34:cc:92:e7:57:f0:9c:e7:a2:53:05:1c:19:0b:67:26:de:4c:8e:aa
AuthorityKeyId: 42:79:54:1b:61:cd:55:2b:3e:63:d5:3c:48:57:f5:9f:fb:45:ce:4a

Fingerprint (sha1): 98:d7:5d:0b:d9:07:70:d8:de:33:b8:26:05:2c:66:81:33:80:20:11
Fingerprint (sha256): 12:f0:c2:56:40:d1:32:85:a4:a8:98:7a:81:9e:13:e7:c0:18:87:8c:23:11:a9:c2:b8:b3:ec:b8:ea:d1:0a:35

Issuing Certificate URL: http://gtssl-aia.geotrust.com/gtssl.crt

Revocation information

OCSP Server: http://gtssl-ocsp.geotrust.com
CRL Distribution Point: http://gtssl-crl.geotrust.com/crls/gtssl.crl

Check the revocation status for certificate *.direct.tm.net.my

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for *.direct.tm.net.my

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA1 with RSA

Key Usage

Digital Signature
Key Encipherment
Data 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

*.direct.tm.net.my

Other certificates including the domain name tm.net.my

(limited to 100 certificates)

Certificate

The complete raw certificate details for *.direct.tm.net.my in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7R+JVQF4Ud7TioYmzOTF
w1sHqsjcHqvYgxpgZqdjqnpCbcLw0oIPu/gpmNkumY/39Ru4FOf0urZ8En2RN1R+
h+3/BeJT9+BWfB8EFMNJgS5qfw9kTPGMTKirt2t19eJTiXHCg5Bwh/kMqtRX5esi
hXrzsW5BNtLstpU0Ulc2to86XlmxUuxH0vjvDFNvWFhCdglR7FQQh5kEvcEkLSaQ
d9eCVvvTLMejlY68t0nwA5dB9hlPHJyxOPanmmem7X4eMOcj2g9tJ/Gi2teewwNT
LuT9FTMGbmYBLSLNJl/Q5xzYR7+r/xaEzAZXR0jExv+90ttaxAGdzqWgqUDidcli
2wIDAQAB
-----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 193530
 . . . . . . . . [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 '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 'GeoTrust, Inc.'
 . . . . . . . . . . . . [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 'GeoTrust SSL CA'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2014-08-16 15:42:52 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-09-06 05:28:03 +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 2.5.4.5 (serialNumber)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'mm1-DzlXGXW-PpMPL33Hf-YD-vKO/nkD'
 . . . . . . . . . . . . [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 'MY'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8 (stateOrProvinceName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Kuala Lumpur'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Kuala Lumpur'
 . . . . . . . . . . . . [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 'TELEKOM MALAYSIA BERHAD'
 . . . . . . . . . . . . [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:12|false] UTF8String '*.direct.tm.net.my'
 . . . . . . . . [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 29934029481696566752646077530002344178440573324705487088388198111523603958953443314809442763770131316561297467506664906330894538719585817609566215983574942296185321764454306057502806149868795833955019014152528003988575229792672607292388741533520687810475035042217273576817002735193827386688542869490978399085094752729704193252990222251905843620926303799838011379035357407022203498193411809550240975822150033568565058689146646445495018044666402014187876782916438304026147897930247797761826257447311603742153931556207016109341741064629480217053292992110746332142967504701690315379141535761428817412085693710510429135579
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 4279541b61cd552b3e63d53c4857f59ffb45ce4a
 . . . . . . . . . . . . . . . . [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 (4 bits)
							04b0
 . . . . . . . . . . . . . . . . [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 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.direct.tm.net.my'
 . . . . . . . . . . . . . . . . [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 (54 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://gtssl-crl.geotrust.com/crls/gtssl.crl'
 . . . . . . . . . . . . . . . . [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)
							34cc92e757f09ce7a253051c190b6726de4c8eaa
 . . . . . . . . . . . . . . . . [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 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://gtssl-ocsp.geotrust.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://gtssl-aia.geotrust.com/gtssl.crt'
 . . . . . . . . . . . . . . . . [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 2.16.840.1.113733.1.7.54
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://www.geotrust.com/resources/cps'
 . . . . [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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