free.com.tw

Issued by R3

About this certificate

This digital certificate with serial number 04:a2:ff:8c:69:55:fe:df:79:5e:dd:9e:b5:77:8a:4d:1d:1b was issued on by Let's Encrypt.

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:
  • 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=free.com.tw

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:a2:ff:8c:69:55:fe:df:79:5e:dd:9e:b5:77:8a:4d:1d:1b
Serial Number (int): 403914569365184647644267316174618849254683
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 0c:a7:a5:b2:a1:48:a4:df:fe:4f:a4:1e:ce:f0:03:6f:b8:a0:40:a1
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 3a:7f:40:dd:a6:ba:b5:bb:9a:6f:db:27:24:5d:98:61:c6:48:dd:25
Fingerprint (sha256): 19:92:9b:92:cf:59:9d:f6:53:fa:f0:d1:01:fc:3b:c6:00:6a:52:63:01:77:33:d4:8e:4c:de:fb:4c:9b:53:c2

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate free.com.tw

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for free.com.tw

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

free.com.tw
www.free.com.tw

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Certificate

The complete raw certificate details for free.com.tw in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAphZnsyieaBySkZcYMwv4
+9zctBGhO5jcW+xJmjYizh4/nXbERhJhfoNUaAqPE+LHoptMJdBpqtfUzoo+F8zL
W3UKOl3AWaRm3Mr2jAdpqyckKTJocgJo+dLUNY0yAhMKv+mMlYd2GUmzMOUyKEMn
Ac7xGpzTYKo8pI9PGdeLuLYxLaoP6etbROCFsdaBsF7GTSSrqHMwFuWv3InMdN4Z
kWEBWy76DFfrh9861SMFBlh+YRSMxmmwfe34AMmNSQJo1SmmMXYMk2HHxCLA0v0z
wkj7f78tgYHNpK4+IiyDGgJInX0JCY9VnFeGsDVqbS7SZKyRlYBcjezEfflrX27q
jwIDAQAB
-----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 403914569365184647644267316174618849254683
 . . . . . . . . [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 2023-10-28 19:01:23 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-26 19:01:22 +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 'free.com.tw'
 . . . . . . . . [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 20966606979856023760933207477460165631177751199807554068545293815526964599331343915666738544001649856299105534099813000982274971933997932453992403965406530434375917454512502812648178910729295494881135816603215863023155183930533305345614952156965905306655920665565128757704907681435729064138849680778726928641448394305220170353875443398049712984721996230878297309126441114870933908186569803761835828526828308111136877618345152554775303402815952721848968912994197206782202824891333281570594270087599072651468230232304062034274711842035345929943222890650411374176760949653965070353869854210428238318149506178853865712271
 . . . . . . . . . . . . . . . . . . . . [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)
							0ca7a5b2a148a4dffe4fa41ecef0036fb8a040a1
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'free.com.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.free.com.tw'
 . . . . . . . . . . . . . . . . [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)
							00f1007700dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b77e0820a0000040300483046022100a11b3616e36f02bf502369a554127968b2c18cff127bb6a7d7c0226bed4798c9022100dc2c7a731da3b2aebc5ec4676b3886396349dd0f47c343c5f53e494c0eff03c6007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b77e082060000040300473045022048577bd69c150b0d6825502a30e236b9fa505131b27c1ff730306cc94ef6cbf3022100e903210be5012ca341edf6f7a3bd504e94cc8c5a98af3ffd0451dae5c15b3fe2
 . . . . [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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