free.com.tw

Issued by R3

About this certificate

This digital certificate with serial number 03:c0:68:3e:e9:41:26:4b:08:4c:ce:55:f2:21:56:6e:c2:8e 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): 03:c0:68:3e:e9:41:26:4b:08:4c:ce:55:f2:21:56:6e:c2:8e
Serial Number (int): 326809638609030904688206413361157520671374
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: c4:21:e4:47:ab:01:0d:4f:c4:a0:3d:6d:cc:0d:d8:da:61:57:a7:71
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 8b:f5:fb:01:56:a3:58:b4:06:91:e1:d1:db:d1:38:eb:7d:95:a6:40
Fingerprint (sha256): 12:90:99:37:80:0e:b8:be:c8:1d:a9:e5:30:18:c0:ca:ab:12:ce:34:38:90:04:c2:c8:57:d3:c6:3b:a2:6a:04

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

Other certificates including the domain name free.com.tw

(limited to 100 certificates)
free.com.tw
*.free.com.tw
*.free.com.tw
sni61871.cloudflaressl.com
ssl84401.cloudflare.com
incapsula.com
www.free.com.tw
sni34592.cloudflaressl.com
ssl84401.cloudflare.com
ssl94358.cloudflaressl.com
incapsula.com
ssl6739.cloudflare.com
incapsula.com
free.com.tw
free.com.tw
free.com.tw
free.com.tw
free.com.tw
ssl366450.cloudflaressl.com
incapsula.com
free.com.tw
ssl94358.cloudflaressl.com
ssl371610.cloudflaressl.com
ssl93421.cloudflare.com
free.com.tw
incapsula.com
free.com.tw
free.com.tw
incapsula.com
free.com.tw
incapsula.com
incapsula.com
ssl2447.cloudflare.com
incapsula.com
cdn.free.com.tw
ssl84401.cloudflare.com
incapsula.com
ssl94358.cloudflaressl.com
*.free.com.tw
free.com.tw
*.free.com.tw
incapsula.com
ssl326319.cloudflaressl.com
incapsula.com
sni61871.cloudflaressl.com
incapsula.com
free.com.tw
ssl94358.cloudflaressl.com
sni61871.cloudflaressl.com
incapsula.com
www.free.com.tw
incapsula.com
ssl900614.cloudflaressl.com
incapsula.com
ssl306146.cloudflaressl.com
ssl405465.yunjiasussl.com
free.com.tw
ssl326317.cloudflaressl.com
ssl900614.cloudflaressl.com
ssl388103.cloudflaressl.com
incapsula.com
ssl373600.cloudflaressl.com
free.com.tw
ssl366451.cloudflaressl.com
ssl94358.cloudflaressl.com
ssl405537.yunjiasussl.com
free.com.tw
ssl94358.cloudflaressl.com
ssl93421.cloudflare.com
ssl373600.cloudflaressl.com
ssl900616.cloudflaressl.com
ssl93421.cloudflare.com
ssl94358.cloudflaressl.com
free.com.tw
sni34592.cloudflaressl.com
free.com.tw
ssl373602.cloudflaressl.com
sni61871.cloudflaressl.com
free.com.tw
incapsula.com
ssl900615.cloudflaressl.com
www.free.com.tw
ssl2447.cloudflare.com
*.free.com.tw
ssl84401.cloudflare.com
free.com.tw
free.com.tw
cdn.free.com.tw
ssl2447.cloudflare.com
sni61871.cloudflaressl.com
sni61871.cloudflaressl.com
free.com.tw
*.free.com.tw
sni.cloudflaressl.com
incapsula.com
incapsula.com
ssl94358.cloudflaressl.com
incapsula.com
incapsula.com
ssl405079.yunjiasussl.com

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmsR4kqbflooZnoHZEYys
xSGDflI51q4b9ABWUv6neeRRsjr7wV48SY5PNWeJWoZA4OvfERxkDpPmXVCcZ8Io
S4cnhoHFuH59wO1s15QEzc3dCL6TsWUEGS3oI3+4TGatQX6geoWYQbu8x6a8p/yw
bKY76ZMDmAaURUSTtb9TGfqbhxZM2AFCRrHedHZ7WuYlMIb08Ci9AiXgTZS3COnV
qF5Hjz9u9wyCHLX7x0yXIybuiWecI8s61Wq9XKwLP4HIFJGmaWTkzifSNGcs/40+
88qnTo24S86EDN7u4Xw+htnJ1l0nXNEQoHDvbWhQQWfPoj97WQudb+vKCsAdhRIy
iwIDAQAB
-----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 326809638609030904688206413361157520671374
 . . . . . . . . [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 2023-12-28 19:01:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-27 19:01:31 +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 19537582419718325034748700890847448654569673405961014570052153870240260661010199598123446623344515554031129877653142395241757181197522800612334272244198588466859617988123035381857806590876384357088594837820931687973927326519893027624910885221461857378371180382877740438955447059188238506169948751359816091360243226006968292867940427839285039627154503869972635496097375299607950661493568354860834584489335210575213412318763088743078763296152005594522440190851573479474900329504581622659533991877932120382149529099249777936359272217370380841563164740805640061334086100026903185493775980275922075421322721121200992563851
 . . . . . . . . . . . . . . . . . . . . [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)
							c421e447ab010d4fc4a03d6dcc0dd8da6157a771
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00750029d03a1bb674aa711cd3035b6557c14f8aa78b4fe8389449eca453f944bd24680000018cb2048e83000004030046304402206713f82c556b31520201053431254a4fe0da1a5c2051633bedb8e7fc372c5cdb022079a2df0b3f0176e53588fcd9b5a9b6a05442c927ecf5a68c1621a4fa0e15335900760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018cb2048fa80000040300473045022100d3aa801b3f82cd682bfdc0c86afd204e76ae2628a0832b4ae0b23c600bff497f02207112830a2c9ec3fc5a3d9bd3c320206364f5a534bf0ba0ef24ce116037e318b9
 . . . . [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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