topflag.com.tw

Issued by R3

About this certificate

This digital certificate with serial number 03:d7:e4:84:f3:ad:b3:45:46:35:2b:6a:36:de:eb:95:9d:a3 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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=topflag.com.tw

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:d7:e4:84:f3:ad:b3:45:46:35:2b:6a:36:de:eb:95:9d:a3
Serial Number (int): 334801320991894284367275950350271480438179
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 81:82:1b:94:a5:45:ca:20:6e:8d:42:41:2b:21:4e:33:93:8a:2b:c0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 25:ab:30:ea:4f:58:c6:6b:8f:49:95:60:af:29:a1:2d:fb:84:ea:b4
Fingerprint (sha256): 5a:dd:f2:c6:b6:42:bd:2b:de:1a:a9:1d:d9:07:6c:25:2a:46:ab:16:8f:29:c1:a5:d3:e4:6a:20:8f:dc:27:49

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

Revocation information

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

Check the revocation status for certificate topflag.com.tw

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for topflag.com.tw

Public Key Algorithm

RSA

Key Size

4096

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

topflag.com.tw
www.topflag.com.tw

Other certificates including the domain name topflag.com.tw

(limited to 100 certificates)
new.topflag.com.tw
123.topflag.com.tw
topflag.com.tw
topflag.com.tw
new.topflag.com.tw
topflag.com.tw
new.topflag.com.tw
topflag.com.tw
123.topflag.com.tw
topflag.com.tw
topflag.com.tw
topflag.com.tw
123.topflag.com.tw
new.topflag.com.tw
topflag.com.tw
topflag.com.tw
topflag.com.tw
topflagcom.mico.com.tw
topflag.com.tw
topflag.com.tw
topflag.com.tw
new.topflag.com.tw
topflag.com.tw
123.topflag.com.tw
topflag.com.tw
topflag.com.tw
new.topflag.com.tw
123.topflag.com.tw
123.topflag.com.tw
topflag.com.tw

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAz+Znf1mkWTPRl5sMY+yc
iF6gGSIAAkntotB4XNOlMvmyMnl6f5GVWECyZVz1FMyOD4o6NE9rgDxq546Ef5iz
WsIxcCUzyK5irAQdI+sRs6SO1aKAGa2Lapg4N9JZeOSFWByRa/iSq4vYHmCserZS
pYZ4d88zl1ZaCkdghGSq2igcMOumJkDCJ/zNQd2SV12UQap4kOYxxienQxuFdkoE
V/9FodjbXSaUtinPHAER3RPjyiJnNzvGz84qVgSyGDMgZ8kOnXOY0/ynU33QVjJu
NThd43wc7261bMMXSWMUOdtvWzouvPfba1KfUcKPZn7UKp5bfG2qolUEiOy+Yw/u
jfQ7c5GUA6KOugl1Y1ABaiGwi3AYEhLYqhvHFHs48S5OH4hqed67vKiAFeuFRuXu
QKawYILfHTR1/AvEFU4k6ielKZujsP4CqLfdLjwN71Bz+djSdmx/nhQ9/EmSnh35
ZVCweaCZ+NHCUIjss9yDyATI5Ff58xob0p8/scICnP6LzyNXygia0Sl5HMnPcl24
fyrLg+ivEfrW99CGOda14cC2jjvDZrRmTGn1C0i9UDLAADWE26g0/LHjoPsEdByk
2hAB9l+J2ZUs1X4wJJhrIVKa3ThN0eELcjNiri1PdtZZAQ4hlrogPFXEd7H8r2zn
8uYDavktz8JMYV4PsTMHPWUCAwEAAQ==
-----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 334801320991894284367275950350271480438179
 . . . . . . . . [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 2024-04-21 12:22:09 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-20 12:22:08 +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 'topflag.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 848158070058837664517809515988946993784667636727637370836901562407258508744579829920250241846205747750150692006016445516577908414621292399682545133154887117290587758420442196429458360070482248105945578830150406089816072337219431202801071590787223911178693222950179604444458086599537003510594687852574492225336105463056610815795377492894458892454210012366421768685118220444507572340783171203895123684641029966978254614567474353218358874213106351375762311318220490215460284845959229896164516211317752470418504772179819228054690354889845530237785340015438980906977393660857446369554134591794209826523159118488717123989243517011113184577484971858704238640589758301789447196566745322154929423066453739724500125571067220901668443173312703785439397880626936583726590935311649647966660633783835059316132995768231934644130319981146313387961416536130936417887408951820968677228215360214358115373459100469494507058647850873619099411072584199707017337168146213559172225844359924831725380681692342251195159861202057229614608070573306572341367250179329134350931070829185679237809332837668241840565088447894142823779550357473825330867952115192721796838765586004361965322399317863796826414806862209737910963853737479210060283038215460817463853661541
 . . . . . . . . . . . . . . . . . . . . [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)
							81821b94a545ca206e8d42412b214e33938a2bc0
 . . . . . . . . . . . . . . . . [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 (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'topflag.com.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.topflag.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f00d23cf90000040300463044022022ca1733810d1a5727371713c0111e4e8895dff0fa0633cdebab90dd2e3d1b7f022049549d68e14c92ba5b457868cadf7f7a57f0c608ab7723543ecb17b80d088aef007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018f00d23cff000004030046304402201d33d705fc2604a4a705906219186d8444ac8832dad4670b5400159d013463c9022012a493d9d828edf134773e915fc8df11ebf8f10ca56fb6327276914e1ed3a51a
 . . . . [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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