DV SSL/TLS Certificate for www.yuc.com.tw

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the www.yuc.com.tw DV SSL/TLS Certificate

This certificate with serial number 06:95:fb:eb:c0:35:04:ba:d5:b3:89:60:f6:a8:26:7c:0f:70 for www.yuc.com.tw was issued on by Let's Encrypt.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for www.yuc.com.tw provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 06:95:fb:eb:c0:35:04:ba:d5:b3:89:60:f6:a8:26:7c:0f:70
Serial Number (int): 573710648576908280828172165976540101480304
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 34:06:24:6e:43:d3:33:d7:3b:12:a8:02:5b:f5:5c:85:64:40:0c:c2
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): 90:06:8d:f9:87:b1:ae:d1:fd:4a:09:82:ae:b6:64:39:c4:35:ed:80
Fingerprint (SHA-256): 27:91:fb:5e:5a:d9:31:86:55:93:e9:d1:4d:aa:3c:17:e8:6d:c3:ea:83:66:16:8a:15:9d:73:0b:40:ef:ed:11

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/113.crl

Check the revocation status for certificate www.yuc.com.tw
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for www.yuc.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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for www.yuc.com.tw in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyMAS3WsiepVbpjeIvaaS
9kjgvvwAV1JEMOhhTEC0bQ1YeeuyCGsL2z1PAtERPJY07uKjnbbnORCeDLMknILN
HOWVfy/T3jIMhd30We7PUKN4x+OP/LyhdLJyw+3rlnvpr5ETUckgikOwBPV92bvP
VkiHq8lkzzugir5s+6RqHbsDjpnppLra0yjDs4F1sFKu8OcvfD8CsPt1vMvQKXMJ
p9vjbaVI13Fa8wcM6Tuq6ki1b3GEedalhgXazygt38LCublOjYP+kj9Qmf+e2Vpk
4B0ZnvdAq/pKK6+gHKCd+etnryXPv0KXp2UKqxpCRglg1swybOt3+k/r7aPPgMRc
owIDAQAB
-----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 573710648576908280828172165976540101480304
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-05-28 01:49:23 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-26 01:49:22 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.yuc.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
 . . . . . . . . . . . . . . . . [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 25342376060361234891341611784161760802933162760605579315896478852719673261006959882517033177592320142103815639219377086144746296998805496679843168171785896607047737956119543947005516855814464092155223201099121546830428521137098509886132014325464733872007593985296997589739263076921152796101403559093651835528173454962982178302947814400239430969287132829020120299444030227663979263507677469326049011421833152855587535027383090874640132751450326591885819778144293140997228820827262472263294329275210748493393858752583663887290409120158852903405370038329660307931188635973089476167353766703801631706866844969565476379811
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							3406246e43d333d73b12a8025bf55c8564400cc2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (30 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.yuc.com.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'yuc.com.tw'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (40 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://r10.c.lencr.org/113.crl'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a0000019714ca06000000040300473045022100f9027090dfd68aa72a16269e8187f6747be5cfa059d521195750a77596e984f102204d310421d86a25b643e6b495305beaee300f32321267b48f8c927a8b7c6fc585007600ed3c4bd6e806c2a4a20057dbcb24e23801df512fedc486c5700f20ddb73e3fe00000019714ca0d960000040300473045022079cd2fca5924cb5d28b2151f25c9810675c6c63b0e26c9521304366ae191d0fe022100d550b297125f1687e7975785ea5aa46d225057111c207f252cac60a48d6266f0
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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