DV SSL/TLS Certificate for ryantang.site

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the ryantang.site DV SSL/TLS Certificate

This certificate with serial number 05:c5:79:c7:c8:b2:15:02:15:d4:a8:b2:6f:aa:04:b0:ab:00 for ryantang.site was issued on by Let's Encrypt.

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 ryantang.site 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): 05:c5:79:c7:c8:b2:15:02:15:d4:a8:b2:6f:aa:04:b0:ab:00
Serial Number (int): 502758929867381969150747319541596949621504
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 16:8a:bc:b7:56:ea:13:e4:75:e2:9c:b2:fd:00:92:06:84:dc:cc:76
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): 92:a1:be:bb:c8:a4:9e:7d:0f:96:51:35:a2:49:e0:15:55:92:fb:cf
Fingerprint (SHA-256): d8:b3:2f:8e:78:42:e1:bd:4b:65:a1:07:5e:0a:ec:b2:d8:c4:ad:b1:42:8a:b0:2a:99:fd:e0:eb:b1:75:41:f1

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

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/1.crl

Check the revocation status for certificate ryantang.site
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for ryantang.site

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Key Encipherment
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

ryantang.site

X.509 Certificate

The complete raw X.509 certificate details for ryantang.site in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwVW558w4tDgc+G9KiJYU
NTUAUvN6xewBqtNCd7A0jtXk22K+/glcMH8+g23p8kK29p37hC1oiiTygBk9Hu8t
WYRfSUkyiZARgKEcp4X01njCCIbeYUYQfqoFO7+khB+iDERAnMER1T3t5+vKk5nU
0bejXfdDCkb8BkZxkXMI/zQAv6x2jSJhVMlaONLUZDzWXG0nmt4PS46UKscHa4cM
tU83mJV3hwp8nlojhSfucuH3o3rqcxv36yaNJLfAyC4iYaXKJi+xFMAws3QKCeVh
OjriQ+4JSKvf/2Yr7DtxmL6nxdBmsVvPtxFZwRrIcQm0Akw6z6/80/0D/Gu7GWyl
7QIDAQAB
-----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 502758929867381969150747319541596949621504
 . . . . . . . . [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 2025-07-15 02:58:29 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-10-13 02:58:28 +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 'ryantang.site'
 . . . . . . . . [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 24406266019859928479195707230014062707024889313110774940543890707071110511878699026142113904793750253109360868131787541330131644720172725416210066069225673415201114826173238933139211237828512901879912559925611824641737981803405382746966050287431677012086407453139961622930035156673311172684681568977944585601687078559444982390139593067244384040720243581274935651163994689296072552680817703997052730798993993300592646168603686109934213179102279643543757276349086167690609886711623869774172046383235638905217333658290230200452577050494207285626712668650984796744351720036190087527988609349341939550486492480523178124781
 . . . . . . . . . . . . . . . . . . . . [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)
							168abcb756ea13e475e29cb2fd00920684dccc76
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ryantang.site'
 . . . . . . . . . . . . . . . . [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 (38 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/1.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa34000001980c3a8a800000040300463044022036d9442e10037e06caf03d490509384ceed5692065c88d1a59473f5ab04e111d02200f3aa367e9bcafe65d53c3ce1b7c189be6110b946e3ba61a798c9e2f7d9ac698007500ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db0000001980c3a8a8d0000040300463044022011f988e9c3203c1d80e8126e1bb2477a984ff62ef71ae308da93a9498a706e8e0220360d54b46c91be714de89283889ab490c834a9c1f5d3c7896be5048dc73903d8
 . . . . [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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