DV SSL/TLS Certificate for sttkokuho.or.jp

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the sttkokuho.or.jp DV SSL/TLS Certificate

This certificate with serial number 06:77:13:44:42:8a:a0:e1:15:3e:b7:a1:90:98:ee:59:d5:ef for sttkokuho.or.jp 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 sttkokuho.or.jp 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): 06:77:13:44:42:8a:a0:e1:15:3e:b7:a1:90:98:ee:59:d5:ef
Serial Number (int): 563192927011881760779935069067459268564463
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 36:c1:ef:af:e8:30:cb:42:cd:d3:04:f9:b2:c4:a5:e5:f3:1f:03:f8
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): 53:52:93:d8:2e:7b:e3:f7:87:d4:fd:9b:ef:d2:c4:c1:1a:6f:a8:77
Fingerprint (SHA-256): 3a:5b:cb:42:9a:b5:7a:c8:b8:6b:0c:7c:88:b5:32:20:02:74:7f:a3:a7:dc:f7:a5:5d:05:ac:52:84:fb:09:7e

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/112.crl

Check the revocation status for certificate sttkokuho.or.jp
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for sttkokuho.or.jp

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

X.509 Certificate

The complete raw X.509 certificate details for sttkokuho.or.jp in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFDjCCA/agAwIBAgISBncTREKKoOEVPrehkJjuWdXvMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNSMTEwHhcNMjUwNjAyMDAzNDM5WhcNMjUwODMxMDAzNDM4WjAaMRgwFgYDVQQD
Ew9zdHRrb2t1aG8ub3IuanAwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB
AQC2Vj9QHiBuMxuk6j0dKAzE32jMBwz73Zg4TCk/WU1iHUwmN1ixw04tPgFMJTT5
5q0ogIZVH20XKLgLzLrhiEDDp4Npf7yK8FcaXFGde3fcuSQsYC0F2+Yyb7Tap7ZF
EczZ2C5vwLmSqVeX14gMczNqqO9BlqGkOmqVUJBHUyBK0F8x3cgbaf9AYAHd4VvD
rTuMaZr2WogT931RNqBExBMNsi2CIEoEA9y2I/vL6pYVj5wLB9QBfrmx2dP9oKvU
LIJj3fOvyZefJ1aXLD4AoBg9pRxMYj/T9JMChimhALkUrjmPgszi6trDG5my+LB6
AeNBRIaOzy+RxiS31GVtZQ3BAgMBAAGjggIzMIICLzAOBgNVHQ8BAf8EBAMCBaAw
HQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYD
VR0OBBYEFDbB76/oMMtCzdME+bLEpeXzHwP4MB8GA1UdIwQYMBaAFMXPRqTq9MPA
emyVxC2wXpIvJuO5MDMGCCsGAQUFBwEBBCcwJTAjBggrBgEFBQcwAoYXaHR0cDov
L3IxMS5pLmxlbmNyLm9yZy8wLQYDVR0RBCYwJIIRKi5zdHRrb2t1aG8ub3IuanCC
D3N0dGtva3Voby5vci5qcDATBgNVHSAEDDAKMAgGBmeBDAECATAvBgNVHR8EKDAm
MCSgIqAghh5odHRwOi8vcjExLmMubGVuY3Iub3JnLzExMi5jcmwwggEEBgorBgEE
AdZ5AgQCBIH1BIHyAPAAdgDM+w9qhXEJZf6Vm1PO6bJ8IumFXA2XjbapflTA/kwN
sAAAAZcuRWYCAAAEAwBHMEUCIQCpKHJ/fIjiICqQC3s4MGJFbqxQgBsSxJfd3Z/R
0AIJ+wIgbYbrrpIz7GN77ugKNpgSNtKnsSJI4bnYerZRNZMzkxgAdgCkQsUGSWBh
VI8P1Oqc+3otJkVNh6l/L99FWfYnTzqEVAAAAZcuRWYBAAAEAwBHMEUCIQDgewQp
Af0JGPpRMEnXLXO4ZQ1GUXcY48zMQgcJBrxhIAIgRJWf2+XSYTlaFh4D4kTHc1L4
BOi5L+eph2m3zvygtqUwDQYJKoZIhvcNAQELBQADggEBAC+zowuzdxv4BVnrSqx7
k4JiHUTYAUtQ8riBbTeywxPsc+e0vs2+K16mhJJ5tFiNOkRl0jQAlBhp1i1z3u2W
/dkgUeH8BAS1SeXknJ2Q1Fye/dOELl4XecqzsZ1ZcJjQbOd9CWx/zanisG4vLPL7
bfcTtma0H25AKDC+hnqsh3PfSGsbEXkIcrtrhNBlCf169PdIfyyI3S99GcKkoI5R
7MNbqmiGwt81ZWEPQd9Bfp9ZSN+Wv/1thaZIEDm7dcL3ZeDjbrco/QE4dgjv4TzG
nU3w8NOIcYeLBq6e3uxn65GR1oxsC+ggrRvV4NyXIa2315Hh7418XzSqPU40l3jc
MqQ=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtlY/UB4gbjMbpOo9HSgM
xN9ozAcM+92YOEwpP1lNYh1MJjdYscNOLT4BTCU0+eatKICGVR9tFyi4C8y64YhA
w6eDaX+8ivBXGlxRnXt33LkkLGAtBdvmMm+02qe2RRHM2dgub8C5kqlXl9eIDHMz
aqjvQZahpDpqlVCQR1MgStBfMd3IG2n/QGAB3eFbw607jGma9lqIE/d9UTagRMQT
DbItgiBKBAPctiP7y+qWFY+cCwfUAX65sdnT/aCr1CyCY93zr8mXnydWlyw+AKAY
PaUcTGI/0/STAoYpoQC5FK45j4LM4urawxuZsviwegHjQUSGjs8vkcYkt9RlbWUN
wQIDAQAB
-----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 563192927011881760779935069067459268564463
 . . . . . . . . [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 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-02 00:34:39 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-31 00:34:38 +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 'sttkokuho.or.jp'
 . . . . . . . . [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 23017901640584864682680031583666701123750249882445398348986381055021009023030788892212970741500100222946192140273399271176855646600138761332016395218301448693223364105183510104159700696562226349711184802487485521856312326506589411817952143440333967228651926896384957755830844090833604371547557910062012867507210143304255852586035224237480041725547908017416511364277541922797369102307310500360506610978803030385377288295345442846902293324953590593369980702563102844689986798398580393472645633026348802668529448803871980469939260871415413593531911202810395205159343601057313570057056311525622425299083521290574168919489
 . . . . . . . . . . . . . . . . . . . . [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)
							36c1efafe830cb42cdd304f9b2c4a5e5f31f03f8
 . . . . . . . . . . . . . . . . [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 c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [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://r11.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 (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.sttkokuho.or.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sttkokuho.or.jp'
 . . . . . . . . . . . . . . . . [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://r11.c.lencr.org/112.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)
							00f0007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db0000001972e4566020000040300473045022100a928727f7c88e2202a900b7b383062456eac50801b12c497dddd9fd1d00209fb02206d86ebae9233ec637beee80a36981236d2a7b12248e1b9d87ab6513593339318007600a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a8454000001972e4566010000040300473045022100e07b042901fd0918fa513049d72d73b8650d46517718e3cccc42070906bc6120022044959fdbe5d261395a161e03e244c77352f804e8b92fe7a98769b7cefca0b6a5
 . . . . [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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