www.rotier.jp

Issued by R3

About this certificate

This digital certificate with serial number 03:f8:61:a7:b3:b2:3d:74:89:dc:e4:6e:e7:da:66:1f:d5:ae 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=www.rotier.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:f8:61:a7:b3:b2:3d:74:89:dc:e4:6e:e7:da:66:1f:d5:ae
Serial Number (int): 345856690665512942487895422550766740559278
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 40:dc:6c:b9:a5:69:bc:03:a3:70:9a:a9:3b:a2:3c:3a:8b:0e:ec:61
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 71:41:2c:4b:a0:23:4f:ae:91:9a:61:70:96:27:ae:81:fa:8f:85:b8
Fingerprint (sha256): 6c:0f:e3:6f:ff:3c:9a:fb:68:48:4a:dc:1c:d3:56:fa:31:03:1f:24:6a:f7:6d:64:57:8f:9e:19:d2:72:70:78

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

Revocation information

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

Check the revocation status for certificate www.rotier.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.rotier.jp

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

rotier.jp
www.rotier.jp

Other certificates including the domain name rotier.jp

(limited to 100 certificates)
school.rotier.jp
school.rotier.jp
www.rotier.jp
rotier.jp
school.rotier.jp
www.rotier.jp
school.rotier.jp
school.rotier.jp
school.rotier.jp
school.rotier.jp
school.rotier.jp
school.rotier.jp
www.rotier.jp
school.rotier.jp
www.rotier.jp
www.rotier.jp
school.rotier.jp
school.rotier.jp
school.rotier.jp
school.rotier.jp
rotier.jp
school.rotier.jp
www.rotier.jp

Certificate

The complete raw certificate details for www.rotier.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA82pX0kLEYLC0eAGgpIbo
DVD4xsSixcsIXeCnKwJn5yxOCMDhKCqiRbZiB5ikNrbAiy3A7ZVjQLx/LGNyZQoC
9IFjcomfxVyVN6GMzua9bGiS0S4n7iq6XuYBT+PPYUTEl+AQukAoS1+dX3LJTLg+
B0mPV7Dk/nfiPQ8aN8ESH8I4ZZjmfndHmYBjj1Q/pXiH5iweIHv4SriTxQzyGfAJ
HNJCrCcIvbFZiDgrWm7jAEdaixgWUntmL6olBQijQOIOyMtTjRQfqT4m6/irPPIR
ZZ3zXzA4N7PktmZIvtrrceMo3oyemxO5fROUODoLIcfIdJ3fYS7qGXWrLPBiU+kx
fwIDAQAB
-----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 345856690665512942487895422550766740559278
 . . . . . . . . [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 2024-01-03 06:24:35 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-02 06:24:34 +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 'www.rotier.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 (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 30728347820185476726929938455399940594092051867995762963106705243915659048651611399731363169488922291100004258572682343766148599747255596972923497174399900578607436613380224783429783487769413725563210460825466335272607466619373337872493574907362957844170428641271524782138195712505644508677185508789198927372837099283783428585392556508879641049003947276773690266739744791820838380483940723036375882289709232187640057751316235693281507048372017003532624846085632114792231206481243924862447378282814765726053676424553651233792911243784640694710938269664590821928080558376024165438361035713010840945018736863977493049727
 . . . . . . . . . . . . . . . . . . . . [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)
							40dc6cb9a569bc03a3709aa93ba23c3a8b0eec61
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'rotier.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.rotier.jp'
 . . . . . . . . . . . . . . . . [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)
							00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018cce35b5bb0000040300473045022100e26378ac8aaa827f6b275f2f01ee56463529c7827ac3d42f4fa1232bab91e20d02201c58714c2ebb3662c29af33bd8b1b9be1b012270e78b0f4ac9d4a2c06ece060000750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018cce35b6050000040300463044022031d260c7831c23367d6c88e69d5797f98da28077ebe22737d1053b226b48eefc022004d5430d43b5da7f675fbe9ef1518462dcfb2b172cb11b46051baf4e7faf9f4e
 . . . . [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)
		002a90c46393d9cd67fac78bf23f4893e48fff3d8377889395a5a8e9a39dbf5791b607b688d7cb2a20e0d1b7eba52445e2a8c5562365a6af42ff8d586481f47af75bb79e5bfd4224469054db315782fb48c371c155accc2570046b653103d37f9bdc706d0f19393750a06365591378d77193d9bb34220421e7cbe24788c542d58dc172c553240a34aa0663655d5ddde5446afbb81890686a2be6a7603f6ad343ae8d9a4452a72c97ccc2ae9fd60475d7f1d6de098a05c47f5d2fec7730eba396854d9cdd70b3e3acd8a3807aba2da7a51514b7dffcff3b643972489da98abaec953cea7a708c3e5a45513bdd34e6381e363f0c3a6dcc0b1b5c26386a887f41c8e3