flor-tsukuba.jp

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:ff:55:9c:f4:07:7e:b1:3b:9d:08:cf:6e:95:c3:13:d7:0d 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=flor-tsukuba.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ff:55:9c:f4:07:7e:b1:3b:9d:08:cf:6e:95:c3:13:d7:0d
Serial Number (int): 348222660687573447206570488991100886570765
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 5f:a3:0e:81:69:17:2b:41:45:b2:79:88:4d:ae:e9:82:97:ba:9a:9f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 48:72:d0:5e:bc:10:81:6c:e4:12:66:26:58:fb:e3:93:d7:e2:ea:d1
Fingerprint (sha256): 28:24:61:19:00:cf:b3:c4:25:b6:01:ea:51:81:eb:88:4c:c6:d6:21:c7:e1:be:69:c5:e2:50:53:01:b5:d3:e8

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate flor-tsukuba.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for flor-tsukuba.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

flor-tsukuba.jp
www.flor-tsukuba.jp

Other certificates including the domain name flor-tsukuba.jp

(limited to 100 certificates)
flor-tsukuba.jp
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flor-tsukuba.jp

Certificate

The complete raw certificate details for flor-tsukuba.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2zKwstGr7StEEuqHA2+h
tnfoR6vfO7LA8Yvsx8HYCCLzE/Do3NZ032GP1Fs0TlLxGfDyBmiIGsoYm39RNswm
CNuzICNvmCx9SZA6oLo9yh8OnmS8AncyJ7dJIzM2M75fyhuZ4KOtcEUyt0QNcqR6
I0/9fKqGwD2h5cIYzUC5RmMN/QNSCQIJPmW2ve99qMG8DjW6lNY5lfoeHETmocgO
6y0GMuPsf7AQ/9kvG5B/dbctl/emJS1sOK4gdGdbUVKHkBaH1NAI22WZYYiIyw+0
SgBVH5jjqpL7/WLp6WR1bKrh9aw1hIcCNW71bvGUHKy5ndRbQyHq2Lh78aacLPxK
6wIDAQAB
-----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 348222660687573447206570488991100886570765
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-30 19:06:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-28 19:06:34 +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 'flor-tsukuba.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 27671185070894926141413924356736610941305925528341825177113754218313607389840087580805261469876020191360408060295988916552575883978110393782094034768202406703947190715389157348670314378525986520079191616393167831162163770339205342648556588238526355036250318003439851231048911058747583669265576054281007454096765142992212259556162299881562669013816330026581657560793232627047057274080542991551291845586263863090731504680697210118932506727281240613624537393137123026600574837106371310245270411827868591855959133625148564296410516913581907897513799190786963370140317630210030837004743037084199419268345510310098404920043
 . . . . . . . . . . . . . . . . . . . . [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)
							5fa30e8169172b4145b279884daee98297ba9a9f
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'flor-tsukuba.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.flor-tsukuba.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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016ba9ff11dc0000040300483046022100aa82d6fa82d46f5a4bfb35e529fa2018095d06df69d25aa70ab498bd62277d5b022100b01c29a30fa20dc03ada6604ad531986330ae7d521904067f792ccb046aff91c007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016ba9ff13ac000004030047304502210089dc30f5483aae575731ad8ec1067216797458d290b4335b45430edf1afedb1202200cee07e07f6f51174b606700070f95dde1f82f86b29e22c2d079d402227259e5
 . . . . [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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