flor-tsukuba.jp

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:31:e6:3d:be:14:5d:16:4c:fd:b8:da:7a:ff:be:b1:c5:c4 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): 03:31:e6:3d:be:14:5d:16:4c:fd:b8:da:7a:ff:be:b1:c5:c4
Serial Number (int): 278316736798816822934794553213805350995396
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 7f:0b:91:3f:5a:cf:10:88:c2:7c:9c:ae:b8:ba:c5:6c:22:27:15:16
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 05:a2:1d:12:25:17:43:ed:0f:e7:bc:fb:42:c3:c7:c7:17:89:c4:75
Fingerprint (sha256): 8c:03:ff:2c:b7:84:b7:27:5c:36:8f:2b:f2:7f:17:83:b7:34:bd:8b:63:1b:20:d1:a2:57:46:44:5e:01:e6:48

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
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
flor-tsukuba.jp
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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuCD8SQ5bch60aqLQU3t/
IMjvvbXZbGnJzMl2vzIvTgHySwmJbl2B0fglzlM3X+Jt3Y1pvOLke/1wVBqyd1ii
3ethaxA4F/SHDejgb/rwE8AOQxg3GUSQkAzU856qu740dlrxAIwMxpmjbqvzNmlm
I6J0yo5EpY7CgNPfNSe3ys3BB/enTd7pbL5b51IDOuphw8w+awyQWoi0B+VEJIGS
XqJm7Nn5Ys35UpbysnEA4tGdUPDaagE+alfYxmNTmlDHRUO4lZoxKHMHBs/k3C3s
Hdnt2CKpbzr2J28Q84KAL8MlxlbOs2otU0hSOYhrhudDJG2OBkG3Wyk0rSemOeJV
RQIDAQAB
-----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 278316736798816822934794553213805350995396
 . . . . . . . . [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 2019-01-31 19:08:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-01 19:08:40 +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 23244113864982059057229749799265587330712186422567416153924033420553198133020467101999150940963441964488393624522006012593323094523337292161675381355083814633236353643345312597959893762068825775335896862926676485017223062236016710849794257958287500036185506181897776732455207903195177997160076241330048182067469765190975504819499227476708958561774468494710545263664957460008877130421452033453330581110751168254248136397048754569062927413259055965797126555508822686426889301806136773017650436155732845576669007724033538474705923960394903694083305550319506263936069373236972615157677491827835151586179577125454959760709
 . . . . . . . . . . . . . . . . . . . . [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)
							7f0b913f5acf1088c27c9caeb8bac56c22271516
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc5600000168a587185c0000040300473045022009c3b7b4dc66d435d3c6ec9c31c1907553c525dce266c5e3469dd0f0f5fbda5f02210085556798544fcb3e3f66219e199e0d962b0f3c54e504c1c7342cc409897ddbcf007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000168a5871a4e000004030046304402204d152cc85a91a43204d1187f1de58a4680bd44ec88117009e3039cbbdb3f9d7102203f854736df991ab098027055c29b2229a475fb336c497e76c1ac4e362efdb85b
 . . . . [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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