www.brl.ntt.co.jp

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:6c:89:eb:99:95:cc:51:29:42:ed:08:8b:9f:4d:f8:bc:80 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=www.brl.ntt.co.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:6c:89:eb:99:95:cc:51:29:42:ed:08:8b:9f:4d:f8:bc:80
Serial Number (int): 298270680963003281786174177650098640043136
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 3a:5b:16:3d:52:ce:a3:b8:47:db:18:76:50:58:51:7d:a0:3e:90:2a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): fe:55:15:4c:97:25:3b:e7:21:82:80:eb:f8:c6:3f:e4:30:8e:54:2d
Fingerprint (sha256): 5e:49:fc:1d:e5:44:26:b7:f2:b9:1a:63:cc:fc:83:25:c0:c4:6c:41:7a:7a:68:b7:67:11:50:e9:83:61:29:4b

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 www.brl.ntt.co.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.brl.ntt.co.jp

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

jt6ks.x.incapdns.net
www.brl.ntt.co.jp

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www.ntt.co.jp

Certificate

The complete raw certificate details for www.brl.ntt.co.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 298270680963003281786174177650098640043136
 . . . . . . . . [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 2016-09-12 08:48:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-12-11 08:48:00 +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.brl.ntt.co.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 970447025836145067579660650909474673005024496073665311414943190043018950240326674798704400583181513293411911290486437349607019158473609090297512894272327781321661895858336865092404920823727009386420061425122939994893251747861166474050915863334664509354591906842348461636401205617507168814820921700559819513504305059766524511389885673274021281730990955172267724563139801720834144443136962627611438280293267051858597474582860660460305997664426777137315735175668844343963101456890335093932801106886277144545196905545795030290745442556575229822826063979842726184636822581999277054924151141849752727224702670144529726564498999576953084974914570078591662204944622946365459403247605917401059791151943726534705260098334687850835672217557466341598534075063958594716197564138035350075743497822379535856642056185604604836607597430178791439055264993562738377272630232737118313257186697219217840256429684368268481210777645689630209584688441322714515894762637233359850337378539842730075674041867864517175464980059984718699782812591658196074465390987075396460357972258714955987051459791617460676156681719521447166541629270286548549199901672469647643715616623940852707641261615439834994501891978257567933132519657429283889027819801464706394658577591
 . . . . . . . . . . . . . . . . . . . . [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)
							3a5b163d52cea3b847db18765058517da03e902a
 . . . . . . . . . . . . . . . . [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 (100 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 (43 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'jt6ks.x.incapdns.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.brl.ntt.co.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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