rdap.nic.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:46:ed:94:da:ef:30:8a:e0:07:19:f7:f8:ad:46:14:87:79 was issued on by Let's Encrypt.

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=rdap.nic.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:46:ed:94:da:ef:30:8a:e0:07:19:f7:f8:ad:46:14:87:79
Serial Number (int): 285472423415198368205824096910957390104441
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 36:5f:77:bd:de:5e:d8:9f:1a:12:33:cc:fc:82:92:7f:a3:b0:70:38
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 0b:7a:c6:59:52:be:8c:79:a7:d1:ac:dd:05:51:f0:86:62:af:ce:8d
Fingerprint (sha256): 06:25:a0:98:43:f0:36:d5:39:55:8e:15:9c:f1:76:b6:7c:78:ec:7f:1c:ca:7d:7e:7c:ce:0c:40:34:7a:92:56

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 rdap.nic.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for rdap.nic.cz

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

rdap.nic.cz

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Certificate

The complete raw certificate details for rdap.nic.cz 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 285472423415198368205824096910957390104441
 . . . . . . . . [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 2016-12-14 09:14:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-03-14 09:14:00 +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 'rdap.nic.cz'
 . . . . . . . . [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 743535616520382504320108455799797701838390775299503073138825303370743468176620014069005770188586707020334469216292840513838738672676530606712336071923741516898678918075739213167359414058652566439216459345684476233607487659952598601615010043862569193533390792813024567479343988787949379944774590596398401648665403758834007836579716304889501545001615349282996736670829271711648057038609052465544208325080940011516933406070811041617606634998489141978428056020418871157764565780179978484062951061374234353503551721107574424874755056618600922005376579888094476803218434969243591578377340384292802588571422298148055950243544138177490643736708402530736659129149516755720031138963354820453600842031389960549563878290448226308306482380407367730135888080012931574495008631277067286154535234134230703340517547750519569251263930183730457917189292259427826020189885453464460369623646003445757679668127726802202131303818090565901696531165222249045561044441156830547428606699251091109838379540376242773710233197030449151713850720993089616435933732468781521449432083271004200053272535506599068277329934425715532434882252699733949471605043294868317754852052029013417416465589727768034512017336171542368630418480998638047761323685962240144760719952699
 . . . . . . . . . . . . . . . . . . . . [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)
							365f77bdde5ed89f1a1233ccfc82927fa3b07038
 . . . . . . . . . . . . . . . . [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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'rdap.nic.cz'
 . . . . . . . . . . . . . . . . [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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