api.nic.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:4a:65:c2:92:a2:77:ec:d3:96:a5:50:c4:c4:2f:8d:9a:fb 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=api.nic.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:4a:65:c2:92:a2:77:ec:d3:96:a5:50:c4:c4:2f:8d:9a:fb
Serial Number (int): 286653015254698897978199764322954163100411
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b4:77:4c:88:14:f6:19:45:d9:c1:79:9f:ae:12:60:fa:be:3d:c3:4f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 3c:fd:0e:92:f2:99:c4:f2:94:59:9b:d3:e0:a6:24:8b:8c:c6:86:af
Fingerprint (sha256): 12:a4:ee:f5:55:55:4a:52:f0:93:e5:ca:eb:9c:35:0b:53:d4:10:de:e5:3b:df:0e:2d:0f:b0:fb:53:7e:ab:1e

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 api.nic.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for api.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

api.nic.cz

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Certificate

The complete raw certificate details for api.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 286653015254698897978199764322954163100411
 . . . . . . . . [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 2019-11-11 08:00:26 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-09 08:00:26 +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 'api.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 669946326271397393586287175414570179625769277640650406178999240599463460516352883321616805603199738914184831482781003857480425110308744827154357926786414230215951229399305082017423248159643202449184029623311714491247473877035632442445833045503406151459750911468382333670061440157923632244311944291776656424247946453220088738290898918434702749548671222236863335633684817371357365320354773679485147607269214797994488106767604357863421871627444760030587445964504311484343563221658653978987662863716212196073680836256813783325778452387222452994475753624099646857365460908626273459062283632416281933931710743185523617687043338345949819885792587836610308036762705511597276190703363270357623888789394380870141426053472162464593205077817494128216277787847629928063224621322859549047117414283314764357357158368005873149638806241652474001945937936242487586916145219008164392160110846071557206730248206541413865837396984993777443706521992185185716311295784261260255955830200101792688140451307327309828757452178276690421676440732149463785749807806046264461764603810796348098293642857374833772606299858895583147186736442856468809835790858093510900181147327547987272139041997453437962638224914992408525512152272785929964893277144499810534943893381
 . . . . . . . . . . . . . . . . . . . . [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)
							b4774c8814f61945d9c1799fae1260fabe3dc34f
 . . . . . . . . . . . . . . . . [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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'api.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 (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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016e59b15ed5000004030046304402204c1b2d590bf840c5e91d23a7e872d78dc5a998ec6fde96f42f5505c82e618de802205656a779ca3a1518083ff3c08cd11b7bd69ef9f03c4b29d36ee9c9d3616a3e8c00770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016e59b15ef50000040300483046022100e684e542968ea881036d8d95fde4858158820201a68fc20c05469ada8c3b3dc6022100ddff564ab2d8d5cbc67493e76227749b851919328654f799c0f876fa7376ec81
 . . . . [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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