secure.nic.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:2d:e7:4b:e4:69:25:84:93:53:3b:c6:62:2a:fd:e8:67:b0 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=secure.nic.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:2d:e7:4b:e4:69:25:84:93:53:3b:c6:62:2a:fd:e8:67:b0
Serial Number (int): 276957010028733634390309926044052446799792
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 7c:49:e6:57:96:75:2e:62:86:0d:b6:8b:1f:50:6d:61:3a:0d:c4:dc
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 50:a5:23:bb:d4:03:8f:1b:4a:b0:57:60:fa:b5:f4:55:d6:ce:ef:06
Fingerprint (sha256): 10:2e:0b:18:cf:e1:f9:a8:8e:6c:eb:d7:53:b0:41:01:5f:60:76:85:f0:f8:d3:bf:ac:43:50:1a:16:94:cd: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 secure.nic.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for secure.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

secure.nic.cz

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Certificate

The complete raw certificate details for secure.nic.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzE3WmAjmjxo8LX28yxLF
6syodRS87Nk3i3Ft7hDg9uj4/Kim3VsQ8XYCz0zOG2YupS2rPOGGgbPfCTaM1WES
LzzLfynoz+cptEYSc76XgJJtY27pkiSe3+7bW0OHg7wf2VRe68nFN9r6kGIcU16M
jYRx0HfFKY0omBSy8nrNl/8R6x7c/kBLCJZu7WoQ3xREElOh/QBoC1BBf0RwsOs7
hyutWpDkvK2DotDPYUiM9bK5OofVL3EIaMtwOOLl22Ah4jbDXXA8q67tVQWYnRln
lnfv78B0URGpLOVjurWCxX6+pAVhNzfNQFslIg61AJ5cj+S4CTGy9EQvN8xb+Dxh
EANCmJzK2dWYLvEjGm7qEkaK/whN3xf4zJ8YkRjvQ3zPmgv6APSkMUkKKo50ONpm
dlg8Z/Q1shF7W5Y9kCQ+68z6/8bE1sdp7G3axnqEMZv+RHLW10ME/Z57swlfRgHQ
qMfROHkjgkyMORobTxRk4DjXbgCeDixY5PJm4YesYlr4ylPZcN9JdIeNrIwoTP9I
dj7FU2D/vxB4fn9iYet+7j0UMGjAL3JzlJWpO1EIrphcVqV4qIJ+TA7Q+NduqtkS
AqCH4Bqu2S+AlvzQg5r9GX6eQSWPhOxjsNsmESt998Ma5ty06I4T5dElUFW4a4Wx
ebcMJaWdUZSDhD2mrKSUj18CAwEAAQ==
-----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 276957010028733634390309926044052446799792
 . . . . . . . . [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 2017-08-03 13:03:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-11-01 13:03:00 +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 'secure.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 833487828879739050601894366014851740173616370795394761818969459714132440197944807527557322405112195471787676556656629753400358166703603450944293939891899759736744647812320566427610722689286734940979596396988334199870654487926136236320757749127945767173649021998622699036179705351442405628172445928137948456344909457230184909060183577256373455616078199923677033375969942278153834237850357360100862133651537842075596453989163800259525813807625286321108866518950279560234841234637743548367577115062796766620071887925199344513914470713401706447407048011220694357484284265457185458315572674111038555707705116769984274547787143060163470063327614373633343395230760125983332528730611773676191301413942143695393982857862847142915393218049465091397597011707058434512608105729928770341342824947657079247478975491874529360245454037827333846056171844000669231430575811627344685083752067586447359914531525258360443808343005309840715878552611480293468170152255083251649380820706499871938164487604636932341009302507230132178113547764797761719320253921263754882243242271354585276254261466457714112587353835996342665308856689509372155799325873745212265563029498187255682838740297446143289660379225945587374590712063163605737651666854030852362809413471
 . . . . . . . . . . . . . . . . . . . . [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)
							7c49e65796752e62860db68b1f506d613a0dc4dc
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'secure.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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