intro.nm.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:d7:3f:f9:d8:6c:93:02:07:3e:e0:47:eb:6f:99:ab:31:f4 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=intro.nm.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:d7:3f:f9:d8:6c:93:02:07:3e:e0:47:eb:6f:99:ab:31:f4
Serial Number (int): 421694891250297593792006744190724271190516
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 56:37:a4:42:b1:9d:c5:f5:ed:03:85:ba:55:6f:47:28:74:9b:b0:a2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 13:aa:b2:90:6a:57:3e:ac:25:f5:46:be:fa:68:16:ce:a4:46:3f:5e
Fingerprint (sha256): 0f:18:34:10:0d:64:c8:1c:19:a7:de:e0:53:5d:a6:fa:e2:17:27:2f:aa:8b:5f:35:e1:6e:6f:95:42:db:8e:9e

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate intro.nm.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for intro.nm.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

intro.nm.cz

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kanesh.nm.cz
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mad.opac.nm.cz
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antonindvorak.nm.cz
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Certificate

The complete raw certificate details for intro.nm.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 421694891250297593792006744190724271190516
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-01-25 01:02:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-04-25 01:02:56 +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 'intro.nm.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 752075764789100326270469108294438786404637378528829982119172503482966973475650102311720460018689037543207643147271341949657295106534189527400446160449249347059804534105116930701139094830536241793864174526880761066718575106357166564696120896261245398168123144909209672927460570013970801957912645188241811858170624012218583491587604820193296582720755443664093972487429038131873792716013760262887029796714562980931542805540102726994901236189368607882327229095115309659874917182869795204382163754398603540084598538698319586058935942622390547978277336462794216852877176273067305006636026688218685567990366573243307214010613841121141599215114735136009716976836215569222732281468439678941399328715707171699125093058844637837503266267118647642136145518298742240874537717126405440829471273145946862534582776286342750935032490202497908761855051941253204320529725425917520243255114121456399634242923010244716365508079513109746609089559536436011400375344896195242286704972605088800181764585569711348088747891493603667359508868925938668835955318864355954290676379735120389400359309167779460168011377975918516158198459390412682627808414427947302812392162172908719398565534913681732198535720415248799905546414886685148482527270423785235338354552543
 . . . . . . . . . . . . . . . . . . . . [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)
							5637a442b19dc5f5ed0385ba556f4728749bb0a2
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 'intro.nm.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000185e6a9fa92000004030046304402207619c60cced00f59c4c5027527a21b8b72e84f5c93f36f5eb0da10cc62de0a6f0220403160cbbcf83ec33b8c6d8559fe86fe5dd4b1d21ac973b0593cbef93a80ed25007600e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e00000185e6a9fa6b000004030047304502207da0b01a69ee95794c817a808c01917ee369b99f80a95c37c751ffa920445369022100b1ec54a2d371e7ee42427cf47448e58a3ce5e99584665d2bc0f1de8524ed10dc
 . . . . [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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