frs.gov.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:9b:87:f4:b2:a0:76:a6:02:9f:08:0a:95:df:99:6b:08:7b was issued on by Let's Encrypt.

With 3 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=frs.gov.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:9b:87:f4:b2:a0:76:a6:02:9f:08:0a:95:df:99:6b:08:7b
Serial Number (int): 314261340990872783294981086991643285588091
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 9d:64:f9:77:e5:c8:c6:32:3d:69:5c:f4:3f:65:70:b3:71:7c:bd:f9
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c4:6a:70:b1:66:71:fa:f2:40:c0:43:aa:cf:11:91:5c:16:e2:dc:ca
Fingerprint (sha256): 09:48:aa:f9:f7:23:ad:e9:e5:69:ed:c6:9a:02:bf:0f:de:ae:32:62:93:29:c2:7b:2e:11:57:b5:be:97:4e:80

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

Revocation information

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

Check the revocation status for certificate frs.gov.cz

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for frs.gov.cz

Public Key Algorithm

ECDSA

Key Size

256

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature

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

frs.gov.cz
prod.frs.gov.cz
www.frs.gov.cz

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ext-mattermost.nic.cz
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admin.gov.cz
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covid.gov.cz
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archi.gov.cz
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museion.kraj-jihocesky.gov.cz
prod.frs.gov.cz
tsl.gov.cz
isnipi.gov.cz
testrs.gov.cz
vea801.gov.cz
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www.snsu.cz
tsl.gov.cz
uohs.cz
registrace.udh.gov.cz
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vyzkum.gov.cz
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biap1t.ros-iais.egon.gov.cz
viap1p.ros-iais.egon.gov.cz
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mk.gov.cz
isdv.upv.gov.cz

Certificate

The complete raw certificate details for frs.gov.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEeHNCKbQP0K8tss7LQAKP0cwFHe1o
I+7p9eGuqABOnhz4umrtNqfLIwdJRQXxU0FVEPbpHrzQ39Rq3bpndIHdRA==
-----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 314261340990872783294981086991643285588091
 . . . . . . . . [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 2023-10-13 23:09:21 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-11 23:09:20 +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 'frs.gov.cz'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits)
				000478734229b40fd0af2db2cecb40028fd1cc051ded6823eee9f5e1aea8004e9e1cf8ba6aed36a7cb2307494505f153415510f6e91ebcd0dfd46addba677481dd44
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							9d64f977e5c8c6323d695cf43f6570b3717cbdf9
 . . . . . . . . . . . . . . . . [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 (47 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'frs.gov.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'prod.frs.gov.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.frs.gov.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b2b8422f80000040300483046022100a2ed9a76327ad4040006e63023d65f3303d3b5f55a2db0cc7fdc14a360c6d647022100f0a1fa81368e45e3961f03c03eb172587baab4ae180f0d69f4e44b4535dcd2da00750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018b2b8423290000040300463044022025429972e298c62297e5f599604f42408d873922ab36a3d42cf891d5d41d4e5802205072b20909390d0bd0ee1cbcfb16c55ab505d89ecc0f226bf99e8e4c19ce1c86
 . . . . [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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