cedrin.edu.pl

Issued by R3

About this certificate

This digital certificate with serial number 03:c5:8a:d6:1e:d5:6b:b8:c2:65:c3:fb:47:f1:b0:36:b4:88 was issued on by Let's Encrypt.

With 3 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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=cedrin.edu.pl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:c5:8a:d6:1e:d5:6b:b8:c2:65:c3:fb:47:f1:b0:36:b4:88
Serial Number (int): 328557029319032887067236177500469317776520
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 10:08:62:25:0b:57:05:4c:02:db:87:b1:8e:3f:1c:57:58:53:93:39
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d7:f8:79:b1:91:c4:18:fc:87:31:94:c3:b2:9b:98:e5:ca:8d:3a:d1
Fingerprint (sha256): b4:20:56:34:3a:c9:f5:1d:a8:a8:88:13:5d:d8:1c:c5:f3:c6:b3:61:5b:70:60:2b:2e:a6:2f:22:fd:cd:56:5b

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

Revocation information

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

Check the revocation status for certificate cedrin.edu.pl

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for cedrin.edu.pl

Public Key Algorithm

RSA

Key Size

2048

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

*.cedrin.edu.pl
*.npdn.cedrin.edu.pl
cedrin.edu.pl

Other certificates including the domain name cedrin.edu.pl

(limited to 100 certificates)
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl
cedrin.edu.pl

Certificate

The complete raw certificate details for cedrin.edu.pl in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnLzoJVW4ABXSKBH5fuDh
w+23ZqTnpWUwmdtEXW16aXrpFCLcpsHH0GlvI5dmm6/7qTET/4pK3KNJ7RAD0qhB
l+sWLXxgjc/rw4AubsM2Yr0VhSuyJNsVpJi1OEc2nKgGsqB/Mn/QKt0meVFWLJDa
0bi0lGVl/zD444LbR/xaKpy9WhDPl4QBzYmCuFaB61oeIwQ1jzuJO0vC27fIQVwQ
wJ34O5rR40dhzB3PgCvQrh2f2GWJ+Wo89tE8zYvBtILCHAiC3yKLtwN6jXoFevzQ
e5J88rXjOZW4R3k52OeCcpiQz0MsPC1hAM/e3xG4ClchLBwCw4yDRRGHXLN3b7qP
1wIDAQAB
-----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 328557029319032887067236177500469317776520
 . . . . . . . . [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 2024-03-24 19:07:31 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-22 19:07:30 +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 'cedrin.edu.pl'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 19786328999367221054125191107371431055931190155317506389926774548764815623891221326956937318385220341786373080881068850917857196185812399031360319277348622869380643204632896280106147813573260923818037990623963530429486142328549371389834725923691166258322426704251820301594425168594326348305894240390272877701391114593345533274402445953103691184571086819566438016922646635954582896915697880269492407031522388627560329809174770912329378445143801544744099207969027835522173949763655645893692334773190606377829722967247299931601625628282133111698213068005952128730337354514947176728298046675904742483349801222174320267223
 . . . . . . . . . . . . . . . . . . . . [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)
							100862250b57054c02db87b18e3f1c5758539339
 . . . . . . . . . . . . . . . . [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 (56 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.cedrin.edu.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.npdn.cedrin.edu.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cedrin.edu.pl'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018e72134c770000040300473045022100faf775b9f8989a0103d8dd8804637d554a3dd58c1897dee6173c8213560cc3060220627fa28737f04dd026c7666a9badfa930d9423c548af02c2a4d03e2a22a6b8b1007700a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018e7213546e00000403004830460221009aad65776e804d88d1474c8999dc429bfce28cdedb661237a917d56852697dce022100dfbfc52300dc9f9cfa41f5213a917d2eb0db401bcf00ec39c316a540bceb7cb9
 . . . . [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)
		00ace0c6a46be30cdf77f01f5f425d2306fa12cd25708b13cb26b6738452694381f58877c68ac15a4055a8ca1d743641ed8f6d0d25f843c1f09331e27a661716afd2124bcda948fdb15fcd9bdbe65f0e24bcb0232e5637be59090470ac274bf11269667390ab6ac8a9347068fd3b73a0e10c2c773045aaaeb823ee369f312a6437121adc13fe75a277e8c52a56913706bd2a666405ab4903777662d038b97e830089a84e8ec551cd5d5905775895b21d59d0f5fcc13b7a1d87331ba3ade9618d07611f751421897039d254336e9d3e6a70f5874541b6425446593975b7979aa386f1004e3b10993c2102dcd1a8b79ab6cf8ec1744a7525a934c640afbbc6c19ecc