sokolowska.edu.pl

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:a4:fb:99:6d:d4:0b:ef:c0:05:37:70:93:43:07:0a:d0:a0 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=sokolowska.edu.pl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:a4:fb:99:6d:d4:0b:ef:c0:05:37:70:93:43:07:0a:d0:a0
Serial Number (int): 404589884778018975733440686125345804046496
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 3a:63:f5:75:69:94:98:2e:5e:25:25:9b:8c:b5:e6:88:5f:9b:dd:9e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 83:f9:f7:26:ea:dd:8d:d9:85:31:fa:47:18:0b:82:38:ce:a1:76:a8
Fingerprint (sha256): 80:8b:cd:97:cc:95:18:cc:d8:c5:72:4e:a3:67:73:c8:12:32:ba:84:91:c4:15:83:4a:cc:ea:2f:57:25:4f:db

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 sokolowska.edu.pl

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for sokolowska.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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

mail.sokolowska.edu.pl
sokolowska.edu.pl
www.sokolowska.edu.pl

Other certificates including the domain name sokolowska.edu.pl

(limited to 100 certificates)
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
katarzyna.sokolowska.edu.pl
sokolowska.edu.pl
sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
sokolowska.socrel.zxy.me
sokolowska.edu.pl
sokolowska.edu.pl
katarzyna.sokolowska.edu.pl
sokolowska.minotaur.kylos.pl
sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
apetyt.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
katarzyna.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
sokolowska.edu.pl
sokolowska.socrel.zxy.me
sokolowska.minotaur.kylos.pl
kritikos.pl
apetyt.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
apetyt.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
sokolowska.edu.pl
sokolowska.edu.pl
apetyt.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
apetyt.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
apetyt.sokolowska.edu.pl
katarzyna.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
apetyt.sokolowska.edu.pl
sokolowska.edu.pl
apetyt.sokolowska.edu.pl

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAubXgg1Y59XZns7S6uz2J
6oPaOYSHgVOx3dTWy0uh2s++W9+UBjPtEY8Nv049NhC9BdFr8Zlkc0YeQq8ZDIwk
iwjJOsrMJkMDvKS66VCyof3MEXKEsNV+S0tGVGtI5DnEoGjIhyq3oVNr5NT7Dk88
dvdy2cZ7tLLbyfN2HwNjKbFSqE65KLmmVALXacuaUMo/ekYvIjyQyLXKSF6RN9J3
riz6D2BRhcZ8Hlm6W+orzg8XRG08Mv3X/Ltek0RjJ1c/WuHTQljIy0dBXla1IAa2
X/aLl3gZpZlS45/6OdV829YhWREbRY+s0XSIxiz1pDrL6cmxrz0WQtoxGnCL7QUG
IQIDAQAB
-----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 404589884778018975733440686125345804046496
 . . . . . . . . [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 2018-03-29 02:07:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-06-27 02:07:33 +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 'sokolowska.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 23443773312089686199889140420164632428064523031113498778638801333422946747869999731766310208096361397252737563151013267802542191395639726782780566911194612986064811232460528004975647973105679260754052112737502828390284951453919686921290754147996851484746344259900755569164776042969338256713003888935649273501265424844028987051847020706022544771979297720830028166854646729430889955168479695379861225964754888433842074212835745694394066547143842231554231615630042510493119253707273396745243665215435660281297722526020441128741861478429204266581728419754268919588083175586867321323623110151898782489055499893568650413601
 . . . . . . . . . . . . . . . . . . . . [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)
							3a63f5756994982e5e25259b8cb5e6885f9bdd9e
 . . . . . . . . . . . . . . . . [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 (68 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.sokolowska.edu.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sokolowska.edu.pl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.sokolowska.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 (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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