poczta.tuf.pl

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:81:c2:0b:45:d2:57:80:6e:63:b1:c5:53:75:5b:7a:f2:c8 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=poczta.tuf.pl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:81:c2:0b:45:d2:57:80:6e:63:b1:c5:53:75:5b:7a:f2:c8
Serial Number (int): 305491211890680776528713763627404936016584
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: c3:0e:66:ba:51:cc:74:96:43:32:54:9d:62:d7:ee:2a:e6:a1:c9:f0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a2:d7:66:10:66:20:a1:a3:f0:0d:42:25:a5:a7:1e:56:90:16:0a:6d
Fingerprint (sha256): e7:9d:b3:4b:5e:d4:4c:b4:d0:d1:f8:98:d0:46:71:9c:24:ef:e5:db:a9:e4:29:1b:fe:5e:b5:a2:b7:31:b1:61

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 poczta.tuf.pl

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for poczta.tuf.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

poczta.tuf.pl

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Certificate

The complete raw certificate details for poczta.tuf.pl in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs+L+gKFPftwo2fPpg0J+
UPqZ8WtIRXLgCk19usU/0SSWTXgnWbTNw2+ocl7601hqsWNQTNhHP06WhpJLmcTI
OYCRwncNRCujI2ADsOZniNOPw6BDyFOejngsqihDtoKAyqLRpVDsW2saar+eN6sZ
cJnIxPPpJgkIAUJirxkFHayRtkZrMMA9BMnU7v90Z+lanM+EHSgVGVYaePBCiMIq
VPwVt2DafTx46KV8/oAB15P/kH51CimKYBEPBLCi7kt97mBHermaMQPqV6aWIRmQ
q6cLm5r5tc16yeu5Od3NT1dtqVtBr18NNJ9gzPn0qrYHOyNsM18y0csjJ0Gftih/
uQIDAQAB
-----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 305491211890680776528713763627404936016584
 . . . . . . . . [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 2019-04-24 07:47:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-23 07:47:00 +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 'poczta.tuf.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 22708591576281877654451298887192733782335368900316987916235247120622202810193055081894252666402921827892208795372755856818194448003312046875448031870948656394819990532101457226455443682551385401547852122180072312249307339909091739852393336228806519183330797848117084029394532981300567408453832636286862652361360139997431796404187585555908590873404538674058942938653502263021613454445004589505786092467227779595668076434014624908277372430009205708206957508053944191429851676315941310414334772565350711354844507715264615322376486726999432562098197939348608808808246485611702500722593519597330198242049031340777447915449
 . . . . . . . . . . . . . . . . . . . . [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)
							c30e66ba51cc74964332549d62d7ee2ae6a1c9f0
 . . . . . . . . . . . . . . . . [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 'poczta.tuf.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 (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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016a4e86d53200000403004830460221009e369500a7d69cce85d6b0f6eb38ecc63c9e1f8e73d2f950dd18062a763ddf5302210096413e7a434d20f8df6892c5eeb4da15d7a4a6f4bc461393306bded0c3b72e8e007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016a4e86d53c0000040300473045022100f4d61373584fb7bb833b6d8e6e13ace6992bbb25c0631ab56ae9c844dcdf3d43022012d7128c67c09301d00af10fa9109dd95f3a5eb286e6e1fc52e290ea4ad00af5
 . . . . [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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