performia.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:17:67:7b:67:ec:31:01:d3:dc:12:0a:2b:de:69:15:bf:a4 was issued on by Let's Encrypt.

With 2 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=performia.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:17:67:7b:67:ec:31:01:d3:dc:12:0a:2b:de:69:15:bf:a4
Serial Number (int): 269300903478342973222611130199813905563556
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 85:8f:b2:ce:51:42:32:c3:2f:25:61:be:d0:9e:09:86:8c:ff:9a:66
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): db:df:9b:75:6a:ec:1d:f1:ae:72:16:a4:dc:fd:8d:0b:29:04:29:f3
Fingerprint (sha256): db:e6:eb:cd:f2:00:2d:d1:b6:ab:e8:16:1d:9b:a0:19:b1:8b:e8:bc:9b:db:62:24:b3:e5:f1:c2:c7:6f:be:48

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 performia.net

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for performia.net

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

performia.net
www.performia.net

Other certificates including the domain name performia.net

(limited to 100 certificates)

Certificate

The complete raw certificate details for performia.net 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 269300903478342973222611130199813905563556
 . . . . . . . . [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 2020-02-25 01:00:58 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-25 01:00:58 +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 'performia.net'
 . . . . . . . . [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 921438228302898066826778517494344127769146900748757154848589300895720481237303010887455707596810534790359994037430332033481028709300965029274944171693728105361285186123549192997335259153442586839699621380864412429462919043910814038453698568202670641929054597323062606086258766708712015560537012373057402598391370193663648428442477084418778226388611196871930111535346879938946318181546326571458824515481053954912588282237696456743458438149135144958144056414732855363055327014788033659882202746276915326481361164411919679088093960649431985510458762511724208898903195294056782537420651538194298947924465777081847585951293158563660582609480018979367938808959977839798791120180875359755710721422824028178627020988876440094606278489274428244421231744026994815723755477290732608603281706005199736339479667236886118096189687767787868780623965422331034346188117783553948662777377872321883520346243150130592273090381400647663615242431244690140990207476057537499986892460067684727119234293002790821760305686534972631304088487399158664385436692174927288038556994118710213535081963933385234404667682382808636490347509561054533010391905468920194568907321982801762234333322303200964771077944492890130140143013906844772539744616227500327814345472881
 . . . . . . . . . . . . . . . . . . . . [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)
							858fb2ce514232c32f2561bed09e09868cff9a66
 . . . . . . . . . . . . . . . . [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 (36 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'performia.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.performia.net'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e000001707a136d200000040300473045022100f33179e33984603d82208fb4ef9a3c5c5c5e9e5242b713989154b121f0738fd902200c883d47006ebd9c17029408f37d40247a3a8b720a2fe6d31eb195c2ef528b1c00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001707a136d4b000004030047304502203b1faa72f1784af247299567c4db78f0ea944849158d4249876d7b3710383c43022100b62a238139ef9e6162637802e508e33f82cb0c86d03447d2e9696719c83a9b30
 . . . . [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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