www.autostoppisti.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:fb:71:68:88:bf:40:bf:6f:52:70:96:9c:88:e6:8c:e4:cf 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=www.autostoppisti.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:fb:71:68:88:bf:40:bf:6f:52:70:96:9c:88:e6:8c:e4:cf
Serial Number (int): 434010763360153847639529325917163565671631
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 37:aa:fe:a2:58:53:f9:62:60:b1:6a:7e:c2:b9:31:c2:d6:f2:a8:3a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 65:00:44:2a:6c:8c:e8:07:d5:8b:36:f3:9b:08:d6:25:d9:a9:d6:c0
Fingerprint (sha256): 44:42:f9:39:b5:d3:0f:3e:cd:9d:ea:4c:72:2d:c6:1c:eb:3b:30:1f:81:6e:e2:83:69:f7:0d:d6:9e:bb:65:49

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 www.autostoppisti.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.autostoppisti.com

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

www.autostoppisti.com

Other certificates including the domain name autostoppisti.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.autostoppisti.com 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 434010763360153847639529325917163565671631
 . . . . . . . . [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 2019-12-04 04:01:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-03 04:01:54 +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 'www.autostoppisti.com'
 . . . . . . . . [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 864668341433075799832033122605880035221278964455302526863401561994002709722363541981101448787109777366660104706877465553112511820043314829752266558958787269128140567750719830454835485290165267212183266078907918707291885910656203198123984461382227726302027008392520826131510283427000155945509755788057172736386734003081901435951000118095086678432473793418472641041403198443148174146187365114265855282037977399337916353393870311385245339728915136355961067855429619381710309707470153969360269399617878528618083621970120128475192743658834008920291284370537798134150813218403238974397921875129052747696054445246251674901438116738060835317997984146983213674570518041446736461522335429317532819132836627406060923983221279539485086505529782661403174249812738431570755600446360249117467754447307504462942750223687397917854300222572148200172118790953827045668889204477148222155704580546886373925753728640482160276957131541520376808768439926736751461058750553617924003188115954925537797740176830701243212673670390816086405753148252476776584872731862670920906737487817783878404677996976840705277687583033649746871153968721918523311647803115605247005449242964353849829962886750804581330136771508910484937917673470951826666260575865888969805125701
 . . . . . . . . . . . . . . . . . . . . [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)
							37aafea25853f96260b16a7ec2b931c2d6f2a83a
 . . . . . . . . . . . . . . . . [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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.autostoppisti.com'
 . . . . . . . . . . . . . . . . [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)
							00f1007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016ecf4941010000040300483046022100d4ae4979e653e6a457e2e354154da28727843abebcdf18ccecabb304e6cc76a7022100a5e87c679cf0a6098fcbf4468e9398f57d614adc693c7ee640364f69e926508e00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ecf494123000004030047304502203f40f8022ca799292d3190bd04c48ddad840266ee706c45522c5f689e29ca8f7022100b1e22f9b7e8e1255153b9ab5bc5413d456b7c67e5290c1e5cd00eb05be637f1b
 . . . . [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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