www.vastogirardi.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:5e:c7:d4:fe:e2:9a:7b:d5:05:58:24:81:0c:56:bd:1a:60 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.vastogirardi.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:5e:c7:d4:fe:e2:9a:7b:d5:05:58:24:81:0c:56:bd:1a:60
Serial Number (int): 293589022593629577598692991309984118413920
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f1:2a:58:7f:d8:ec:ef:8c:4d:1f:ba:b9:49:8a:7b:0a:55:ab:24:91
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 11:cd:d9:e3:98:61:9c:de:a0:b3:08:7a:5a:8e:5d:1b:ed:95:c1:99
Fingerprint (sha256): e4:96:1b:c0:0b:7b:37:94:ed:5c:39:a2:78:51:8e:e9:0e:ab:e7:4f:74:04:9d:76:26:01:a5:d6:dd:d8:22:1e

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.vastogirardi.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.vastogirardi.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.vastogirardi.com

Other certificates including the domain name vastogirardi.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.vastogirardi.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 293589022593629577598692991309984118413920
 . . . . . . . . [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 2019-08-08 04:01:27 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-06 04:01:27 +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.vastogirardi.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 742443426328170781900824403867980858608246456985564446247777577316300663072672016923907203875890198263946710021960049130017410089227294348261776053801787341974234305238990183293561295524264234442893492711695023033000433978256481525232459165314248260824565307147501190577441254024197292674805151235336425755109276769025120635434672172603031404865016218507325878401014921802462563486869664232194002907129967528777585854883610807055021584239031321398666569003726265793383899529902137853093989641974751089269182388739016813460960127511293303762345272644309953806927010692578717655734297874018836478639669792070095944373405557837097899121607031081620812519974894055991377821202384048987061951390073120290380873032457894598605668285968407163591541287864821175102282188883974352135823882834023795592904924493379815701259615539009218460004773452541609888320957357676561192306666942942480666078024585877678052319933142820913465638232845948597986106428561862963614799025450622710742326600014516151573818433074873571347151480633339154807771491686186504137251718025193277085933092836489690187071952377698248003131350492725771770443054123740560148914131206966746714456857429386774782479538309556989076624298535182614080667603048412962198026808651
 . . . . . . . . . . . . . . . . . . . . [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)
							f12a587fd8ecef8c4d1fbab9498a7b0a55ab2491
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.vastogirardi.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016c6f9a6cd7000004030047304502205b4006f0b9e6c8cc9fb9e67d49a561fa31a2ed7e382520241cefbc1f48aef0a8022100f9d2236d80100f6fa42a99c09b1468aee8f2c00a505cd7fc1d9343be5294ee7000760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c6f9a6cf30000040300473045022100bf58645ecbdb98ed969e561f454fd68e40fc762d22ea0d390c9621bc65fb27bb02204949eae36a3ead1330948a1c25a9266b96ca0e6b27661da3a27f8cdde44e2895
 . . . . [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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