vendesibarpizzeria.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:34:ce:3b:10:62:c8:b4:29:59:d4:63:2d:ef:27:90:50:1d 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=vendesibarpizzeria.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:34:ce:3b:10:62:c8:b4:29:59:d4:63:2d:ef:27:90:50:1d
Serial Number (int): 366417954451921161299949866811283024662557
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 63:58:6c:71:16:f5:78:da:9f:47:e6:bf:ad:88:c7:96:28:5c:e7:70
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): dc:7d:59:c7:69:e5:6e:d6:c0:aa:63:ee:92:47:d3:a9:7f:74:1c:bd
Fingerprint (sha256): cf:27:b0:08:a8:6c:02:86:74:91:07:5d:fe:94:ef:f7:d6:2e:0f:5c:bd:49:72:fc:e3:a2:88:24:e0:b6:fe:a3

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 vendesibarpizzeria.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for vendesibarpizzeria.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

vendesibarpizzeria.com

Other certificates including the domain name vendesibarpizzeria.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for vendesibarpizzeria.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 366417954451921161299949866811283024662557
 . . . . . . . . [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 2020-02-16 20:52:43 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-16 20:52:43 +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 'vendesibarpizzeria.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 946035812865761537106787839706970427720822304100865430225299622106126939887255249882651303271015220958256993173814154885992800991219772823320626573538232075861332482957533061386953503023883057765929086425397273002577756323578309232771580288099904440810615269147239641716485011744312929623044400209145997036644804031423356671872502674229564846919414732499232445885099431433744966088337666635691173978813003127915302578709204275757729857009461618803563960399680943993257982043733274921690385163135473779152011223364301854403293508369913474594934127535856831229936667723714118856277249102555966761526072179800678963290753392569563118968884885513305516049155531771440101888575975387336798179823979195522303622820126783925443393283157603122899982620624785052526565688375726073728370710071377184746963477332534611796277121204161353005985275740773225270273042946284432550487387992419641587386907074749093033702615089149751450783149146577638782690731844753251761109199074593410346667177188892225171752868027395912063418041431326172090362636210636360424582526526612982536865609820006543887754759489319443264576468400178490430464325539155628710759558601775120499066232108799947315386040499007781458454542981767375584926316342271359287021185141
 . . . . . . . . . . . . . . . . . . . . [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)
							63586c7116f578da9f47e6bfad88c796285ce770
 . . . . . . . . . . . . . . . . [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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'vendesibarpizzeria.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e000001704ffd46260000040300473045022100f9ea24c2680dbcaba2e4dcbcf4fbda5425d8f431879433751b7a2cc8c5cae9a60220639778e0de13c74c84078966ca8ac284be949a1e973f745bd32629a416a8bd890075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d913000001704ffd466e000004030046304402202b7bf0f8548fcd44e08290e51360f5d5c59f56f8eb46921265046061ed1352a6022074dd71d589a7714f539e84fa96a4b0cd2399e37cace68481ac8b3dc019481232
 . . . . [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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