www.torrevecchiapia.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:e1:b1:ff:ed:ab:e7:07:9b:d6:e3:04:1c:de:09:b3:c9:ca 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.torrevecchiapia.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:e1:b1:ff:ed:ab:e7:07:9b:d6:e3:04:1c:de:09:b3:c9:ca
Serial Number (int): 338136992563995342800745560831308963498442
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b2:f6:fe:da:72:05:48:8a:e4:aa:76:1d:79:a0:34:4b:3d:aa:f8:55
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a0:af:a2:1e:5e:40:9d:68:47:88:b0:91:f6:ed:64:f4:ab:9c:1d:0c
Fingerprint (sha256): 31:76:44:e9:56:62:83:17:da:dc:7e:74:d3:c5:87:e2:a2:e7:be:b2:13:27:6d:05:bc:20:ed:1a:9e:49:ad:c3

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.torrevecchiapia.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.torrevecchiapia.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.torrevecchiapia.com

Other certificates including the domain name torrevecchiapia.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.torrevecchiapia.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 338136992563995342800745560831308963498442
 . . . . . . . . [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 2019-09-30 12:54:18 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-29 12:54:18 +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.torrevecchiapia.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 761079081624361923982318652186817092135464073115113826184283735865432358616707783947897162503371972333340261040505643351788792607143996188966664778987896857557437645716358683400618386358478602688139472121411117367503313556341262512849877870574417608141659778347598153580266943359662717826896526485155262757058750805335494841090150728647122639954471494017839908854147916636926721974138567837101581404664837819048353662262505878791956259173468827874424384213164440759371877589798696255088159483893922260685859146242240784642447708178971134299487462857152127961631538769106152470039965857207203371622227750590136069303471840794630641786616388656663517915476189123876913538109426502497234126618005767965377519791599103197367130830814889895302701293455334521897152645198288869032970543887762631994647923940219751717791746797890443989128294452478257031122463302836438871851490130899179591088554653088563186912033462621088562337777928821860417936230024269967527465686769234444336760555951372568506407938917756169273915388263184879351139315233082475330248705350302676075864868106051574637891334502395408761270344406792192885117256183634984507911789186158593380854802858513811853362878899440518171598658306053919323852570642754609501024983599
 . . . . . . . . . . . . . . . . . . . . [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)
							b2f6feda7205488ae4aa761d79a0344b3daaf855
 . . . . . . . . . . . . . . . . [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 (27 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.torrevecchiapia.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)
							00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016d827352e20000040300473045022100b1c77b483edf07034b662e19d750a3a82f99e1e69e8513a5d9d86502ff25176a02203ad0c3c435edaf6c2c2be91ea10d349a375a6f3a24742777d048e392c070831d00760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016d827350df00000403004730450221009d25ba31e6282ef400403a60372e854d54c664a97f7498d1f9ad9106eedcef9602203b4c099f4003a7251d63c728cd0ce396cd810bfbce877564e592e0721b45ee61
 . . . . [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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