bressanabottarone.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:6c:01:f2:7e:fb:2c:0c:54:8f:68:7a:04:b0:eb:a0:a7:39 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=bressanabottarone.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:6c:01:f2:7e:fb:2c:0c:54:8f:68:7a:04:b0:eb:a0:a7:39
Serial Number (int): 298089941762061155436132158307783766222649
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 82:b1:3c:98:5f:1a:2f:35:82:73:5b:94:a9:de:83:33:fc:e6:a0:c0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e0:23:87:f3:fa:ac:44:08:84:ce:f0:88:18:3e:f4:e1:eb:46:4f:4f
Fingerprint (sha256): f2:b2:6a:ad:bf:37:26:40:b2:27:0f:d7:cf:02:a7:a0:d0:b4:60:be:7a:b5:e0:e5:c7:b8:9c:44:0f:ee:4a:41

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 bressanabottarone.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for bressanabottarone.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

bressanabottarone.com

Other certificates including the domain name bressanabottarone.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for bressanabottarone.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 298089941762061155436132158307783766222649
 . . . . . . . . [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 2020-01-12 08:56:24 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-11 08:56:24 +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 'bressanabottarone.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 718983323825332185208182662631507822945880514721923409265978923763240609833170094588246119047452883246519312668504800745330108074885805349023673209311091320376736234129924346909893674162401895853592695807454999597578327908235085237093867633785032892875827432131689300272846765874794575287424979399072253163583755078980019850918379166691821863101479031592909521891998222774102776599239993458249563244095795683351035262472074510182923597345931610268456996561260652110309647394551006627711052354630160993088573594639780535281777271265209689408194895769373721954420359137485570444778942689070363439969689318001545778387597800326287413174583266160312868560987805294602292518548792094136812270159013969871437999360017159415340521038029880420457606480095983346641555819584235484937253256620333035717524276866306715910434549917695138034828454090755974187254097327697961603234055587260676360015828270930179327535615309296878449897386631067386878752327294776660311331951557121325284032429180721768357712870253608620666816402243605178960791069775375442113119610083102500388014731675489986518288482549241888402007729371383082976647524672005350975171105812698768305906003953467312510462056633809368696991091933098241632502014116321500048013357287
 . . . . . . . . . . . . . . . . . . . . [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)
							82b13c985f1a2f3582735b94a9de8333fce6a0c0
 . . . . . . . . . . . . . . . . [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 'bressanabottarone.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)
							00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016f992ee492000004030047304502210088703cfa934ff69b2662f52bf05e60a1651faf7a66dea67ba11ee45e2ba77ef4022014f38f1bd07d3c4d70a45d2d58975eb61fedd7bf9bca60392e1e46bb42cf4bfe007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f992ee4720000040300483046022100a187c932224878d3b5d72f7972fe848c5c7f7dd271ebe0ebd1df6d4c14066d33022100d81fe3d51d37b83e9f53cd76820cce8ee4318fefcd22bc7db8a1d8749beb8cc6
 . . . . [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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