www.sassomarconi.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:cd:76:26:e1:3c:f6:11:d9:8b:52:97:50:d8:3b:23:86:43 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.sassomarconi.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:cd:76:26:e1:3c:f6:11:d9:8b:52:97:50:d8:3b:23:86:43
Serial Number (int): 331251793793228374810276291925711371077187
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 83:26:5e:10:0d:60:a8:33:84:b7:ac:f7:e7:01:d0:f6:cc:d3:ef:f0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 76:19:1c:ce:dc:3f:6a:12:47:aa:c0:78:23:cf:12:f7:79:67:ce:82
Fingerprint (sha256): 35:aa:42:f5:39:2e:30:6f:59:f7:82:e3:b4:8a:d0:06:2d:0a:0b:60:21:f4:1c:e6:ad:21:ae:ad:27:23:88:28

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.sassomarconi.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.sassomarconi.org

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.sassomarconi.org

Other certificates including the domain name sassomarconi.org

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.sassomarconi.org 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 331251793793228374810276291925711371077187
 . . . . . . . . [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 2019-07-28 23:41:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-26 23:41:33 +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.sassomarconi.org'
 . . . . . . . . [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 784569081112927459077960025296764754037557015018889434423987120122859001844854792841181175127628370678958429240383186829192285569342298450269743854698444014656827957227068824192185504623186691048976515152351636690916880393138377427983759004071389959074718653782785440248734576892198380101372731880471968653370117299555653696667661752322263128109362612189087392167792253950872180202584480070964485902489076136956849383032157735803322841635313243022858374282425035690582431845136734782032145392316125316030040887053433627630063406118679296822448669614102379518242061587527251008694017521147594822407059990815330686963223886988595714929873966439178748895807261878522455022030721253636795521559022034768517852112030987388425523271404047101038729343638522205420448347981353232326791047273549315984578917247175474260897098934515885882336815339659514432686035560334943419401388961434897924866602381025244790004784903681730755760558881398711069327992646373452177993229009224323478574628431271404018305158174412700004926664073807190794800736514666620100568045330284036701915396346343266536992372452351990192080644888252078469081886518836452010657980744748197873788913435977478604916835168619165694643596289102856656180923405692709525640152859
 . . . . . . . . . . . . . . . . . . . . [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)
							83265e100d60a83384b7acf7e701d0f6ccd3eff0
 . . . . . . . . . . . . . . . . [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.sassomarconi.org'
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c3b2ce29500000403004830460221008669930a176df0df4f740d3fc98e42bedcdecf6c1c414d7a57da4285bdf84d61022100fa95695e81ea8a738421b92cc1d328990f715b49907489f4a9d0bc65054b1e0b00770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c3b2ce2880000040300483046022100b3c4856ab6b88061ad5bb62724a8a67519d8a2288bd2e9320c1eec04722bb8b2022100fcf98d089fb01145d7b025f05ff9fa72a2704c7da506bd0431903ea33746348e
 . . . . [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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