tuttoilcalcio.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:26:9f:c4:9e:71:7c:3f:5c:6a:d1:2e:11:c6:6f:fe:d4:07 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=tuttoilcalcio.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:26:9f:c4:9e:71:7c:3f:5c:6a:d1:2e:11:c6:6f:fe:d4:07
Serial Number (int): 361592241825162675129159154334666399339527
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 79:50:26:62:21:e1:fe:bc:1d:5d:19:a2:70:71:e5:1c:93:e7:43:85
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 96:97:03:04:4b:81:a0:fe:e4:e0:4d:b2:4b:2f:b5:d3:41:e4:c3:3a
Fingerprint (sha256): 47:93:cc:3e:5b:5f:4c:c9:1e:32:d5:d0:35:eb:bc:f6:53:c0:f3:f9:26:54:50:0d:94:04:fb:b0:73:08:dc:c0

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 tuttoilcalcio.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for tuttoilcalcio.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

tuttoilcalcio.org

Other certificates including the domain name tuttoilcalcio.org

(limited to 100 certificates)

Certificate

The complete raw certificate details for tuttoilcalcio.org in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA8gUDzi4d2DbWOpkIWMm6
m3gq5spZNpmogAndO80Uv/0wl5Is9M6hUYB13zEmXudo7XbZtEQm2zA0Qjh99sfR
QKhFp68cgzzyv9zJvacBjY6QWn6wMwT7e9DV//0JOBeaHmlOWQK34MQEK6ikSaxf
OF6aRr99ipbUyWhP/S6LPsoWaT95juiXqj+DzDFxZXdg9ZRXBLGfMmp7Ipl3mZuS
fnBJMYpxoDYdrMgUN8+p+38ZjGc6twv5DJhjvdTveMlafIqGgyQCzFaHqB7HBXRS
9BcRmjXCdMQ6z+bkGYnBDYrhASheRx6vyC/Fq0l3iZw912G9xKgwHKx4STpdoYNS
AHGxG+6vTBZixk2mYy5vCmL4ZLeNk+79dx+wbDwmQcBJ9rV2SEJTpAvaR1Cv3JBn
nVlkLa4sfuHAXzGuI+pM9kes+P5xyxceHsh0iNBV2q6/eQXPzjR4JGzBDom9PwGB
NrCaVt6JWWMeTQtwPN6sN3yT8Qt6Hhxn+FOAwToYq9CXUPYfbEwJKPCgPEgrw3tc
cAeYCcIjH7MKXOV9t0VvWY3E6yOUx5zWm7KzcQMNhaq2vHtPFVetvUqv8dibcGHj
Ti5mtDw07jTMhDUK6gpSVCLZgCocZ2Lb+S17O44HVarCLAdylvax7dGcZpbEeky6
Cg90PdinSGUPDFcfSUtpbL8CAwEAAQ==
-----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 361592241825162675129159154334666399339527
 . . . . . . . . [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 2020-02-14 18:11:25 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-14 18:11:25 +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 'tuttoilcalcio.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 987353781896305187749900313249921749257497609198614898480517786608690545441496912388296820690085404536569336525108100826923518833932262601290466872293086501770917065348850352579425608863627816429430019803077369440038503830622419240916746709865206652557726489431309034488456683794658105265629557939631914754895541887815853417370892883396426719699676264472908932025753762309487883675052035222223445792116072771181338102642235358475852858845468815579894208365151118380718429629562103936190865961635308145565325438873781691107688282530593006201052771848538679079628317944226101031166374868648860825095585493830214266848418164126177486844802503361117872964301897759453998788620162822136338067382370443430976036854490746711117580867540619262687684427510870126226290724640199991267027044879460498569197899223541011341218024085370686350333892066193225504639219341819839004962863238049921063355723023426098055511906978961418066268864508961597821315011658069915939959635597963770415924203751804096103841577203003008092371898379333386890588975646319601642995369577153366963031595938407756980069196843986776899583705954545062224735298194679728374717549215248763485949776426155321762911814958333093855382020603344597713485840543737132091531947199
 . . . . . . . . . . . . . . . . . . . . [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)
							7950266221e1febc1d5d19a27071e51c93e74385
 . . . . . . . . . . . . . . . . [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 (21 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tuttoilcalcio.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000170451ce1950000040300473045022009f248d3b000a71a791e741f77a87ae0b4737c6197f8bf57e04256da7bd1cc7a022100c5d688da27304f2283eaa3e530cb3c8ca6f3b1088e9861b04a46e2423cc90d7a007500e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e00000170451ce19f00000403004630440220126a8c9ce3ef14b571b77a486f09680c9fff6564f221d53bf948009583741965022058161ec5a220b8e33e48f105942b33a7fe780c84a0ba04e61275c4fdbe6e5e5a
 . . . . [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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