mail.1a1.it
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:4c:8e:54:92:61:c8:3d:99:88:0b:67:ba:fc:65:3e:52:87 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=mail.1a1.it
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:4c:8e:54:92:61:c8:3d:99:88:0b:67:ba:fc:65:3e:52:87Serial Number (int): 287387507178588543511059744889791326343815
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: ac:9f:b1:fc:c7:a6:b2:40:3b:7b:a5:b9:b9:2e:79:c2:84:bd:13:6f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 9c:d4:48:8e:b7:4e:35:6d:24:26:6e:e9:6e:07:41:a5:16:d4:ef:ea
Fingerprint (sha256): b1:99:dd:cb:34:38:1f:33:28:16:75:05:0e:d7:8b:aa:2d:f5:5d:3e:02:e7:23:37:6f:f3:ca:0f:ee:34:ff:bb
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate mail.1a1.it
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for mail.1a1.it
Public Key Algorithm
RSA
Key Size
3072
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
mail.1a1.it
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1a1.it
Certificate
The complete raw certificate details for mail.1a1.it in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGgjCCBWqgAwIBAgISA0yOVJJhyD2ZiAtnuvxlPlKHMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODEwMDkwMjMwMzhaFw0x OTAxMDcwMjMwMzhaMBYxFDASBgNVBAMTC21haWwuMWExLml0MIIBojANBgkqhkiG 9w0BAQEFAAOCAY8AMIIBigKCAYEAus90HgnGq3F6PyiLtP99T5m50aolGNbN6udj S3aw4X4QA3v2hbOGc5JJsmZ4fr8eLM76NZjNKIehPNyLW4gq5bP5UHdblyM5goTI p5XWrgEPUm9vW2+K4IFMvL4n8R1pOeTEetDz3AKvsepEX8EE17DWpoKBkAsxuT03 cXFGftONuresD6YcN7qXrUszh5OwE+pmtk/BkerRwE1BXECqeWqOZx9Iz2U0yCVG DAPYjGZZ0Uw0WqevIp4qyOqv5g6RPFKyCdrP0mAO4Yv8PGtS4K0rIkxYHBaWLu8r a21DUUcOdE2PArjn5JIIdbI/9E3UUpZFKTUo/8/LMvfTlUT9s0ZEO51jnzFjDkfg xv5fULYLmrZoYMgTKYNW+lUik28QTK564nalNyTRElcDUH9A9XL8/CJQiS1W4oGB pVphzJjmtIeGRcSK8wuh5O2DhB5tCNBwh1WpT/zqt+f766bWW3kF+4n3dt44vvt/ 6kIQZiGFMZVC8jHX4cKSwtoQOXZxAgMBAAGjggMUMIIDEDAOBgNVHQ8BAf8EBAMC BaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAw HQYDVR0OBBYEFKyfsfzHprJAO3ulubkuecKEvRNvMB8GA1UdIwQYMBaAFKhKamME fd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0 cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0 cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0Lm9yZy8wFgYDVR0RBA8wDYILbWFp bC4xYTEuaXQwgf4GA1UdIASB9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEB MIHWMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYI KwYBBQUHAgIwgZ4MgZtUaGlzIENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGll ZCB1cG9uIGJ5IFJlbHlpbmcgUGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNl IHdpdGggdGhlIENlcnRpZmljYXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xl dHNlbmNyeXB0Lm9yZy9yZXBvc2l0b3J5LzCCAQUGCisGAQQB1nkCBAIEgfYEgfMA 8QB3AHR+2oMxrTMQkSGcziVPQnDCv/1eQiAIxjc1eeYQe8xWAAABZlbgaAsAAAQD AEgwRgIhAMbsB6vAQuWS+nzJCoSRlHO+scnITp/YqNP30+AAfOnzAiEAirJ2Sitd i88CWJq0gsRnpkCxzm+yPqRiyzdhpjHdKhsAdgApPFGWVMg5ZbqqUPxYB9S3b79Y eily3KTDDPTlRUf0eAAAAWZW4GllAAAEAwBHMEUCIFcM2S7Iehv4ZkU2wrPcYpDU fmgjaNDb+1wPYljKjyPSAiEA51z0oa4W1qufVCtkGoIVz6Fu6KIR/PDhUj+XKEBJ Cx0wDQYJKoZIhvcNAQELBQADggEBAIU7dlp4zn3E06oTpPUv8uSyW/I4vDeKUXSA 0q7TLbREV9orhk9wKJal693kSzCXACVm1NwUG5T2gpZcAF4N68UR8ZoiNPmxbc+Z hLGAvFPDQ9o7jWe9YNju08S2X3SA0cE1438ws88cjsv1mCZ49EtqIE+SEvdEG+aQ nB7PtIapxN5ljGsuP0Ofem8/L69SJmtAJLWWYZc2JIZYW78nYBhr8paTMrzmZ5XV Mibxflb0UhRRMkchHHVk13Id3cDhIfuMLYy7kfysYGJu47xtNCRdnQA/DwiINRAl ZZciKGwhuYPdW+67eRZwxRiCVs8iwhMfcoernNjesMK9i1hVD6s= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBojANBgkqhkiG9w0BAQEFAAOCAY8AMIIBigKCAYEAus90HgnGq3F6PyiLtP99 T5m50aolGNbN6udjS3aw4X4QA3v2hbOGc5JJsmZ4fr8eLM76NZjNKIehPNyLW4gq 5bP5UHdblyM5goTIp5XWrgEPUm9vW2+K4IFMvL4n8R1pOeTEetDz3AKvsepEX8EE 17DWpoKBkAsxuT03cXFGftONuresD6YcN7qXrUszh5OwE+pmtk/BkerRwE1BXECq eWqOZx9Iz2U0yCVGDAPYjGZZ0Uw0WqevIp4qyOqv5g6RPFKyCdrP0mAO4Yv8PGtS 4K0rIkxYHBaWLu8ra21DUUcOdE2PArjn5JIIdbI/9E3UUpZFKTUo/8/LMvfTlUT9 s0ZEO51jnzFjDkfgxv5fULYLmrZoYMgTKYNW+lUik28QTK564nalNyTRElcDUH9A 9XL8/CJQiS1W4oGBpVphzJjmtIeGRcSK8wuh5O2DhB5tCNBwh1WpT/zqt+f766bW W3kF+4n3dt44vvt/6kIQZiGFMZVC8jHX4cKSwtoQOXZxAgMBAAE= -----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 287387507178588543511059744889791326343815 . . . . . . . . [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 2018-10-09 02:30:38 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-01-07 02:30:38 +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 'mail.1a1.it' . . . . . . . . [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 (3184 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 4239432108415313354182565358015061117412904465436903945344069341673997709743820265603270588694400855963066298224078143000369675487323593608954105461441077938259239378649099012370229926893338067717345470459162122414714693540255174435313780759363599307707285581960622707545727075024137262306278946718192764827767078313580387446210553791641292041227557261813656364742193191742681175394466220806599328871417607060565255545453461196649215385867418737147329962467188199842666327803244583017264374457868379500424684032223694932028517617487126297468163559825914428325954768786165900317698741576520050578374314485333738573978284591290289461611630396204172798445276451370410895175970507763393998601278292335837473509804269018946112369927736431485490743319860443141265564227565193368688371348437866653588358031044992664530247986437180928078023377608047154499784570934840308547895614879001679842209880558846267972488818507649380676892273 . . . . . . . . . . . . . . . . . . . . [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) ac9fb1fcc7a6b2403b7ba5b9b92e79c284bd136f . . . . . . . . . . . . . . . . [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 (15 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.1a1.it' . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . . . . . . . . . . . . . [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) 00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016656e0680b0000040300483046022100c6ec07abc042e592fa7cc90a84919473beb1c9c84e9fd8a8d3f7d3e0007ce9f30221008ab2764a2b5d8bcf02589ab482c467a640b1ce6fb23ea462cb3761a631dd2a1b007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016656e0696500000403004730450220570cd92ec87a1bf8664536c2b3dc6290d47e682368d0dbfb5c0f6258ca8f23d2022100e75cf4a1ae16d6ab9f542b641a8215cfa16ee8a211fcf0e1523f972840490b1d . . . . [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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