mail.1a1.it

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:17:8f:b7:62:0b:14:a8:f9:7e:c7:11:ee:13:4d:1b:d6:13 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): 03:17:8f:b7:62:0b:14:a8:f9:7e:c7:11:ee:13:4d:1b:d6:13
Serial Number (int): 269354384016738724366273199884296326469139
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 9b:d2:42:ff:d2:17:7c:d5:1b:71:16:c9:6e:48:70:6c:f5:f4:44:49
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 6b:9d:70:21:70:f7:a6:7b:4d:de:0b:09:93:c4:aa:5e:a5:38:5e:9b
Fingerprint (sha256): 26:6b:76:ed:fe:8c:f6:20:20:1b:7a:e1:9e:d5:2b:70:72:89:6f:bb:45:5a:7c:8f:fc:4a:e4:f9:95:74:94:99

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 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

Other certificates including the domain name 1a1.it

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1a1.it
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mail.1a1.it
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myip.1a1.it
1a1.it
1a1.it
1a1.it
mail.1a1.it
mail.1a1.it
mail.1a1.it
mail.1a1.it
myip.1a1.it
imap.1a1.it
imap.1a1.it
1a1.it
mail.1a1.it
myip.1a1.it
1a1.it
smtp.1a1.it
imap.1a1.it
1a1.it

Certificate

The complete raw certificate details for mail.1a1.it 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 269354384016738724366273199884296326469139
 . . . . . . . . [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 2020-01-31 13:01:06 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-30 13:01:06 +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 4998953547151829380721426495264207439078915770463831117441214602839036998224640077665323123502374736524715446519937656944685749740728898927462921032889675269567024575912520124850884741352515962343156118470594724803911000036053119631982778676789588158625100025210407510963979395749886264855380901158683989081325356037365719350024117091427005350386124192018764070262823924982429247757873675969133080584254116468182939398252878738097673322517446994629821236684618460330212894303602235800927505930967959631550926687396728095193513365347210607622647126708299622814638191716408443640556582273819323913704570260838465271363738551271715423975068881080853373746771088899114852171590511313512761229510550714818503527674350046483758569081950151344121163260470000761885082570259617835023422895905053911648842466764856451707806192994814607721356797997205920777361990108470693290924561811774191030396542692684642220441475046706081665641619
 . . . . . . . . . . . . . . . . . . . . [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)
							9bd242ffd2177cd51b7116c96e48706cf5f44449
 . . . . . . . . . . . . . . . . [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 (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)
							00ef0076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016ffbe7bee30000040300473045022100d1d0878e292f64b635222e1acfd17374e4db2c2cba913f01f443956fb2f8587a022059cdd9e56205d1b7365cae7404126acd0a24d7cf61845ff1093adce3dc9ba7c3007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ffbe7befa000004030046304402201b0a9e37cccc7c57c4f66eaf3e9e17e805bf7f25448d121f54557f448bf9da6202206a96dff9d636e235b72be538374a8807b98416923b673d390b255ec627f4f4c9
 . . . . [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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