mail.1a1.it

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:de:44:80:93:5d:d9:91:ce:51:bf:8b:3c:53:0d:48:c2:5d 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:de:44:80:93:5d:d9:91:ce:51:bf:8b:3c:53:0d:48:c2:5d
Serial Number (int): 336970598358390110932347467791596666798685
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: bf:be:39:ef:83:95:03:53:a8:3e:ea:f6:38:14:50:7d:ce:c9:4e:f6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 43:25:83:ae:f1:d7:5c:5c:ce:08:c4:c6:50:2b:d1:b7:3a:15:0c:8b
Fingerprint (sha256): 0a:66:f6:7a:84:8a:a4:85:04:a2:9f:94:b5:e8:b3:80:82:7b:a3:5a:a3:d8:4e:5d:20:46:27:33:83:a3:f0:7a

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

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1a1.it
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mail.1a1.it
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1a1.it
mail.1a1.it
mail.1a1.it
mail.1a1.it
mail.1a1.it
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imap.1a1.it
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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 336970598358390110932347467791596666798685
 . . . . . . . . [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 2018-12-28 00:30:19 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-28 00:30:19 +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 4672842612752081348585367833324802941631162612017180609525931226107808698387066939630562324319307259379472801704039832966013512194081227684572676362554038531535647327506433906347257712023131858245863515945174623201705504551062816498222308854419897340120302246752737166702648746744748318017058314484413657541853594051175256951567637321694469525438612450256225556827808531387464746660845611922112728429120776136570612654624730033881434342032127935386412261395848005049325738935472346200706070519415184097632146989397705225397921009662720326398085262531260650439422256162412549676862287271962652384248321363332063842128781655924254727762857465911386566580315815663021388649867011427388752261933731042574530140435836299269977339480705704095464787542175727391768992669168412794170852878317920286996298919553266129136464094160297218472829486559348424740127694850378963283708151976948512581796826915336946457816634592346828643503051
 . . . . . . . . . . . . . . . . . . . . [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)
							bfbe39ef83950353a83eeaf63814507dcec94ef6
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc5600000167f26efc7b000004030047304502206b766fe52c29adc4590f8a574ee815189a6cdf525fe4eefdbffcfeeef899ccf5022100df4292f81e940450e392ccb166c20b4dca45e901fbcc8497b6b4f224b6ce212200760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d00000167f26efcdd0000040300473045022100c6846c4285bf8e441941f47b2656863e7c5f28dce27350945e97ae2182c43bfc02206e2470afaa59fecdb6a9f9baa0c373a4d39a10316b9905ebfaabd2ada83565af
 . . . . [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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