mail.1a1.it

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:bc:6c:28:7d:de:0a:e1:40:bd:fa:57:98:bf:16:b9:12:2e 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:bc:6c:28:7d:de:0a:e1:40:bd:fa:57:98:bf:16:b9:12:2e
Serial Number (int): 325453709644729503077133918356925922742830
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 8b:2c:3b:d4:c2:11:a2:d6:5c:58:ff:6e:40:e8:6a:3a:d4:a7:45:2e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 9c:58:4a:26:bb:55:58:cf:f5:c8:6e:81:99:d3:e4:4d:41:41:88:e9
Fingerprint (sha256): af:b2:84:68:36:53:c1:91:06:a1:1e:2f:ec:b7:d3:59:13:99:f1:57:98:11:81:00:dd:b6:48:f5:9f:d0:2f:60

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

(limited to 100 certificates)
1a1.it
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mail.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
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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 325453709644729503077133918356925922742830
 . . . . . . . . [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 2019-06-05 19:40:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-03 19:40:48 +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 4310107571653889103879951125561915746883757033125503539934172543147044600333795097326425209981846484276567757258613828231247871348392167595891171602565153578803674216827759180869269746671253549484475019358530570641100383658575259325360325970622834193660308658036285243754836000575164438457465373912159717432538411061293296226863597482881702023095064529927830490934018971213600307740772559440783454924215067522185736670790031812808687371619441562970562249703608510745371512735481054926196939083454895680342235071687445677238122351507766597273871554119536018138966300858038622457438301648131880148857086385921008924340714585256173702113986598829780909060777291717434455039406081336467983368215073018097568392034736512132705737877499699606641117650001959477490579233806067284197105766254762117300023028340029672047245394775421989843509342257660145251390741875552357461327893544405069057584250820472155146450379915050883449710879
 . . . . . . . . . . . . . . . . . . . . [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)
							8b2c3bd4c211a2d65c58ff6e40e86a3ad4a7452e
 . . . . . . . . . . . . . . . . [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)
							00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016b295f70100000040300473045022100b53ba1d5dde7b2aa900829a8cfd45facebf6c83bec893e6ac60b0d09a955002102204bd0a62fa3bfa02a1ca1f65f5235ef2b66cbf4d30ca4a5246be23665e465c7cf00750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016b295f6e3e0000040300463044022066efac43a0f5d73f87d89f3e86c300a5e4ed59d01363785e24ef05d39d101f360220217c66e4bef9aa0d0b879af5c7a939bd8e0a8766e769764e96035043647de6f9
 . . . . [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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