www.nexnano.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:74:1d:e0:b5:75:5e:f2:91:b7:71:70:eb:4c:ef:44:96:7b 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=www.nexnano.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:74:1d:e0:b5:75:5e:f2:91:b7:71:70:eb:4c:ef:44:96:7b
Serial Number (int): 300849326724898894177546050088853253166715
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: d8:39:c0:bb:b5:4d:98:94:da:18:0d:53:37:82:50:67:72:bf:8b:32
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 6d:78:f6:b9:82:16:e9:2c:f6:92:eb:32:ae:31:cb:fd:a1:51:6a:aa
Fingerprint (sha256): 40:88:e8:f3:28:28:b7:7d:e1:4b:ec:2f:05:50:f4:53:0d:25:70:6b:53:31:f8:a3:32:52:46:40:16:a9:6b:77

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 www.nexnano.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.nexnano.com

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

www.nexnano.com

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polygraphia.com

Certificate

The complete raw certificate details for www.nexnano.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA1y7V5t5z95iBPnQ+ZouZ
Vq3wMruoZ3sFijVjfeVqfQoNgfZdytltkKjqss75gfuhapQuUktO8foK0sdnIKu8
t040O9QeElHNp2xstAirhJ6o/GjFbIl+nGhHEzU3Fc531a7M1e3XwQ57Fa5Vilgr
Udc3A6IhaZZez69nrj5hKfN8QUFa5c7maEskRh2NCWNRiiw8IsltOKx4FsO9tnO9
8FmKXv9sOZnPESG2CRWV+10x4yz4i6u7yz9G4b0SMRLjDUu0gkT3EWe0z03j0ZgS
QyNQtguBbgb5ym8Qy9cJQzCJGwGzf2/F5YKIQ9w5C1d5NFJ5a6hnwJmab0Khd9GT
qwrjjw1PL4oGc9iKSuDHL+owBVnUjMlda4qn0eugCY4HdBF+xE9Ya8tsM1METQFx
Wp/m4FXizDgw9i+k7sg072Lp6dFHm7GWIilCpkPEmbmmnl3JVKsk2CA2mLvuD3j/
1pafEj1Y6jAQusksd7gAWQMX0i56NQKD3VexfHmmzV6hRrFBUKx/7I/QsazM40+S
54ubOYhrCifWCSG53f+pRw5S2N5yliA61JvyP6dmn/Fl36ChrAhFfk5xe9jreRRE
f5FWlUfMIHBjY79hDkPS/oN+xlTJ6fLJSUjQHA9ifPP51XHgMR6pifFZ4pxwSfxM
b6TAUYaMrZ5ss/ustv0axC0CAwEAAQ==
-----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 300849326724898894177546050088853253166715
 . . . . . . . . [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 2020-02-17 06:43:30 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-17 06:43:30 +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 'www.nexnano.com'
 . . . . . . . . [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 877869851148443892729584386082487487879952256915000264275715154287190154103078928747592370642710463219498822343448100317694922885227496712492691025231892721688658849740646917652647823772713146850668769544916905640118581528783645816312206322213700460932290701546791850397946159687890156334174010982026732986475138402610981801414924419296226469000318871478856357419457289351875747752986475438609227876910923592494389303899184751181330284679488547913186978494720276779502633246560730270245783258673103000689574338815698557565641538039829692372500441772695635065809386212467347793032223107251452343309970944527564534356438981911106551437892785359371245103717416056893172883179101676000732296694940874500639718335421506344767579281504152848369899601851420313826192812634777951753673693236128975518890227731494510148636232881324360641603722547047825309751911944451784132155340152947441102412168612265657516475508514194634209270252767025811929239649245912394789960548309420586645358534192297098132698280333828299538813075916624750058675048333487251941827398863397887746890776942783315501362055724696145817166930992361377422785045615763930747766704648941805497956117027709526446248348926814948041301631741458477690069033777658192447833556013
 . . . . . . . . . . . . . . . . . . . . [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)
							d839c0bbb54d9894da180d533782506772bf8b32
 . . . . . . . . . . . . . . . . [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 (19 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.nexnano.com'
 . . . . . . . . . . . . . . . . [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)
							00f0007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000170521a25f3000004030046304402205632375e4d674d94ac5b4f348fe5fe5a0de78643f218f0ae82935a9f1d0bc83302202bfc6ffb5d9b0d861ac26e580300ecc69a3636e513580bf1af8dd026899c1536007700e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e00000170521a25f40000040300483046022100f16ef9a7f07c7375f5031b69440fec959be97fc170b086c2476a076721f35d0f022100e956c4a81bb3075852ce43445f6796283712471b272c0514ceb41e072af70271
 . . . . [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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