39783.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:de:22:a0:19:ed:0c:9d:1f:10:3a:c3:8c:d2:56:fa:4e:c3 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=39783.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:de:22:a0:19:ed:0c:9d:1f:10:3a:c3:8c:d2:56:fa:4e:c3
Serial Number (int): 336925568296924349916176843179917104008899
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 6c:54:30:5f:95:30:22:cd:af:e5:98:5b:57:bc:c3:93:ac:65:87:4e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): f6:4e:21:c1:fd:aa:2b:7d:91:76:7e:96:1a:cf:e1:60:d2:4a:63:dd
Fingerprint (sha256): 16:be:df:12:6c:51:24:af:5d:fd:5f:27:cc:43:0b:60:0c:74:9d:55:41:fd:5b:cf:b4:b7:61:1b:d8:f6:65:59

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 39783.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 39783.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

39783.com

Other certificates including the domain name 39783.com

(limited to 100 certificates)
www.39783.com
39783.com
www.39783.com
39783.com
www.39783.com
www.39783.com
39783.com
www.82573.com
www.77823.com
www.39783.com
39783a.com
39783a.com
39783.com
www.39783.com
39783.com
www.39783.com
valeria.org
39783.com
www.ventureupon.com
39783a.com

Certificate

The complete raw certificate details for 39783.com 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 336925568296924349916176843179917104008899
 . . . . . . . . [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 2019-11-07 20:07:29 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-05 20:07:29 +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 '39783.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 708983929840027910113570601768697568406261473583309092274285222720279530622491442612720590486896829684794173424953340398440221697635223838328677684287355575615386847142823754811555456365270868960600670891057919183376333100294585345037301601566600941832457355001405087646032342012710596421817857825273231528077467168006723209309783379555681547935389983913818484832709942821277659669618329581580780687215065721060813010508140846504507301831704676467787320259240804391509524207336162475387595010829385655060511934321000167026404367912005814388979874541191013741018929091037662350522210141281538714881139185249311626532413664626278178376298590227680506319064197395319571824224155072523371922437674844699497078588363171437572912803462404405140709293009693863415282840822611525576793701856332335203831048369250881490055810246018713097554083180482064317422882462089807948598481283020384732175096992736891795591055099497381169859152119591785389920051102289786997014549890819035925470633803716140758741080848792913858915250458539662566872441050151635485064259521051022449612420783629371291432665529002147604445556302255155227511590962262590896413096659593788760317613027754381818129976882103349647949714082227857163272818394895770256399708817
 . . . . . . . . . . . . . . . . . . . . [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)
							6c54305f953022cdafe5985b57bcc393ac65874e
 . . . . . . . . . . . . . . . . [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 (13 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '39783.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)
							00f00076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016e47b18fc1000004030047304502202fc3bc4949b531dce5de0805a6cc96eaf99627d4d6b787abb97202b1530c7b43022100cee4e0056b9e92b5f7e794efa465ef890dba1c500cdbfbdf779ac601a8b4ebfb00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016e47b18fc90000040300473045022013c9d6493fb3bc79b9dd435c314490a18edb94c3c5740bffb5707c24df09a85c0221008bee7dab1aed0d6cb2127e1bd9c329d24fb3efa2c61f88cc946f2160d8cd7d6b
 . . . . [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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