www.k12.biz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:ab:fb:44:7c:3d:91:37:22:45:70:51:f9:e6:47:90:0e:fa 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.k12.biz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ab:fb:44:7c:3d:91:37:22:45:70:51:f9:e6:47:90:0e:fa
Serial Number (int): 319859134361786262189849162309972842778362
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ee:41:b1:3b:e5:80:3c:89:fd:45:1a:a0:54:87:b4:fe:9b:de:b2:2f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 6c:d7:4d:7e:49:53:54:d2:8c:91:dd:91:3e:71:1f:04:f2:27:ae:61
Fingerprint (sha256): ec:6d:40:fd:75:de:c1:e2:66:18:26:29:f0:c5:e9:1c:d4:59:a3:87:c7:f1:cc:98:de:ed:10:89:3f:95:b7:ee

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.k12.biz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.k12.biz

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.k12.biz

Other certificates including the domain name k12.biz

(limited to 100 certificates)
k12.biz
www.organicmedicalcbdoil.directory
k12.biz
k12.biz
www.k12.biz
k12.biz
www.k12.biz
myautodeals.city

Certificate

The complete raw certificate details for www.k12.biz 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 319859134361786262189849162309972842778362
 . . . . . . . . [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 2020-01-16 06:34:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-15 06:34:54 +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.k12.biz'
 . . . . . . . . [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 708432346076034730807997129863226030701544917753965101896527081032619168741218319004291461012856040074345813471992844562616069202761131376240275355710852451708849527972969154055203258747489865640653246535963312538799475921623728975751636834713093969405142350381450664100602087561930011592990502000757812529690835973789825063517798594749756982630421200141419962537265979931755016592394835416742762476361589975852561161491642442031590968997999905459625576479510021415890065896460827391132790487136796433905226582866629959596251433557358430266131113069843191843385071346130186809915262375941624458395328516076005825112165426875288335972422636126366289541198269482033223108082954977267735337703365595268719557022262822880579339596235078752249280610188128108947623384469208061703769497681847502900793748976599152680572111656474021688415903634943260475023940405384798061865914655791361284820406040395203842785837014117082580163504310536615224250431128373300208382663850833342606526027482552457883564781054782126159034296626622578669420511143985113165166521724298295981096848981649705712153079338928502513340859770483496111664548958903753316959400231730905863067833496026517938746525273674585831301923239996278672634567135427787775255336547
 . . . . . . . . . . . . . . . . . . . . [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)
							ee41b13be5803c89fd451aa05487b4fe9bdeb22f
 . . . . . . . . . . . . . . . . [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 'www.k12.biz'
 . . . . . . . . . . . . . . . . [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)
							00ef0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016fad46c8ae00000403004630440220063b7635701bad1376bca8f86e56b894e613e9ed54c1075657cfdd37f72b9a090220137221935d1236c3304242a804b8953065e5e976fb701b4b5c698c9bc385ba3100760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016fad46c8a900000403004730450220567d10b972ac198a5b147e9ee8a7629816449f1bff8c84e8d3238dfdf4081204022100979a48ac22f8d59b98019a8a1432ee90942d0a78729f80e994fe63010ccf8993
 . . . . [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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