masterschool.org

Issued by R3

About this certificate

This digital certificate with serial number 04:c9:5e:56:a1:52:0b:47:d7:f1:b0:c2:08:5c:b1:7a:df:6d was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=masterschool.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:c9:5e:56:a1:52:0b:47:d7:f1:b0:c2:08:5c:b1:7a:df:6d
Serial Number (int): 416971296719251380532559942853500249759597
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: b7:48:08:99:72:fb:2b:14:1b:b5:bd:38:61:6c:06:89:6a:a8:0c:52
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 15:6c:82:a6:76:0f:5d:43:4a:f2:22:4a:8f:16:a6:dd:be:1b:a1:10
Fingerprint (sha256): a2:06:5b:c6:3b:c0:01:0b:b8:00:0f:19:6c:27:6a:9f:ee:5f:4f:f3:e4:09:2e:32:b5:ae:ef:f3:18:ec:d5:13

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate masterschool.org

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for masterschool.org

Public Key Algorithm

RSA

Key Size

2048

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

masterschool.org
www.masterschool.org

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www.grandville.k12.mi.us
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mail.masterschool.org
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www.grandville.k12.mi.us
*.masterschool.org
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ochoaprep.erusd.org
academyofthecanyons.net
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mail.masterschool.org
mail.masterschool.org
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academyofthecanyons.net
masterschool.org
*.masterschool.org
TMS-ADFS.masterschool.org
academyofthecanyons.net
samuelgompersms.net
admin.masterschool.org
web.euroamericano.edu.mx
masterschool.org
www.masterschool.org
www.grandville.k12.mi.us
mail.masterschool.org
*.masterschool.org
academyofthecanyons.net
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athletics.rsu14.org
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icabh.org
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*.masterschool.org
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doe.as
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mail.masterschool.org
mail.masterschool.org
bcsdk12.org
finalsite.org
admin.masterschool.org
academyofthecanyons.net
masterschool.org
tms-it.masterschool.org
academyofthecanyons.net
poecenter246.com
www.masterschool.org
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mail.masterschool.org
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Certificate

The complete raw certificate details for masterschool.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmmYV6NmCF0cgkmJH2nwY
nJCNkgOjE9JwydJUxYgP7LrZJN4QpIUHFqb5tMV1qumxN5KSDk5zCPWnsGcFYkxo
CF++Fu7SG7aI6e3MCSLlmFPiLKk0j7q++Vb5QvbzaEEyxAXPKpyv8Px+QSe+4NzX
vGP3JMUKfwpTupNjU6+zQOqrEUbPBXA0K1b9JhvyUpRSN5+ATPtIhDoOY47QO3ou
Agv73ibc5zrbeA0WuMOdbNgRexojNjBOEhbTX9Fhm3xhH25pNwZ0dYQHEwg6DqE2
hkflT8r1BHD+wDBzA9cOjY+JjdNKAVYLtl2m60p0+Dp/QiWldOOc2+iWpuT6O7BS
nQIDAQAB
-----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 416971296719251380532559942853500249759597
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-05 02:04:46 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-09-03 02:04:45 +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 'masterschool.org'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 19491039242576305661697339429058005648511938013175668051650296718883050054685690409508309689048978385804985063963689340043176361393187114240695965609413985420847143888611668111308950463110060563009765121649856250033430939443633941723615015437995679385967861483865627851279302354609673317248319041316918102004932961427538757049947917641737402721358497802817459980246802209604500260738214576800203776812405101558226313310250544633418283197128382876665815668717567794598401301466768589117354066171858152932071932805140658738579827413835440589843344286494294075445366162007429246931810715268377704993124649512284260946589
 . . . . . . . . . . . . . . . . . . . . [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)
							b748089972fb2b141bb5bd38616c06896aa80c52
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (42 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'masterschool.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.masterschool.org'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10077003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018fe65b30a90000040300483046022100e20baf40035a5d31c719a806d1587bf39c3c5b2cfe014e82560de1aabbd0d585022100bcabaafa0ee093650b8446b7e01a18a3c7c6df6cdf92d381db2e310970681d9200760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018fe65b30d6000004030047304502201266d7e1849a0933eb75949ecc392677ab7cc36f56e54ca8200992beebb588a0022100caab67f8c48609403f5f21848cfb17bc4eb1271a55b60222f9cfc644c1f0c390
 . . . . [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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