professorschoice.org

Issued by R3

About this certificate

This digital certificate with serial number 04:21:93:00:69:87:e4:69:4f:3a:34:55:aa:9b:3f:cf:3c:d3 was issued on by Let's Encrypt.

With 12 subject alternative names this certificate can be used to secure multiple fqdn's. 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:
  • 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=professorschoice.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:21:93:00:69:87:e4:69:4f:3a:34:55:aa:9b:3f:cf:3c:d3
Serial Number (int): 359873860491231838730545860405386508451027
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 49:c6:5b:f2:f3:21:cf:1c:ac:26:d3:8b:29:30:a7:ba:0d:b4:56:25
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 3a:ee:97:55:19:9e:6a:96:da:c9:c0:4d:b5:ee:37:0a:a0:f4:94:8e
Fingerprint (sha256): af:91:fa:7f:74:5b:a6:1b:b5:90:f7:0d:92:c7:92:c3:30:1a:4b:14:c9:21:53:a8:d2:47:40:11:ea:34:e0:bb

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

Revocation information

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

Check the revocation status for certificate professorschoice.org

12

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for professorschoice.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

artyouswim.com
canoetrailers.com
computerblogs.com
coramba.com
dundycounty.com
healthyhomescertification.com
healthywayeveryday.com
horsecommunities.com
japaneseknotweedattorney.com
professorschoice.org
surfhq.com
thebannerexchangenetwork.com

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omeiapad.de.omeiapad.life
joycemeyers.bible
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professorschoice.org
resources.me
leaselock.ca
micromobility.vc
leaselock.ca
leaselock.ca
professorschoice.org
professorschoice.org
bud.world
impossible.ca
impossible.ca
impossible.ca
resources.me
summons.co.za
joycemeyers.bible
professorschoice.org
v-b.co.za
impossible.ca
34725625397.ca
professorschoice.org
34755625397.ca
impossible.ca
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impossible.ca
bud.world
impossible.ca
resources.me
impossible.ca
resources.me
ny.world

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2miKZopUNhfao7gQAhIf
Q00hdJiNO36KMLAwNaNC/tc9Nh6/CDGgbWPf/vXslFsN8KyLi27bolwmvdcQPyo4
xH7cB6OHgtbaWGrIHiK/ZOS1Q4ZHe5rhWAeZIwinXQCMr9CxiynoWJFLu7HVw69g
S5BjQFPziD0wk1vyQYQZmd799kZxk7RwMMfaJVsFzCpmO1pPbIKLwPqXzndMDkOc
/3Oi5yy6TNUwsXwhXvOuKZe0dyF2QAcEiKAjav0U7g4ichYguJeJi0KnlVsNmo0w
/ePecFTjLVkWuUL1AlOFAvAHn0OS/swKGcR2EJ9sr1bU8EEyyazDtGXLvznJwFQc
pQIDAQAB
-----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 359873860491231838730545860405386508451027
 . . . . . . . . [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 2024-01-26 14:31:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-25 14:31:47 +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 'professorschoice.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 27571501387172794431716893743119771665976404027285360167448135197914805468317246402310217060932362489244401223793803215783959020131802759003715122231076885864466615573574503104965141727267711613937994647760463820156377577416991679681255508509440882682585125261028499807829525432222021666919237153721945315120898592947019156801197904527878217219894329912653816126621143446161820715429774165719275503034887605190451213908257969335645964284900495750449568147256723611497426890966088640977254420770334674417416594183438104138071904607604719786258519412369353637852601212559046400354790544089211934307531967391693672815781
 . . . . . . . . . . . . . . . . . . . . [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)
							49c65bf2f321cf1cac26d38b2930a7ba0db45625
 . . . . . . . . . . . . . . . . [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 (258 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'artyouswim.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'canoetrailers.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'computerblogs.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'coramba.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'dundycounty.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'healthyhomescertification.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'healthywayeveryday.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'horsecommunities.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'japaneseknotweedattorney.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'professorschoice.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'surfhq.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'thebannerexchangenetwork.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 (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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d46660876000004030046304402204959fe400eaa20198a87efa878db3d2c0a6b7c09f303aaf976679d499a896570022031b7abd3a24f285468776558be3edf03eba36bcea0f06cd1925228707640dc2e007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018d466608d50000040300473045022100d8cf7b6ea0d86b4b63136efbf4456f8c5c7c04eb826cbc273a499eabc1a5aa8502203307b670329346da08e840fb474a3f65ded81be1296b22b93e3a64c21bb63605
 . . . . [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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