www.polygoneducation.com

Issued by R3

About this certificate

This digital certificate with serial number 04:c5:c8:0b:95:06:3c:8b:e9:e5:42:01:3b:c8:e8:ff:57:3d was issued on by Let's Encrypt.

With 4 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=www.polygoneducation.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:c5:c8:0b:95:06:3c:8b:e9:e5:42:01:3b:c8:e8:ff:57:3d
Serial Number (int): 415750675747461429111468208302907543476029
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 32:af:2d:b3:a0:b5:a7:b6:cf:e5:84:a0:69:91:1d:25:96:06:51:99
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f0:60:28:7c:0a:4d:32:da:07:19:84:46:42:06:99:6b:48:cc:84:c3
Fingerprint (sha256): c9:85:0a:cc:d8:b4:20:a8:d6:ff:e4:ba:15:6b:43:8e:6a:96:f9:d9:65:79:f6:a5:a1:f6:61:6f:fb:31:e1:eb

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

Revocation information

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

Check the revocation status for certificate www.polygoneducation.com

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.polygoneducation.com

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

formularios.polygoneducation.com
polygoneducation.com
www.polygoneducation.com
zonaprivada.polygoneducation.com

Other certificates including the domain name polygoneducation.com

(limited to 100 certificates)
plataforma.polygoneducation.com
plataforma.polygoneducation.com
media.polygoneducation.com
tienda.polygoneducation.com
tienda.polygoneducation.com
tienda.polygoneducation.com
www.polygoneducation.com
tienda.polygoneducation.com
tienda.polygoneducation.com
tienda.polygoneducation.com
www.polygoneducation.com
tienda.polygoneducation.com
plataforma.polygoneducation.com
tienda.polygoneducation.com
reuniao.lugaresurbanos.com
plataforma.polygoneducation.com
plataforma.polygoneducation.com
www.polygoneducation.com
tienda.polygoneducation.com
media.polygoneducation.com
tienda.polygoneducation.com
www.polygoneducation.com
media.polygoneducation.com
tienda.polygoneducation.com
tienda.polygoneducation.com
dev.polygoneducation.com
www.polygoneducation.com
plataforma.polygoneducation.com
plataforma.polygoneducation.com
tienda.polygoneducation.com
plataforma.polygoneducation.com
media.polygoneducation.com
www.polygoneducation.com
media.polygoneducation.com
tienda.polygoneducation.com
tienda.polygoneducation.com
tienda.polygoneducation.com
www.polygoneducation.com
media.polygoneducation.com
plataforma.polygoneducation.com
media.polygoneducation.com
media.polygoneducation.com
www.polygoneducation.com
www.polygoneducation.com
plataforma.polygoneducation.com
www.polygoneducation.com
media.polygoneducation.com
meet.polygoneducation.com
tienda.polygoneducation.com
media.polygoneducation.com
www.polygoneducation.com
media.polygoneducation.com
comunicarte.polygoneducation.com

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyf+4SC8RcsiHxB+EOraj
8Z+EGYaiIxl2uHXI9dHofliCnLsE+z8ePdsYXpnHegOw5s1CbSMKIYmFO3ouPvAR
zv1soZKFl+ovPU96sWwUc6y++PkgWuxvFFKAQ/2x+ZFOi7a4C1jZ+BgamNYm6myz
yCuQRniQ/mas6uaEwg1voB0l84RobvaxFn/5GyuA9hRxzKIy5l32DKToanKAQqGd
0bdzCBfeQD+nrunjxXZIPnKdggT0DnqTV22NYZoq0VxXpVIULx1qKNrgTnRTvaHn
GnYWVveQmW8qTkUAmt9mRb8HDa05s3zIH5RO7ZnppOry/yEGnVWTWVO+MQCD0wC6
UwIDAQAB
-----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 415750675747461429111468208302907543476029
 . . . . . . . . [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 2023-10-28 08:54:04 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-26 08:54:03 +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.polygoneducation.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 25499999456739277125814385990254651721987828855765397418184547394243536363899808447218949963809369616893767974170469384880000271602318917083753216106103791293449354808302729393025194747037359380414220582121759040103521374851667346256172636316064165351590710524682603103773099404901215606661921988088063041507228953755805475544420555342055339185329434391983072008639931792797530410483042939901034801066963406032432125961779210363248030149138653665555967589871291625188405068933237721959221395560562429682310256708210760303665303990251930822679078876696329145341445623652477607296325250884872949150223369972191516998227
 . . . . . . . . . . . . . . . . . . . . [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)
							32af2db3a0b5a7b6cfe584a069911d2596065199
 . . . . . . . . . . . . . . . . [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 (118 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'formularios.polygoneducation.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'polygoneducation.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.polygoneducation.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'zonaprivada.polygoneducation.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)
							00ef007500dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b75b47f02000004030046304402200ab065aaeec2976d2f7fab5d58a6189066e76bff30e423243d2caff6737521f00220791b00df966b06459f13e539df6d51a8e472ddd5a5d789a5c7344f10e41590170076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b75b47f3d0000040300473045022100af96532d0b428b045b2c272bc11fada4fdc94567ccf7e552d2a283b7624a578802201003bb355618587487d9047287f807f49ba62a07973a1e2186332365d7012bc0
 . . . . [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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