www.sigmathetapi.org

Issued by R3

About this certificate

This digital certificate with serial number 04:00:63:7c:56:8f:ea:ff:94:78:8d:36:b5:3a:fe:5b:1e:c4 was issued on by Let's Encrypt.

With 3 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=www.sigmathetapi.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:00:63:7c:56:8f:ea:ff:94:78:8d:36:b5:3a:fe:5b:1e:c4
Serial Number (int): 348581382899123733199638690175730478423748
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 97:b8:cc:54:9d:e1:01:98:15:21:31:ea:6f:54:bb:ae:0f:9b:17:54
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 56:14:ff:fa:48:23:ed:00:49:12:cd:8b:32:de:85:1c:b9:be:4d:98
Fingerprint (sha256): 96:4c:94:17:7d:4e:23:0d:ec:34:10:68:27:ec:6b:c9:a5:05:b9:fe:e7:fd:9d:55:13:a9:8d:8a:69:ac:da:45

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

Revocation information

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

Check the revocation status for certificate www.sigmathetapi.org

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.sigmathetapi.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

sigmathetapi.org
www.sigmathetapi.ca
www.sigmathetapi.org

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvCXol5+I3IoOXWJaBSW1
ogv7BoqXCud6yJko9EnYvXb4fJ788b5q3TRtn5ddZhI0qVQIVXegK9Q3NJqEfJdj
A3x3hCG488pCwFLR9lqf0710Kw1FFzX5plvSCtxSsZ3dftoFshMAMqX0gGHSirnX
mYIwhqG5g99jBDcfFuj+NxoYR4h+OPY/M5mAf0KG6TkTAcheaSp7sMRc9vZNvyVk
8QPsCrAX5VsYRKHKjstGqPovGgeWy2FBa/G/ZleqU2E7Fz1cM7SE5Fny0AlIMVd6
1bHku34GLwSm07pG5wu5uMk7nQXt+6FQ2WE3LGxvNXF7gggfWZfumXvhS5H+5Vxp
SwIDAQAB
-----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 348581382899123733199638690175730478423748
 . . . . . . . . [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 2024-04-29 19:17:51 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-28 19:17:50 +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.sigmathetapi.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 23751494743036262957767581826920824841251463371034153355247598340922465168743771764074697643290711211955090910330434238056020038493205342760333469268717739326760845968631092038708723357683857866057376202847697938126428616131061040600257418991219745010328283486443337207787613118425367324099775077215142799888626227985412766467054021287220183758153161449058024036388742541222488775359623345155345402395488497111364386232443130235372616146635685961573666113263979365402538412259929920074715584940500576602340237155671271191929297564766219167845253004058904560046410086148140461710590191264449238555603525853751298255179
 . . . . . . . . . . . . . . . . . . . . [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)
							97b8cc549de10198152131ea6f54bbae0f9b1754
 . . . . . . . . . . . . . . . . [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 (63 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sigmathetapi.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.sigmathetapi.ca'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.sigmathetapi.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee00750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018f2b81b657000004030046304402206cb7085f1e52ffecf7c39e1ea3a611018e9c55154052e53990bd87f4fc0965480220530930b49a597b69c34eef088c4c524d8cd51fd06e249c3b73a82293196ae5e7007500dfe156ebaa05afb59c0f86718da8c0324eae56d96ea7f5a56a01d1c13bbe525c0000018f2b81b6ec0000040300463044022013dd4921b3257a1299ecadaf32e5a45af0e7d922b106a15546f34128fc92ca4f02207d2fcb12aef6fdee97a2e066bea69c9c778b85da99c0ee0ad461d3f7be77c149
 . . . . [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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