obt.org

Issued by R3

About this certificate

This digital certificate with serial number 03:53:31:e7:5b:cf:c1:c1:fc:ba:9c:b0:da:db:aa:7f:ba:a3 was issued on by Let's Encrypt.

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=obt.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:53:31:e7:5b:cf:c1:c1:fc:ba:9c:b0:da:db:aa:7f:ba:a3
Serial Number (int): 289646627704245883526098438543561981934243
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: e8:c7:f1:db:eb:ad:99:80:54:5a:22:41:20:25:29:05:e3:5f:dd:c4
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 09:51:b5:50:3a:ba:ac:9d:b7:30:64:f6:fd:da:20:af:32:d0:96:59
Fingerprint (sha256): b7:63:eb:a9:0a:0d:a4:ab:95:f7:f9:28:0a:4e:61:53:ee:17:47:88:7c:78:dc:9f:3e:37:95:17:81:99:e8:b2

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

Revocation information

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

Check the revocation status for certificate obt.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for obt.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

obt.org

Other certificates including the domain name obt.org

(limited to 100 certificates)
www.school.obt.org
secure-uswe2-1.tessituranetwork.com
mail.obt.org
school.obt.org
secure-uswe2-1.tessituranetwork.com
sw.obt.org
obt.org
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
school.obt.org
www.school.obt.org
www.obt.org
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
obt.org
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
obt.org
secure-uswe2-1.tessituranetwork.com
sw.obt.org
secure-uswe2-1.tessituranetwork.com
www.school.obt.org
school.obt.org
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www.obt.org
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www.obt.org
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obt.org
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www.obt.org
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
www.school.obt.org
www.obt.org
obt.org
secure-uswe2-1.tessituranetwork.com
school.obt.org
school.obt.org
obt.org
school.obt.org
www.obt.org
secure-uswe2-1.tessituranetwork.com
www.school.obt.org
secure-uswe2-1.tessituranetwork.com
obt.org
secure-uswe2-1.tessituranetwork.com
school.obt.org
secure-uswe2-1.tessituranetwork.com
school.obt.org
www.school.obt.org
www.obt.org
www.obt.org
secure-uswe2-1.tessituranetwork.com
www.school.obt.org
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
school.obt.org
www.obt.org
secure-uswe2-1.tessituranetwork.com
obt.org
obt.org
obt.org
obt.org
secure-uswe2-1.tessituranetwork.com
obt.org
www.obt.org
school.obt.org
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
school.obt.org
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
obt.org
secure-uswe2-1.tessituranetwork.com
www.obt.org
mail.obt.org
secure-uswe2-1.tessituranetwork.com
www.obt.org
secure-uswe2-1.tessituranetwork.com
obt.org
obt.org
secure-uswe2-1.tessituranetwork.com
obt.org
secure-uswe2-1.tessituranetwork.com
secure-uswe2-1.tessituranetwork.com
obt.org
mail.obt.org
www.school.obt.org
secure-uswe2-1.tessituranetwork.com
school.obt.org
www.obt.org
obt.org
www.obt.org

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtGc3XLPMU8+WGn9J3OpT
YrWP/mPpr8+URYybFkAVa0PHhCaY1IWyI3Yiei21kQ8+TLVVDPvfjkqLB7yj5itA
k1sRMnxmUDo7WrdtKbzr5FiR8/3W4nECr2tFN1S5YYX17WuSqomCVAJdC7faghWI
JIB3NmId/4wy6F5Kqys5P0xLKFbQ2Mc7+d9TrGStY+XFJu0ykZeImSd2ZXNpaIME
gYGbTkbiQlIkugOdMlMnrS0VE8695OVspNQnOfXiGvQtUHgelhHuiaPZMThkbJ6l
UIv246MeaxNpCwUW+savlv3zwAsGmEfFLP0EzjDT5uPHXOFsdK+Fk+U5hoakaZ4k
7wIDAQAB
-----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 289646627704245883526098438543561981934243
 . . . . . . . . [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 2024-03-02 20:26:49 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-31 20:26:48 +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 'obt.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 22773792727834400723000204345025724669751822368661746148004604495714279501008088361521905487225924364865161808646706439867356193012903815228160692956310037010568810714059961909413501708113288590054455886282430563925073763807448249040029879977407403929076052308287803583548630582729980795745780856391519640750309426348507706914036989665224699505604074958951733465210104852156866441835887416464427263859943587471057688148372972284790871156819609674500791878660328823707582404370621469119851410701189839925361483496110434960494384529674003028438570854524898552645137308973019835944051737775960816779459921130649051604207
 . . . . . . . . . . . . . . . . . . . . [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)
							e8c7f1dbebad9980545a224120252905e35fddc4
 . . . . . . . . . . . . . . . . [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 (11 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'obt.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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f20077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018e010fffef0000040300483046022100e52f4425d217f15cdd9ccd69554f0c32df81cd6afb6867c0bdb62d68b1c493e102210084eb26a029bde2b384f66d33c7b9727f6f160252ec79ea27dac6ea7da49a3c4300770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018e011001e10000040300483046022100c9d254fb4982add45ce4c2c11aed8e66687f2190b9d042c275012a0638f3ea9f022100e990199b1f536c16a1896155aa114c5a9014492248af3bad693b2826f79d9be2
 . . . . [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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