obt.org

Issued by R3

About this certificate

This digital certificate with serial number 04:4f:dc:14:c7:f4:cd:14:8d:34:ca:bf:71:f1:c3:ab:54:19 was issued on by Let's Encrypt.

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=obt.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:4f:dc:14:c7:f4:cd:14:8d:34:ca:bf:71:f1:c3:ab:54:19
Serial Number (int): 375623988774399629441213795227880670319641
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 14:ec:e8:3c:ad:48:df:ed:9c:56:de:4c:80:62:da:07:44:c1:c7:bb
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): e2:d3:63:37:f6:4d:49:57:68:fb:29:4a:ec:ec:4f:65:be:0d:44:b6
Fingerprint (sha256): 81:ad:a8:1a:47:49:bb:00:f8:a4:d4:3b:98:f1:02:a7:95:07:75:c7:62:72:e5:43:89:9e:38:c6:50:5e:64:3a

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
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sw.obt.org
obt.org
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secure-uswe2-1.tessituranetwork.com
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school.obt.org
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obt.org
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secure-uswe2-1.tessituranetwork.com
obt.org
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sw.obt.org
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www.school.obt.org
school.obt.org
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www.school.obt.org
www.obt.org
obt.org
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school.obt.org
school.obt.org
obt.org
school.obt.org
www.obt.org
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www.school.obt.org
secure-uswe2-1.tessituranetwork.com
obt.org
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school.obt.org
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school.obt.org
www.school.obt.org
www.obt.org
www.obt.org
secure-uswe2-1.tessituranetwork.com
www.school.obt.org
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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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwsu8HkS6TxJqJSakoNSE
7T+gN2N/pN+xHkrx2yrvSPjLUBr0ewTxotpTz5t4NoGEQPwqSNYmSAaqcUk4aWa3
Ce6Y66pRAfevg6GBmN1ltjRQxtmV1F6wXqy1jwEBSa74gFkWEHE1SdaNn8UlDWhh
N9XtpS7PMN60tBdXcu9/7UmZma0NoqGd9Nl/8zG8295vpMYQY8f+Wcs4q8n/xiyu
Crw2I/ZFZpC0m5In+VFdQb44YZv3fDfpbAjYC6FaJk0kkQe6ShV51MJBKNh9s7gC
DmpFL+8P6h6J/E1Ofr0TQ7jVlL40obDh+UHs9JcK6oSH69qS4nmL5/pNboWF2fX0
mQIDAQAB
-----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 375623988774399629441213795227880670319641
 . . . . . . . . [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 2023-12-25 20:28:21 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-24 20:28:20 +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 24590696555867575274133447317554788674151053780297213427794049725069811502578337446222335579577179990427348003784512595537145485155501898689585364094515132105841311008075508058753993236105858153310427000756587041669735906881973507462945967176066745763556573847595151214475953823321811073836855499361458504612477436061970322365236039251118821485441718479007704979477501585016359514999901534830050416210196974628732546415455819242307490588525630903843807069786860691653469072344950629047883550878596526644630202955813061315821993961734520594262595631483632518418177509586885969282744015422662397646695094961780680946841
 . . . . . . . . . . . . . . . . . . . . [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)
							14ece83cad48dfed9c56de4c8062da0744c1c7bb
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018ca2e0f6a3000004030047304502200b0cd609e169edc9363ca726e48ae79cd880a05fedd8d2981d0ecbe58adf36f0022100f805aed5b047a6f7bf71139a25b1d68de66a2229a847dcb51e9594b273dd3b2c007400a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018ca2e0f6ce0000040300453043021f0270339645168d48668a5dd2dfde8d4abbca1369604f5f2a41fabef819f91d02202381f91ce3d00f7ef715c1e5a0b4341db3ccc660993b9dff8cfe0413644aa5f1
 . . . . [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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