stack-up.org

Issued by R3

About this certificate

This digital certificate with serial number 03:b1:7b:a9:bb:e1:12:2d:c4:6a:d6:41:f1:86:df:86:4e:a0 was issued on by Let's Encrypt.

With 2 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=stack-up.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:b1:7b:a9:bb:e1:12:2d:c4:6a:d6:41:f1:86:df:86:4e:a0
Serial Number (int): 321731213092580043519090530452371222711968
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 7b:dc:90:26:56:84:4d:c8:1b:84:22:61:03:35:07:b1:e4:e9:49:44
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 5d:b6:5d:66:bd:87:26:9b:2d:4e:60:1d:e6:45:ca:54:11:73:ee:58
Fingerprint (sha256): 7c:02:1d:7d:3d:c5:89:cf:57:f9:53:c6:f5:ee:0e:65:a8:2a:f9:e5:fc:15:7c:82:20:36:70:cc:c2:59:ba:d2

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

Revocation information

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

Check the revocation status for certificate stack-up.org

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for stack-up.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

stack-up.org
www.stack-up.org

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mask6.classy.org
mask6.classy.org
mask6.classy.org
mask6.classy.org
mask6.classy.org
mask6.classy.org
stack-up.org
mask6.classy.org
stack-up.org

Certificate

The complete raw certificate details for stack-up.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAujso3mz2x9oSUcmTGiSL
1Ha1WPygpTBT832KURtdD4U0s+tFopjvLtwsbJ8c+o2CFYtNLCZfoT19cLK/YOLk
lQ+ST6Q4l/3S5LIcRuHxhh+Us1UJC0SLaaGaNL4hzhFc9P5FDD4WmGwry/NQTf+G
M+ItJSsThuZGpsvQos0JXjYKN6Vo5GQoQ/mm3HIYqtjluSpYKU1NOqti/ZKzk0g0
+RSiiNpFkTgbkg+BnTCq8lu61GNB5ymzEIeI92v3Zf2szN7iBOqXpAYLz7TtvIv5
nvuzNyYooyB/V0U7nmFo/V5uuuLC6X2x1MC3MSZda2p6FtnCoZC74n6DrR9HkTtx
aQIDAQAB
-----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 321731213092580043519090530452371222711968
 . . . . . . . . [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 2024-04-09 04:01:37 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-08 04:01:36 +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 'stack-up.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 23509497431398348893034254675006756202349660467251263833158520529099332323789710421674446793463794265567639921453256483184624596173697586409597646207561683167399395716508661566719227421948421975113284352881187189186471251212708215834864246134959396316003112095874798139222898288131386645645981061299762436913299398145709808075978111218738003569068646057623789625127121608152626587934763659739835451428456921713917851312208821214724682694868931489192355466503038947800523988842171123019345854510873454548633442154330510169535866195530237508633812266645645444370814510005080229345879146398055528009782710784806549680489
 . . . . . . . . . . . . . . . . . . . . [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)
							7bdc902656844dc81b842261033507b1e4e94944
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'stack-up.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.stack-up.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018ec13bacec0000040300473045022017ad0a00e298b001b264ab8bf8aa1729bee0edf995aab80a36c729210dcc343f0221008fd4a6c10580fc6e35755803b18b1f1e929a323673d36aac4ee7e07872b3a3f10077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018ec13bad4d0000040300483046022100d08b1d2afa485750bc7ef99ff341c132cd23b7252d72f39094aeabfeec73dd2002210096f56f0fdce7eb8574d522f058369f9f627de08c8582ab1ded37d23f5dba0b07
 . . . . [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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