stack-up.org

Issued by R10

About this certificate

This digital certificate with serial number 04:99:1d:94:00:2e:93:2b:f5:68:b7:fa:11:f1:f9:59:54:40 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): 04:99:1d:94:00:2e:93:2b:f5:68:b7:fa:11:f1:f9:59:54:40
Serial Number (int): 400551661941447440126016793163769073718336
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: e6:b3:47:e7:68:31:e0:f0:81:d2:bf:eb:e0:74:c8:84:57:b3:f5:5b
AuthorityKeyId: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (sha1): fe:ed:a4:0b:95:3c:39:67:85:f0:0a:15:7d:ca:39:11:24:ea:ad:94
Fingerprint (sha256): d3:a0:fa:ed:25:b8:b5:8f:ed:4c:e2:62:d2:e8:9d:b0:6f:d0:d6:7c:2d:12:1a:64:29:c7:b0:82:65:ea:f0:c5

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation information

OCSP Server: http://r10.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
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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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoPIEdIshkRltOOS7WsJg
oqyd980GrbI2uZzNxbMrXN+VOLvMaIFhQLX/vmgSPZBJ/8ho5A4L2exrFPre2aKb
P1SwScE+76IYADZ4J4pB9v7s+eHzFuILmg1a9EN7s8WV9Av6FdHzIZPraicwooMl
dq+Q0iIAW7XOgHu6zefBmxHU/2MfGjcbfU6gVR7Enn19sBwBurCrJeoc6USs3Aps
DW+NCY4UP8EkEWJnYmCjqO6BW+SxpREVHiEzJ7uzayou2GHegrVShgWzuaWGoxrw
Qt27j/1RsStqmwdtVuH3AhFRgovWaiO7PS2VMFS5MUR9iOpaf2NhEu6I04XZGydD
AwIDAQAB
-----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 400551661941447440126016793163769073718336
 . . . . . . . . [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 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-07 12:09:36 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-09-05 12:09:35 +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 20317472024125799013317619575045265294867989740974957776967854970454103199955973087985388241160739205010891287715711396622388243650990207543669840967486512544818537727051430005245493412578585955288379951493745257276600055108223315715573556546647306189296279115373615757475094175807216040120764504307589559682583666850076336585088066114765066907379533483895138269420313571257428166996444456112359574365506698256373411352624123972157867227644135960139061220550154947166315984879589407609457098167730406616140599017992504893823596720840202745771140545093460188563581675310632403757328683188100932945620672810643322520323
 . . . . . . . . . . . . . . . . . . . . [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)
							e6b347e76831e0f081d2bfebe074c88457b3f55b
 . . . . . . . . . . . . . . . . [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 bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [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 (75 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://r10.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://r10.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)
							00f10077003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018ff2d1a7080000040300483046022100b6ec3fb33ed583d4a82c5fb078496fdef66d48cb3c285e7bd75f42ecd17e247f022100f620f84eea3cd2eec727418dc678b6bab52622d1201d44ed5584ae4d75ca7d7b007600dfe156ebaa05afb59c0f86718da8c0324eae56d96ea7f5a56a01d1c13bbe525c0000018ff2d1a7e1000004030047304502201c65c592ff45e938ea5b4f246ee81499b5c1f35b319f9dad07808637c0779dfc022100b962032e1bba08b1bb4512019be827d73baf123ae4c2cbff957ef1d324697d6a
 . . . . [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)
		008a460568383fe2603a6998a82c2b49ab7d348e93e19658b6ee302fd3c3fc27db395522250529a93bf2cf20df7343bd352a53132a5d41fb1b00457d14dc4ae91b3fc633e8ae7f9670cbff0162cc3ffdf08918e5d151a035823bdfd000fcbeb273b2b42708263cc2d5028a1aa3221b6ad27090e47aa7a103b69054ff8dc642745bcbb5b534808d88b1bd9e482dca4a3d5ababda4a9222a6f653b6e8e5c719914f72cddac2db140a189e5247d4fca28335ebacfb18630f4a814415f0be07d1a97dbf4083488841d52c9f5a3985bd78b4b63368034a7206354afa02ca80861f5511d2fc07cd91cc7cd9523888622ba1598e8d34d76cb54917dd1f71296c03f25f9c4