atwell.lu

Issued by R3

About this certificate

This digital certificate with serial number 03:74:fd:88:41:82:18:aa:15:a4:03:aa:21:c4:f3:97:c9:2d 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=atwell.lu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:74:fd:88:41:82:18:aa:15:a4:03:aa:21:c4:f3:97:c9:2d
Serial Number (int): 301146614522079864778058510744784796633389
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 7e:4c:f8:65:a8:a1:51:da:fe:eb:19:e6:66:59:81:b0:ff:a7:d3:23
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 5c:4f:62:c1:6c:15:86:3c:33:6b:f7:da:bb:ce:07:64:37:84:57:da
Fingerprint (sha256): 12:20:48:0e:c7:2b:d6:5b:56:d0:3c:1c:32:57:08:8d:e5:45:da:cd:cf:ab:b5:79:33:eb:22:fb:fa:09:07:7d

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

Revocation information

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

Check the revocation status for certificate atwell.lu

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for atwell.lu

Public Key Algorithm

ECDSA

Key Size

256

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature

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

atwell.lu
www.atwell.lu

Other certificates including the domain name atwell.lu

(limited to 100 certificates)
atwell.lu
atwell.lu
webmail.atwell.lu
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atwell.lu
support.westhost.com
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projects.omerosystems.com
atwell.lu
service.idenprotect.com
atwell.lu
atwell.lu
it-support.cairo3a.org
assist.east-diagnostics.com
atwell.lu
atwell.lu
atwell.lu
support.westhost.com
projects.swish-it.com
hr.growthmode.co
atwell.lu
atwell.lu
autodiscover.atwell.lu
service.idenprotect.com
atwell.lu
atwell.lu
atwell.lu
atwell.lu
support.fortress-cybersecurity.fr
mail.atwell.lu
atwell.lu
atwell.lu
projects.atwell.lu
atwell.lu
projects.atwell.lu
podrska.east-diagnostics.com
atwell.lu
projects.samepage.digital
webmail.atwell.lu
support.fortress-cybersecurity.fr
projects.atwell.lu
atwell.lu
projects.atwell.lu
mail.atwell.lu
atwell.lu
atwell.lu
servicedesk.solosystem.co.uk
projects.spitzbub.org
work.goboom.group
projects.lockeandpartners.com
atwell.lu
atwell.lu
projects.yarvis.de
mail.rtfc1.reachthefirst.com
atwell.lu
projects.swish-it.com

Certificate

The complete raw certificate details for atwell.lu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEQoELlxYbbcZnxp+Y9Mn75XVW9wAx
W0FcB7Sl6KlnAPnGq98r207k3AZplkaJPVP37WckJDPg4+Sq9b0tpG9/3g==
-----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 301146614522079864778058510744784796633389
 . . . . . . . . [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 2024-05-01 08:16:41 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-30 08:16:40 +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 'atwell.lu'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits)
				000442810b97161b6dc667c69f98f4c9fbe57556f700315b415c07b4a5e8a96700f9c6abdf2bdb4ee4dc06699646893d53f7ed67242433e0e3e4aaf5bd2da46f7fde
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							7e4cf865a8a151dafeeb19e6665981b0ffa7d323
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'atwell.lu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.atwell.lu'
 . . . . . . . . . . . . . . . . [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)
							00f1007700dfe156ebaa05afb59c0f86718da8c0324eae56d96ea7f5a56a01d1c13bbe525c0000018f33711d760000040300483046022100e9d194f82dbf9d89065c8b85cf737194a844a481061e8cd537fa87787d63537e022100afe5d108ccbc734cb0de936a46858a5e3fb6f795242fa0cc9cb43054803c334100760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f33711caf0000040300473045022100895c59842970926400a3d9aaeb473d5137d5c26535120a86904bb1bf87176b4702205580e10a5f607756867342c7a681e95e6e143013410ba0333aa2768a1b420fa4
 . . . . [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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