atwell.lu
Issued by R3
About this certificate
This digital certificate with serial number 03:0c:6f:e7:6b:cc:49:d2:5f:90:1a:16:48:fe:31:be:90:51 was issued on by Let's Encrypt.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=atwell.lu
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:0c:6f:e7:6b:cc:49:d2:5f:90:1a:16:48:fe:31:be:90:51Serial Number (int): 265568992112841668183567471208086361772113
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 25:fd:42:53:d0:26:6e:7d:6a:c1:5c:79:92:13:bd:c5:11:ac:75:d5
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): e4:38:65:86:4a:e0:5f:5b:cc:8d:94:cb:fd:54:aa:74:7e:e1:65:bf
Fingerprint (sha256): 8e:85:6b:d1:f1:be:9f:e0:11:1f:4c:d0:a5:e4:12:33:86:8a:33:aa:63:c5:cf:4f:65:12:86:1c:1b:24:07:3f
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck 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
www.atwell.lu
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projects.swish-it.com
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webmail.atwell.lu
projects.nexusimprovement.com
servicedesk.solosystem.co.uk
atwell.lu
support.westhost.com
projects.atwell.lu
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----- MIIEIjCCAwqgAwIBAgISAwxv52vMSdJfkBoWSP4xvpBRMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzExMDExMjEzMDBaFw0yNDAxMzAxMjEyNTlaMBQxEjAQBgNVBAMT CWF0d2VsbC5sdTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABEKBC5cWG23GZ8af mPTJ++V1VvcAMVtBXAe0peipZwD5xqvfK9tO5NwGaZZGiT1T9+1nJCQz4OPkqvW9 LaRvf96jggIZMIICFTAOBgNVHQ8BAf8EBAMCB4AwHQYDVR0lBBYwFAYIKwYBBQUH AwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFCX9QlPQJm59asFc eZITvcURrHXVMB8GA1UdIwQYMBaAFBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsG AQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIG CCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5vcmcvMCMGA1UdEQQcMBqCCWF0 d2VsbC5sdYINd3d3LmF0d2VsbC5sdTATBgNVHSAEDDAKMAgGBmeBDAECATCCAQMG CisGAQQB1nkCBAIEgfQEgfEA7wB2ANq2v2s/tbYin5vCu1xr6HCRcWy7UYSFNL2k PTBI1/urAAABi4sEDXIAAAQDAEcwRQIhAK4F3Eo5O/j8kK/FKhtSd+HUgXKB8X5F Bxum7D3xhrqBAiAesh9e3fY7nljz1qIuZQXWBaA/OmdMlofvWaKEL0dodQB1ADtT d3U+LbmAToswWwb+QDtn2E/D9Me9AA0tcm/h+tQXAAABi4sEDWQAAAQDAEYwRAIg ZAzHu0ps55JbAIXEDvmA93IO9BDT7z3EzZmJivDGQhoCIDx8VGgvSxe4Y9scDfKt Ep4qsPS+6KkyrPfvPmVqkeqcMA0GCSqGSIb3DQEBCwUAA4IBAQBI15r4FPyjvMho vb4YOQdQkcD1CGo8P5Z8IG00XSR+tuDXa8wtVBniB0bpQO4KH5oOEfquWp6eHnxC xAFlJed+FMRpMdnooamFxwI+02VTx7lR/u4fSnn2hfMBEqJKpW2p7unIV6IsS8TO 0xk2yVPKpBHnVG7iKVF0MRtk2M520Q9ql9Gb9NXfzOCv3RGKBnonGVsgW7L2XJnE Zz4/GemRbRn4/cq4Qdhj7E9oBaAGW+j5V5MfHEiUMhCaw/qiR3wKd+5hwH680Omw urzd6OIvLeYjzh3lt1rDp+kxum/IWr5nuRBA17emmax5ojE4sdEh0bUsvQZ0cuAW cmuPs5bi -----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 265568992112841668183567471208086361772113 . . . . . . . . [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 2023-11-01 12:13:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-30 12:12:59 +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) 25fd4253d0266e7d6ac15c799213bdc511ac75d5 . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b8b040d720000040300473045022100ae05dc4a393bf8fc90afc52a1b5277e1d4817281f17e45071ba6ec3df186ba8102201eb21f5eddf63b9e58f3d6a22e6505d605a03f3a674c9687ef59a2842f4768750075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b8b040d6400000403004630440220640cc7bb4a6ce7925b0085c40ef980f7720ef410d3ef3dc4cd99898af0c6421a02203c7c54682f4b17b863db1c0df2ad129e2ab0f4bee8a932acf7ef3e656a91ea9c . . . . [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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