linkcard.app
Issued by R3
About this certificate
This digital certificate with serial number 03:25:01:1a:d9:66:34:6e:6d:fd:1a:70:25:81:9a:93:b6:9a 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=linkcard.app
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate will expire on
Certificate Details
Serial Number (hex): 03:25:01:1a:d9:66:34:6e:6d:fd:1a:70:25:81:9a:93:b6:9aSerial Number (int): 273928774008449953200032994513736965535386
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 1c:07:df:34:b2:23:68:dc:54:ae:a8:3b:cb:e3:6d:d6:c5:81:3a:52
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): d2:12:7f:3d:1f:57:9e:2b:4d:83:31:19:54:2a:73:2f:09:69:b7:de
Fingerprint (sha256): 01:e5:27:ec:60:84:87:de:a9:b6:5f:3b:d8:3f:0c:c8:b5:3a:a2:3c:cf:82:43:af:51:76:47:4c:4b:77:f6:da
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate linkcard.app
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for linkcard.app
Public Key Algorithm
RSA
Key Size
4096
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
linkcard.app
www.linkcard.app
www.linkcard.app
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Certificate
The complete raw certificate details for linkcard.app in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF9jCCBN6gAwIBAgISAyUBGtlmNG5t/RpwJYGak7aaMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDA0MDYxNTMwNTBaFw0yNDA3MDUxNTMwNDlaMBcxFTATBgNVBAMT DGxpbmtjYXJkLmFwcDCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAM0Z j6ubk1HQON7EnY5DlBCUtZY9dHrPiW2LfJfsIE3KP+WpQLFlVXSdpdFYzI0I0LIL l3AY31g0/EwuUKvkNR6h0e4TijabQ9Ca5mpiaa7dJPKjSc1oaH9+9BIF2V0vBogE EFBne8MFLZyubOWgV7IDjXr/bKB1lYx4NTkunkLkmC9GqHITb5oqKFsxYMbj6NE3 t4Ya0i8Kh0XIt063+IKC8ZLhZbBgpNTgm+Bpv6KmnKxTp26p/1ttASTSZ37hz9d4 fFGpho1TOqfd8XaEG7YQLdbVcogZ3axoVEfeEqbXJca5iNNu48rVLxlBIyqdnvtF e5QDUMV0I2+QRM7kgAZr/3aGiCWpl4ONVcqw5i2ZUZZAWFTPNCD1M1ImAmo2ifJ/ n7htlaFGBluHwQm9LW46Y+pDTBcqwNuhmFAhJlw8zAjPWnjvv6+42sIRbwpQEirT WBYUm1+mmVchdWIBIvWc8mQa3oQpq4LWiwHDl4ZeU9qY0515zu//nBpmZ5vMt5QE E0mAO8afAPbt06hoPH/e8GeVYEL9iVxumxskaiw32fKdw2pSZoJbJJz7EAhO6ipU RmB9b1XeowU1P84VW3K5OXwfMalR1yiilmVCyN4NVYV4g/JyGG7nvyxlJkQ0p3UO uG4n4k9Y44PsRi95jiKSSNqg6BDtiJKmmT5j4H8ZAgMBAAGjggIfMIICGzAOBgNV HQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1Ud EwEB/wQCMAAwHQYDVR0OBBYEFBwH3zSyI2jcVK6oO8vjbdbFgTpSMB8GA1UdIwQY MBaAFBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEF BQcwAYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8v cjMuaS5sZW5jci5vcmcvMCkGA1UdEQQiMCCCDGxpbmtjYXJkLmFwcIIQd3d3Lmxp bmtjYXJkLmFwcDATBgNVHSAEDDAKMAgGBmeBDAECATCCAQMGCisGAQQB1nkCBAIE gfQEgfEA7wB1AEiw42vapkc0D+VqAvqdMOscUgHLVt0sgdm7v6s52IRzAAABjrQ/ ma0AAAQDAEYwRAIgHnmSCX+gE427flNpNlD6YKGVg1wgY+KiJ8/YAgeghjMCIE4B ei38den8Lyn2YtcfkYUqJlyzLvBLLzqXufNilLBTAHYAdv+IPwq2+5VRwmHM9Ye6 NLSkzbsp3GhCCp/mZ0xaOnQAAAGOtD+aBAAABAMARzBFAiEAsvBvXsm8bLRfjP8v QMaGWf1YdloPWd1iDgQd0cP/fEcCIE+BxUBSVSNGUVPh1Ki6i6/qn/pn3cryIpUN 1+k5Od4PMA0GCSqGSIb3DQEBCwUAA4IBAQAFo8SnkJQQr2AltfpWAzZK35BdUkgp AwPY7NnMWfkUOVULaKFzikV7M2C/9/0sZayprLUXS/jPav/IXpvx7Agt97duhSUs m/4LBQiEwLrVkN/tfqLvn6L9kl8p/2NeWA0QxYEvqorka0/oijePT3C9sZ9rIBZH AFjRRcVkGSwZM8AR6Xfkb6F8QtrX8KX9iKkRnqIEiLSG09jOpJs+G5EjLgqT14xV +fJeYuIPKCgyFWnyBdp90XkxeM6SZwYBYMZSx/ShKxKZBJ8pLHuaPiEcRAKv5y/J +X3G+DW/gaDjRUX6KI2cjuoKRre83P2Jh8HmoOsd8fqtXdT8ZPCLJrLN -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzRmPq5uTUdA43sSdjkOU EJS1lj10es+JbYt8l+wgTco/5alAsWVVdJ2l0VjMjQjQsguXcBjfWDT8TC5Qq+Q1 HqHR7hOKNptD0JrmamJprt0k8qNJzWhof370EgXZXS8GiAQQUGd7wwUtnK5s5aBX sgONev9soHWVjHg1OS6eQuSYL0aochNvmiooWzFgxuPo0Te3hhrSLwqHRci3Trf4 goLxkuFlsGCk1OCb4Gm/oqacrFOnbqn/W20BJNJnfuHP13h8UamGjVM6p93xdoQb thAt1tVyiBndrGhUR94SptclxrmI027jytUvGUEjKp2e+0V7lANQxXQjb5BEzuSA Bmv/doaIJamXg41VyrDmLZlRlkBYVM80IPUzUiYCajaJ8n+fuG2VoUYGW4fBCb0t bjpj6kNMFyrA26GYUCEmXDzMCM9aeO+/r7jawhFvClASKtNYFhSbX6aZVyF1YgEi 9ZzyZBrehCmrgtaLAcOXhl5T2pjTnXnO7/+cGmZnm8y3lAQTSYA7xp8A9u3TqGg8 f97wZ5VgQv2JXG6bGyRqLDfZ8p3DalJmglsknPsQCE7qKlRGYH1vVd6jBTU/zhVb crk5fB8xqVHXKKKWZULI3g1VhXiD8nIYbue/LGUmRDSndQ64bifiT1jjg+xGL3mO IpJI2qDoEO2IkqaZPmPgfxkCAwEAAQ== -----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 273928774008449953200032994513736965535386 . . . . . . . . [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 2024-04-06 15:30:50 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-05 15:30:49 +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 'linkcard.app' . . . . . . . . [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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 836734380225504871539500211645924641029035180872078946539377025781047718820857999871149355602839304436659055421150488787035006666616780621981073628935051266146710872240832521562742363571423161651239340906967765536399222768808432134859102262416423187216812412387461271066607302585356912334062749089716208405955788493108941937179776243991169127720226291724452159612909285990100294112814405528118976438458523613865227009527265822871635074802621559483794699115247010494567400474948832470446318533650089096331484669443915229029557660871885858305690328146244301896955552942412112107007782117184977770578674577802690548155967098726506777179696759926352328608740096703928048643864304911714299546922305922419176596015968697285167810474966787073209728544034242560704449621299869716151634999179526028728560565459038206209714751660751733070266006963910851613472142155591311302571866486630002778127000342978421168135204898167238077022345700139345141896292201244107608410189086848293967515351838018060275068966923718729679426487736436501418498373475960738445753138137256133629874803482797293266235356654878285536109050830549470319637023413584522793612554006580341690968958243388565996123459711440429394998118428449730981353764641008314023006994201 . . . . . . . . . . . . . . . . . . . . [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) 1c07df34b22368dc54aea83bcbe36dd6c5813a52 . . . . . . . . . . . . . . . . [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 'linkcard.app' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.linkcard.app' . . . . . . . . . . . . . . . . [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) 00ef00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018eb43f99ad000004030046304402201e7992097fa0138dbb7e53693650fa60a195835c2063e2a227cfd80207a0863302204e017a2dfc75e9fc2f29f662d71f91852a265cb32ef04b2f3a97b9f36294b05300760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018eb43f9a040000040300473045022100b2f06f5ec9bc6cb45f8cff2f40c68659fd58765a0f59dd620e041dd1c3ff7c4702204f81c540525523465153e1d4a8ba8bafea9ffa67ddcaf222950dd7e93939de0f . . . . [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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