linkcard.app
Issued by R3
About this certificate
This digital certificate with serial number 04:10:ed:93:c6:69:70:ea:61:6b:8d:5f:b9:21:37:b4:76:bd 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=linkcard.app
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:10:ed:93:c6:69:70:ea:61:6b:8d:5f:b9:21:37:b4:76:bdSerial Number (int): 354209455924686235940273005363764665808573
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: bb:6c:f3:c6:73:33:19:de:c7:cc:96:ff:b2:72:0d:c5:9b:33:6f:6c
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 78:a6:27:db:27:62:9f:17:94:34:9f:20:76:74:9a:65:0b:a4:e8:e2
Fingerprint (sha256): 02:70:a2:de:e9:34:12:10:77:b7:3a:29:5e:a8:ca:c9:73:12:22:82:6a:ee:30:e4:33:b4:dd:c0:3e:dd:50:a2
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----- MIIF9zCCBN+gAwIBAgISBBDtk8ZpcOpha41fuSE3tHa9MA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDAyMDYxNjIzMjZaFw0yNDA1MDYxNjIzMjVaMBcxFTATBgNVBAMT DGxpbmtjYXJkLmFwcDCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBALA2 ss3PTqsUhfhWPUaPDmvNIyrGHKdV81VrJ3aGmO5YhCKzkxATaxrSnLb/1rzfnweE rDSU7A1PFApsQ81WV1b7zbpiCXjuZUriObR5WOZrvo8KDvYB0od848vE903gpSWj TBz1s/NGMJ00XESsurdR3/6GhNXQXwOCB6/86STdyuqbVtGltMludcQpBNEAYCvK LnpNR2xYEa3fhyr0rnPF0p/77Itp3TMmcgiVA6Sng0iM+Puum9MyeojPV7mDZTqx AJLFnIWO5moejbgSGdXmsgGywacof1qKXLKW7/v2dOTCK1yoyb1vWqM75bpdHbAC CKm2zWuxG1wC5dd11MHFjuzIXzjdEYKwUwDxx8luTw2COdLY4hDcKuFco/S0Hvzb vI6ztKAsTv2Sz3J4Q8Ynd8AljRul/pi3r9pr1uwRpsARlLEVGEqwAjg1dTjqDNzH TR5DUwyeLznE8F0gEccYs81WuZOJGI+XdJTZr9ZEA822q+o/LPYMyfOSd0rD6CtK yz2xs0OGLiSp/HD50vTk7I+EP4nnu5dNsym6mbkl/1lAV+D20iUewK5h+IK8BDL4 /25YFbjBRBEJPTjb45xb5VzpgY9Z6ueUxJ4t/e9idf7Az4UXTIWdjwcoBTRGqFnv NUKi4ZGPz2tDXnvQ7t+fu0Qa+pteonmk25ypQh5FAgMBAAGjggIgMIICHDAOBgNV HQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1Ud EwEB/wQCMAAwHQYDVR0OBBYEFLts88ZzMxnex8yW/7JyDcWbM29sMB8GA1UdIwQY MBaAFBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEF BQcwAYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8v cjMuaS5sZW5jci5vcmcvMCkGA1UdEQQiMCCCDGxpbmtjYXJkLmFwcIIQd3d3Lmxp bmtjYXJkLmFwcDATBgNVHSAEDDAKMAgGBmeBDAECATCCAQQGCisGAQQB1nkCBAIE gfUEgfIA8AB2ADtTd3U+LbmAToswWwb+QDtn2E/D9Me9AA0tcm/h+tQXAAABjX9y MV0AAAQDAEcwRQIgM5+5KgwvS8sKz6z+E859BuSRC/Y/b+OnfhH4ZmqJRmgCIQCe 9+EXW38Gx8e41fBWLTdmTB3wdbm1T+2HOuQBgBd4ewB2AHb/iD8KtvuVUcJhzPWH ujS0pM27KdxoQgqf5mdMWjp0AAABjX9yM6cAAAQDAEcwRQIhAInjym5nJfUuachU FW7pZOSeq0q6smK5SiL7aUO/rQliAiBakSkmGfaDfSaAt9ZjQhNcCTRtTiMB3bLR 1xrPiAgjrTANBgkqhkiG9w0BAQsFAAOCAQEAiRM3/B84hTwjC+dv+r0YtlYCdiK0 QvH2xoYDMWiz9xX2ZP1QARlZ2q5dTG/4Lthk3rzNh4HYUiLpTVCBVv45KWeldwVY rb3wjrgxWkPZqkcV/XOX8KbZy/zxBHNkzzW63zl+KbNYKXaCsVTs6PbPIr6nkpO2 RKRLv6SyTUcwbfiySC2rAVD8OsYg6eVA/mIGzCaimdOdJAB41wthMTCJeyOFyuEE 3LhPbxe/JdAdC/Dd/rrb3w4DrZ3wLy/uAwXpq6h18C8WNo7lSQLAnoQ6Q4/A1PKD d66h+MhdSE+t0uEnMz88osAU1wL6Kyzc+x8MQMJ92rTIk1Ep4DNtMp84GQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsDayzc9OqxSF+FY9Ro8O a80jKsYcp1XzVWsndoaY7liEIrOTEBNrGtKctv/WvN+fB4SsNJTsDU8UCmxDzVZX VvvNumIJeO5lSuI5tHlY5mu+jwoO9gHSh3zjy8T3TeClJaNMHPWz80YwnTRcRKy6 t1Hf/oaE1dBfA4IHr/zpJN3K6ptW0aW0yW51xCkE0QBgK8ouek1HbFgRrd+HKvSu c8XSn/vsi2ndMyZyCJUDpKeDSIz4+66b0zJ6iM9XuYNlOrEAksWchY7mah6NuBIZ 1eayAbLBpyh/Wopcspbv+/Z05MIrXKjJvW9aozvlul0dsAIIqbbNa7EbXALl13XU wcWO7MhfON0RgrBTAPHHyW5PDYI50tjiENwq4Vyj9LQe/Nu8jrO0oCxO/ZLPcnhD xid3wCWNG6X+mLev2mvW7BGmwBGUsRUYSrACODV1OOoM3MdNHkNTDJ4vOcTwXSAR xxizzVa5k4kYj5d0lNmv1kQDzbar6j8s9gzJ85J3SsPoK0rLPbGzQ4YuJKn8cPnS 9OTsj4Q/iee7l02zKbqZuSX/WUBX4PbSJR7ArmH4grwEMvj/blgVuMFEEQk9ONvj nFvlXOmBj1nq55TEni3972J1/sDPhRdMhZ2PBygFNEaoWe81QqLhkY/Pa0Nee9Du 35+7RBr6m16ieaTbnKlCHkUCAwEAAQ== -----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 354209455924686235940273005363764665808573 . . . . . . . . [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 2024-02-06 16:23:26 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-06 16:23:25 +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 718889036514264855791129452482520554133835563693099869968753676804462043878864241241523121228080364581657774132472399614355906692644762249944866774197265603788676036874324879186017247319489163384231771920458391068324077320832899746071328809452204135222051835723228955834385058784512512584218606839518003419256223394093998087403870807780869572578490595492924618740018075793610213245094560070203818096307518423937242712487018327172981826092000587356838360536789605677347605384153015713006135980624629111277031539155357956153890388230248619345443409994237199167966879083141965875390199108636551471097606595416446773430760519781093780376743799845242627890020535461333793419019056632794760133666835879386819587569291649344101719538954478692275682831625924525869461379352666339083617895423903670614709935339128479905386043368220989184086773920155056950005961930187594665146320905969657458735963632111041757906035583017058522458005743499650897021344499224161205842968664383853056398121818709268028236882988132513999740449944506850988091325248434966614669802317231576276777586567191058650687537700083535905836086058590288118036899042632358805849998622152602234037841036355394353491070980838120029288262411490909135296329671218570765678026309 . . . . . . . . . . . . . . . . . . . . [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) bb6cf3c6733319dec7cc96ffb2720dc59b336f6c . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d7f72315d00000403004730450220339fb92a0c2f4bcb0acfacfe13ce7d06e4910bf63f6fe3a77e11f8666a8946680221009ef7e1175b7f06c7c7b8d5f0562d37664c1df075b9b54fed873ae4018017787b00760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018d7f7233a7000004030047304502210089e3ca6e6725f52e69c854156ee964e49eab4abab262b94a22fb6943bfad096202205a91292619f6837d2680b7d66342135c09346d4e2301ddb2d1d71acf880823ad . . . . [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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