cas.tsukuba.io
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:b6:68:ee:26:4b:97:49:4c:be:69:9b:fc:95:37:52:c6:bc was issued on by Let's Encrypt.
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:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=cas.tsukuba.io
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:b6:68:ee:26:4b:97:49:4c:be:69:9b:fc:95:37:52:c6:bcSerial Number (int): 323407724829826000807776963681204883867324
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 63:4e:15:85:56:5a:a4:94:02:c2:16:42:a4:a5:97:9a:38:02:57:97
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 7c:45:c5:17:0c:ab:ab:ab:7e:ae:14:bd:8f:3d:b8:42:98:2c:f6:42
Fingerprint (sha256): 33:26:a4:70:2c:da:f5:41:5c:45:49:ed:e4:20:95:79:90:c8:a8:ca:bf:75:09:0d:3d:6a:1b:31:b1:89:bc:37
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate cas.tsukuba.io
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for cas.tsukuba.io
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
cas.tsukuba.io
Other certificates including the domain name tsukuba.io
(limited to 100 certificates)
kasuganoff.tsukuba.io
cas.tsukuba.io
cal.tsukuba.io
kasuganoff.tsukuba.io
cas.tsukuba.io
cas.tsukuba.io
cal.tsukuba.io
cas.tsukuba.io
mastodon.tsukuba.io
cal.tsukuba.io
battle.tsukuba.io
cas.tsukuba.io
cas.tsukuba.io
sohosai.tsukuba.io
gaborzay.com
mastodon.tsukuba.io
cas.tsukuba.io
ridecabal.com
www.rush.app
cal.tsukuba.io
x.tsukuba.io
plaasch.nicolais.ch
nkrenosplus.com
cas.tsukuba.io
kasuganoff.tsukuba.io
kasuganoff.tsukuba.io
cal.tsukuba.io
cal.tsukuba.io
x.tsukuba.io
elph.ca
cal.tsukuba.io
kasuganoff.tsukuba.io
cal.tsukuba.io
cas.tsukuba.io
cal.tsukuba.io
cal.tsukuba.io
tsukuba.io
kasuganoff.tsukuba.io
cal.tsukuba.io
cal.tsukuba.io
www.blog.getonetab.com
cas.tsukuba.io
cal.tsukuba.io
cas.tsukuba.io
cal.tsukuba.io
kasuganoff.tsukuba.io
cas.tsukuba.io
cas.tsukuba.io
cal.tsukuba.io
cas.tsukuba.io
mastodon.tsukuba.io
cal.tsukuba.io
battle.tsukuba.io
cas.tsukuba.io
cas.tsukuba.io
sohosai.tsukuba.io
gaborzay.com
mastodon.tsukuba.io
cas.tsukuba.io
ridecabal.com
www.rush.app
cal.tsukuba.io
x.tsukuba.io
plaasch.nicolais.ch
nkrenosplus.com
cas.tsukuba.io
kasuganoff.tsukuba.io
kasuganoff.tsukuba.io
cal.tsukuba.io
cal.tsukuba.io
x.tsukuba.io
elph.ca
cal.tsukuba.io
kasuganoff.tsukuba.io
cal.tsukuba.io
cas.tsukuba.io
cal.tsukuba.io
cal.tsukuba.io
tsukuba.io
kasuganoff.tsukuba.io
cal.tsukuba.io
cal.tsukuba.io
www.blog.getonetab.com
cas.tsukuba.io
cal.tsukuba.io
Certificate
The complete raw certificate details for cas.tsukuba.io in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFVTCCBD2gAwIBAgISA7Zo7iZLl0lMvmmb/JU3Usa8MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAzMTgyMDE5MjJaFw0y MDA2MTYyMDE5MjJaMBkxFzAVBgNVBAMTDmNhcy50c3VrdWJhLmlvMIIBIjANBgkq hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAq8cbDO3GAfjqqbPPCBdPost8NMRmEubv 85gXecll7mZMH5qSfTPuB/ouFWL3tPMf1U8usWeoSUK/48yatzBGwmj1KKlkaW9M S2QkydztRp+kH8LvbzbQvGknuOLWGHBALLT17o/3DYxuA5LnXdY+vLvJWygQoFr2 N/XhnhUjcm6OaQEJpIykydfbBQGQSEuQIIw4egpgdHkYJjCOYAsXuSSggN8/FADT Cec0RzVjfFTSoJ3hV9HLE9M8MCSXjuo0AJ/MbAxq91S8XmDcRjHCCd7Zw+NjHo8c xZCQ6NqGvn3xwx8ahmmbC+CyDEcIyJJZK2Yv+qE4oS8QZfaX/RaHMwIDAQABo4IC ZDCCAmAwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEF BQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRjThWFVlqklALCFkKkpZeaOAJX lzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcBAQRj MGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlwdC5v cmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlwdC5v cmcvMBkGA1UdEQQSMBCCDmNhcy50c3VrdWJhLmlvMEwGA1UdIARFMEMwCAYGZ4EM AQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0 c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHYAXqdz+d9WwOe1 Nkh90EngMnqRmgyEoRIShBh1loFxRVgAAAFw74PjEwAABAMARzBFAiEAm2VyT0n0 S683K3njtvAKjt8KzD5E1UbD9QfjJVyRSKcCIDkzAwHYNgznJSyEH/iaqEEU5127 NqF7XvomYo6aOzvTAHcAB7dcG+V9aP/xsMYdIxXHuuZXfFeUt2ruvGE6GmnTohwA AAFw74PjVAAABAMASDBGAiEAx2IvM9KTKABvKzHIwW+9x9hTcL4XsiHQe9G30cqE wyICIQDGEEdyLOPj18243FIFcJ3UggAIx4S+8j8OvIBVD2xy9zANBgkqhkiG9w0B AQsFAAOCAQEAhP88xGKk8D9C1gnItQz9CC0eiihwz5/x7A8PlPETP/jLultZuqg7 MMcT/L3zDrJvkXua42VrObCDZ8X7mS6WurMpqD/MkpX+Orf7IQNcw6SwrcbwVCm8 /agr1lhWM++DPI+R8TqXGbcxa+563CxmeP+CttMaiVD7ZP9rHx/Az4+CTlUEbgM5 AXucNtf4FG3gFUhwE0waAu4KCbbYWe9VsOi+GhsmOsi0tXrnNJVs4qK6WlUtDfzo /qKU23e3H4Ku9kwSNoHGthOxQX+J3cQNcPNgpj8dWlv3eP/BRNeV8IzqLMLOuMRW GPeGoltnpb7Wm5SDYATWrLrQLeQm9F1CPQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAq8cbDO3GAfjqqbPPCBdP ost8NMRmEubv85gXecll7mZMH5qSfTPuB/ouFWL3tPMf1U8usWeoSUK/48yatzBG wmj1KKlkaW9MS2QkydztRp+kH8LvbzbQvGknuOLWGHBALLT17o/3DYxuA5LnXdY+ vLvJWygQoFr2N/XhnhUjcm6OaQEJpIykydfbBQGQSEuQIIw4egpgdHkYJjCOYAsX uSSggN8/FADTCec0RzVjfFTSoJ3hV9HLE9M8MCSXjuo0AJ/MbAxq91S8XmDcRjHC Cd7Zw+NjHo8cxZCQ6NqGvn3xwx8ahmmbC+CyDEcIyJJZK2Yv+qE4oS8QZfaX/RaH MwIDAQAB -----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 323407724829826000807776963681204883867324 . . . . . . . . [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 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-18 20:19:22 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-16 20:19:22 +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 'cas.tsukuba.io' . . . . . . . . [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 21684932812432339646485683289655448296763540159596927263572843107755452821772205858541782411956564211973624337617207176622427042211013286642959366491304222944727866775172072982367814387353074518963001766468903543469337743825150329977113528125897698254486215006583088920422238693934709511770745506935307541283380282216423639407749721171137985135319637461835549367631299935702939510878201137001564437372006570938688782647412537759804896865989512853861860648627621268112490228810625334887949996480090147872368112925042345727211662765214683746309439757755278105132904504583883278031982199528718312111745903516814279083827 . . . . . . . . . . . . . . . . . . . . [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) 634e1585565aa49402c21642a4a5979a38025797 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cas.tsukuba.io' . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [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) 00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a11212841875968171455800000170ef83e31300000403004730450221009b65724f49f44baf372b79e3b6f00a8edf0acc3e44d546c3f507e3255c9148a7022039330301d8360ce7252c841ff89aa84114e75dbb36a17b5efa26628e9a3b3bd300770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000170ef83e3540000040300483046022100c7622f33d29328006f2b31c8c16fbdc7d85370be17b221d07bd1b7d1ca84c322022100c61047722ce3e3d7cdb8dc5205709dd4820008c784bef23f0ebc80550f6c72f7 . . . . [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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