Welcome to OCSP Checker.
Author: coeurl (
@debiru_R
)
This is test page for
OCSP Stapling Test
.
Test URL:
https://www.sustainability.k.u-tokyo.ac.jp
Each APIs:
https://ssl.lavoscore.org/api/sslcert-expires/?q=www.sustainability.k.u-tokyo.ac.jp
https://ssl.lavoscore.org/api/sslcert-expires/ocsp-stapling/?q=www.sustainability.k.u-tokyo.ac.jp
https://ssl.lavoscore.org/api/sslcert-expires/ocsp/?q=www.sustainability.k.u-tokyo.ac.jp
And you can
check your domain name
.
#
Certificate of
www.sustainability.k.u-tokyo.ac.jp
{ "serial": "07D59F55C56EE001CA0C6F977AD954AE", "OCSP_serial": null, "OCSP_cert_status": null, "OCSP_this_update": null, "OCSP_next_update": null, "domainName": "www.sustainability.k.u-tokyo.ac.jp", "port": 443, "subjectAltName": "DNS:k.u-tokyo.ac.jp, DNS:sustainability.k.u-tokyo.ac.jp, DNS:*.k.u-tokyo.ac.jp, DNS:*.sustainability.k.u-tokyo.ac.jp", "is_valid": true, "CA": "Amazon", "updated_at": "2025/07/18 09:00:00", "expires_at": "2026/08/17 08:59:59", "today": "2026/04/01 12:00:28", "UTC": { "updated_at": "2025-07-18T00:00:00Z", "expires_at": "2026-08-16T23:59:59Z", "today": "2026-04-01T03:00:28Z" }, "remaining_days": 137 }
#
OCSP response of
www.sustainability.k.u-tokyo.ac.jp
from OCSP Stapling
CONNECTED(00000003) OCSP response: no response sent --- Certificate chain 0 s:CN = k.u-tokyo.ac.jp i:C = US, O = Amazon, CN = Amazon RSA 2048 M03 a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256 v:NotBefore: Jul 18 00:00:00 2025 GMT; NotAfter: Aug 16 23:59:59 2026 GMT 1 s:C = US, O = Amazon, CN = Amazon RSA 2048 M03 i:C = US, O = Amazon, CN = Amazon Root CA 1 a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256 v:NotBefore: Aug 23 22:26:04 2022 GMT; NotAfter: Aug 23 22:26:04 2030 GMT 2 s:C = US, O = Amazon, CN = Amazon Root CA 1 i:C = US, ST = Arizona, L = Scottsdale, O = "Starfield Technologies, Inc.", CN = Starfield Services Root Certificate Authority - G2 a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256 v:NotBefore: May 25 12:00:00 2015 GMT; NotAfter: Dec 31 01:00:00 2037 GMT --- Server certificate -----BEGIN CERTIFICATE----- MIIGFDCCBPygAwIBAgIQB9WfVcVu4AHKDG+XetlUrjANBgkqhkiG9w0BAQsFADA8 MQswCQYDVQQGEwJVUzEPMA0GA1UEChMGQW1hem9uMRwwGgYDVQQDExNBbWF6b24g UlNBIDIwNDggTTAzMB4XDTI1MDcxODAwMDAwMFoXDTI2MDgxNjIzNTk1OVowGjEY MBYGA1UEAxMPay51LXRva3lvLmFjLmpwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A MIIBCgKCAQEAxcCgdzePIrZtqY2Nhi6IRm5Fu5m/IIKOeJy3blWVMOT14eeiQ32i vPxDWtaPCyrK4ZbQv6SoRcl+cUYidzgUvwgYr8MKQCOQ9jDrRpyn/+08+CdZcvoF w3mWol7hP9kQpe5Mzwyj8jAToI/r9tRCSwkowmDEHy+KJEBk12tjXN1j5wgTuoDH cN6tlmUpNGQDprTxfDRPJDhF4/cB6GFwmVA93qCgaybp9XtG+6Ls3fEed4gftvSW SVZiKkvgHvqcQMIOn4DrB6deDetc1BByg7IaPyqaW4qHjjacS9B90MlWZi02AyCq AR91+sI0akRp01/Th3o93Ki/lgU6Jut7NwIDAQABo4IDMjCCAy4wHwYDVR0jBBgw FoAUVdkYX9IczAHhWLS+q9lVQgHXLgIwHQYDVR0OBBYEFEKjJK4OG1o0CjvIHFTM Lqb0wsbIMG8GA1UdEQRoMGaCD2sudS10b2t5by5hYy5qcIIec3VzdGFpbmFiaWxp dHkuay51LXRva3lvLmFjLmpwghEqLmsudS10b2t5by5hYy5qcIIgKi5zdXN0YWlu YWJpbGl0eS5rLnUtdG9reW8uYWMuanAwEwYDVR0gBAwwCjAIBgZngQwBAgEwDgYD VR0PAQH/BAQDAgWgMBMGA1UdJQQMMAoGCCsGAQUFBwMBMDsGA1UdHwQ0MDIwMKAu oCyGKmh0dHA6Ly9jcmwucjJtMDMuYW1hem9udHJ1c3QuY29tL3IybTAzLmNybDB1 BggrBgEFBQcBAQRpMGcwLQYIKwYBBQUHMAGGIWh0dHA6Ly9vY3NwLnIybTAzLmFt YXpvbnRydXN0LmNvbTA2BggrBgEFBQcwAoYqaHR0cDovL2NydC5yMm0wMy5hbWF6 b250cnVzdC5jb20vcjJtMDMuY2VyMAwGA1UdEwEB/wQCMAAwggF9BgorBgEEAdZ5 AgQCBIIBbQSCAWkBZwB1ANdtfRDRp/V3wsfpX9cAv/mCyTNaZeHQswFzF8DIxWl3 AAABmBrufhgAAAQDAEYwRAIgCFakJ8b1ugh4B1kRY+dM1KLJ2hgNloFIcHfhT8+Y o+YCICiqraoOuGkLsElEm+vjQ6Wj42JrtAg+y4y8fTBIc6scAHYAwjF+V0UZo0Xu fzjespBB68fCIVoiv3/Vta12mtkOUs0AAAGYGu5+VAAABAMARzBFAiEArPfptbdm Beb9I/ZYYU80we7CzWGRC/eELCxp7FmsyRQCIE+i4v5pB9BeVKYm28vTjsQ4hbtL 0h6LAQhOp8rI6m/tAHYAlE5Dh/rswe+B8xkkJqgYZQHH0184AgE/cmd9VTcuGdgA AAGYGu5+ZAAABAMARzBFAiEAj43Wi4M5ZaXdIFctyapALPmDVvdx+XeyilYZOFGF iDcCIEPgK8boSmaEgJ7S0jcpV9/dlP+kh8ybpG8eaX0VEuUGMA0GCSqGSIb3DQEB CwUAA4IBAQBXZRkzouc/4imRh5hctOBH9Naapf79jRDyDC2ucf4x0aRCNjRiZ1Mp WTjzLz+Lz62v9KnZGgQa5Hw+AlI7lIv3y5gcckidYObnDnnksMdmtF/9Q7J6BFm6 lAWlanbO5pRYGGGfU/TuYL5kjqDUYFVuyjRR46pdtjyuJ8np9KOjfrSGsQ/ANf3o ZzO0Jko3rBTq/elmN0ws8QQW5tdMryasEyjrQIS7uXTxSWQmLOwelrdJn+bMNg/q Ve/Ye6xQnABwQahDZyGoId5EsKC+CoNCLjrhuxpky39pOaJh940Qf1b9VkKDBTfG FPOcr5z/68/dO657vFqHAs42hh6wGQNf -----END CERTIFICATE----- subject=CN = k.u-tokyo.ac.jp issuer=C = US, O = Amazon, CN = Amazon RSA 2048 M03 --- No client certificate CA names sent Peer signing digest: SHA256 Peer signature type: RSA Server Temp Key: ECDH, prime256v1, 256 bits --- SSL handshake has read 4532 bytes and written 471 bytes Verification: OK --- New, TLSv1.2, Cipher is ECDHE-RSA-AES128-GCM-SHA256 Server public key is 2048 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE No ALPN negotiated SSL-Session: Protocol : TLSv1.2 Cipher : ECDHE-RSA-AES128-GCM-SHA256 Session-ID: C9E7812BFB168B349460C2439EFC59FA41EEE0890699B684FA197E2A49D51B76 Session-ID-ctx: Master-Key: 99BB906D53253BBE94B4CC15886CA7F8CAD8A2D53D7DA462EBD20450DE4788632B8651CE7476DF1C4A28A3649314B8E6 PSK identity: None PSK identity hint: None SRP username: None TLS session ticket lifetime hint: 60570 (seconds) TLS session ticket: 0000 - 01 1c 40 02 a8 53 2c b0-d4 a9 8a b0 3f 55 70 fd ..@..S,.....?Up. 0010 - ae 1f 19 63 3c 93 c9 22-bb de 67 e3 f3 6a d3 16 ...c<.."..g..j.. 0020 - 9f 26 ff 4f 55 ef 92 a4-73 07 9a 3b db 2f 8c 7f .&.OU...s..;./.. 0030 - c1 03 19 1c 93 0b 96 0a-9b 7c 35 dc 3d ec 5c 07 .........|5.=.\. 0040 - 7e 7c bc fc 25 ed d9 b3-f2 ca b4 a1 ff aa 6d 9b ~|..%.........m. 0050 - 79 94 8b 5b 18 0b a4 5d-4e ef cf 7e ba 5f b2 2b y..[...]N..~._.+ 0060 - 17 3c 37 fe cc e0 3e 7c-0b 33 db 35 e5 d2 a2 ff .<7...>|.3.5.... 0070 - 5d 9f 56 21 69 f4 ab d6-9f 03 61 d6 f9 b9 a4 d1 ].V!i.....a..... 0080 - 7b fe 6c 23 13 a4 e4 8f-59 f0 {.l#....Y. Start Time: 1775012429 Timeout : 7200 (sec) Verify return code: 0 (ok) Extended master secret: yes ---
#
OCSP response of
www.sustainability.k.u-tokyo.ac.jp
from OCSP responder (Let's Encrypt)
OCSP response from OCSP responder allows only Let's Encrypt's Certificate.