DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

hlc.edu.tw · 210.240.39.60:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
C=US ST=California L=Sunnyvale O=Infoblox OU=Engineering CN=ns1.hlc.edu.tw
Issuer
C=US ST=California L=Sunnyvale O=Infoblox OU=Engineering CN=ns1.hlc.edu.tw
Valid from
2026-07-07T23:51:11+00:00
Expires
2027-07-07T23:51:11+00:00
Days remaining
258
Serial (hex)
26D9F0EFBAAD26C32BC1F72821968A05
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

IP Address:210.240.39.60, IP Address:2001:288:B200:1:0:0:0:60, DNS:ns1.hlc.edu.tw

SHA-256 fingerprint

A2:A8:4A:48:83:A4:D2:83:A6:44:B8:77:0A:1A:ED:B0:EE:23:6C:4C:A4:E8:89:2D:73:2D:EA:F0:FB:B9:2B:3C
Certificate extensions & PEM
subjectAltName
IP Address:210.240.39.60, IP Address:2001:288:B200:1:0:0:0:60, DNS:ns1.hlc.edu.tw
-----BEGIN CERTIFICATE-----
MIIDrzCCApegAwIBAgIQJtnw77qtJsMrwfcoIZaKBTANBgkqhkiG9w0BAQsFADB4
MQswCQYDVQQGDAJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTESMBAGA1UEBwwJU3Vu
bnl2YWxlMREwDwYDVQQKDAhJbmZvYmxveDEUMBIGA1UECwwLRW5naW5lZXJpbmcx
FzAVBgNVBAMMDm5zMS5obGMuZWR1LnR3MB4XDTI2MDcwNzIzNTExMVoXDTI3MDcw
NzIzNTExMVoweDELMAkGA1UEBgwCVVMxEzARBgNVBAgMCkNhbGlmb3JuaWExEjAQ
BgNVBAcMCVN1bm55dmFsZTERMA8GA1UECgwISW5mb2Jsb3gxFDASBgNVBAsMC0Vu
Z2luZWVyaW5nMRcwFQYDVQQDDA5uczEuaGxjLmVkdS50dzCCASIwDQYJKoZIhvcN
AQEBBQADggEPADCCAQoCggEBANExZQjtHMhvhefWHE0LuTiMrSkVYwut+pIONHFX
NoGm9/POWHrQY+nXKzsuxObzTXrdd1FuHju5fSdZHBEX4y2KT/mtMGW4KRu3jYCY
lcYSdX+ug36+9FW/uy9xQ4/cK8V/Kkq7Ui9DE/1jyYG99bboaakN7fPNq8EWV7QO
yseIsqCmvWHdg4AaHDm4H6POxLA2nr3+mylHXLr87ti7sHXTJiKuYKndfOf6z2nY
5N50EincoBcIhAQQmd6uNr8cg5rgjE9lGndI8HExFXGQzTxpPI8r1ywbIfsT3K/Y
ujGKxMhmsCRXL1JZmLFeppw73wg4uCV/Ng8JebAapx4aDU8CAwEAAaM1MDMwMQYD
VR0RBCowKIcE0vAnPIcQIAECiLIAAAEAAAAAAAAAYIIObnMxLmhsYy5lZHUudHcw
DQYJKoZIhvcNAQELBQADggEBAECeAhlOTyXD+txhT5toSaCwVaEVSk/8rhCVgaks
bKOvFeitrYdceXBTHMj51b+iMF0eMYZ1tuuVuSR8Qh2izk6h2ClDNcifiHzKvd44
p58OykQ7jTBsIziXY8GIMUm4Nur5BnEpLgrp2q/yIE+GzfwIoUpd848gxwoINRKw
WTsu4eENiUj2Jh79iMWUKCmPMa/xsA4uE0zFrANlS96Ndh68QbTVVyrQRZwx7X3F
5smFfw7/T2JoO2viaRQDr0wqLC9vQUlcdWY9x4x+t6iOEQr7/SkUSloGR4RNSqom
zXWnL1aA6t1A2yJ0A8wHPZ/ull/NZHpRZdu0gfbk7mI5FoM=
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-22T05:10:23+00:00

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

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