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

tycatv.com.tw · 34.81.132.44:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=tycatv.com.tw
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-10-04T10:06:01+00:00
Expires
2027-01-02T10:06:00+00:00
Days remaining
52
Serial (hex)
051130A9A01E65CC85D8CF807DE7BAC00155
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.com.tw.1eng.cheni.tw, DNS:*.ttb.com.tw, DNS:*.tycatv.com.tw, DNS:ttb.com.tw, DNS:tycatv.com.tw, DNS:www.ttb.com.tw.1eng.cheni.tw, DNS:www.tycatv.com.tw.1eng.cheni.tw

SHA-256 fingerprint

64:99:F9:66:D1:E6:9B:0C:47:61:36:4B:CB:6E:00:EA:B7:1C:8D:6D:24:DB:05:43:59:DB:FC:99:5F:B1:63:7C
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
F1:C5:D4:7C:8D:14:18:76:E3:99:22:69:C7:4B:1E:D7:B4:6F:FA:B2
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:*.com.tw.1eng.cheni.tw, DNS:*.ttb.com.tw, DNS:*.tycatv.com.tw, DNS:ttb.com.tw, DNS:tycatv.com.tw, DNS:www.ttb.com.tw.1eng.cheni.tw, DNS:www.tycatv.com.tw.1eng.cheni.tw
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/86.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 00:1A:5D:1A:1C:2D:93:75:B6:48:55:78:F8:2F:71:A1: AE:6E:EF:39:7D:29:7C:8A:E3:15:7B:CA:DE:E1:A0:1E Timestamp : Oct 4 11:04:31.959 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:40:C4:9A:64:22:16:51:7B:5B:D8:9D:FA: E7:43:D9:BD:97:6D:83:40:97:F6:A1:40:EE:F6:F5:B1: 59:E9:0B:8A:02:20:18:FE:78:82:7B:9F:9B:50:C1:D2: D1:FD:A3:EB:46:94:18:E5:C3:77:E6:63:63:7F:22:20: AE:56:00:A2:9C:BB Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A2:81:00:18:73:4E:17:6E:1D:47:E0:95:40:F3:81:BA: 54:66:97:CD:63:A8:43:50:71:6E:B8:09:4E:DA:F1:0D Timestamp : Oct 4 11:04:32.653 2026 GMT Extensions: 00:00:05:00:1B:EB:11:80 Signature : ecdsa-with-SHA256 30:44:02:20:0B:45:05:C1:30:2D:CC:F8:6E:B9:0E:E0: 4F:65:19:DF:11:68:F5:32:BE:86:3F:63:2D:37:92:7E: B8:45:E6:49:02:20:70:97:46:83:AC:99:58:6F:61:2A: 48:81:48:54:5B:8B:64:74:92:F7:9B:62:32:80:DB:AC: D2:98:94:D7:16:62
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-10T15:12:20+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
662
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2123
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

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

View certificate JSON

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