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

seabix.com · 217.11.221.200:443

Verified
The certificate expires within 30 days.

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

Subject
CN=seabix.ch
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-07-20T05:38:03+00:00
Expires
2026-10-18T05:38:02+00:00
Days remaining
24
Serial (hex)
05B0361F81C88D43894196F62429AB2040E3
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:seabix.ch, DNS:seabix.com, DNS:seabix.li, DNS:seabix.net, DNS:www.seabix.ch, DNS:www.seabix.li, DNS:www.seabix.net

SHA-256 fingerprint

E2:B7:48:C3:5C:30:3B:91:80:A6:E2:82:11:E8:90:92:86:77:DE:BE:DB:B8:F8:F6:71:ED:41:6B:18:D9:83:F8
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
D5:35:12:07:0D:C2:62:A7:5B:42:E8:DB:D9:D4:96:B2:DD:61:27:68
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:seabix.ch, DNS:seabix.com, DNS:seabix.li, DNS:seabix.net, DNS:www.seabix.ch, DNS:www.seabix.li, DNS:www.seabix.net
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/100.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Jul 20 06:36:33.147 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:7E:FB:F6:12:0A:15:4E:82:5F:46:AE:CB: E6:48:55:2F:1F:56:B7:6A:31:28:79:7C:61:49:80:D9: 30:C0:DD:AB:02:21:00:DD:2A:D4:1C:DD:3D:2C:BB:89: 44:5F:9D:83:85:30:2D:94:41:06:0B:22:30:8F:E0:05: 99:E8:3C:17:7C:1A:87 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9: 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A Timestamp : Jul 20 06:36:33.363 2026 GMT Extensions: 00:00:05:00:16:4E:FA:8A Signature : ecdsa-with-SHA256 30:45:02:20:03:F3:D9:B2:64:B4:5A:6B:7B:13:C8:6B: 4A:9B:35:98:7C:EC:DE:D1:59:B8:86:94:3D:D6:0A:C3: 0A:F2:8B:58:02:21:00:80:D2:58:8F:80:F1:0C:01:6A: 0A:E6:26:18:63:86:13:58:8D:AB:EC:26:CF:30:06:93: 12:64:82:F4:35:1F:2E
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-23T17:04:15+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
710
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
2171
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

Registration / WHOIS →DNS records →