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

TLSv1.2

libercom.com.br · 187.84.230.72:443

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
CN=libercom.com.br
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-11T21:06:09+00:00
Expires
2027-01-09T21:06:08+00:00
Days remaining
88
Serial (hex)
0591A4591FA91BE50F8AD804D24B97D95E2D
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:libercom.com.br, DNS:www.libercom.com.br

SHA-256 fingerprint

47:5A:F2:D1:F5:B7:18:58:DF:5A:23:94:C0:11:CC:ED:D9:6E:19:39:3D:CA:67:0D:7F:D3:98:B6:84:69:4F:44
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
65:F5:33:03:C0:D2:76:06:B1:6F:41:ED:B8:9D:A5:85:0E:B2:C7:60
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:libercom.com.br, DNS:www.libercom.com.br
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/46.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Oct 11 22:04:39.400 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:5B:66:88:AF:70:6D:62:38:CD:20:9C:2A: CE:D9:35:88:96:3B:29:9D:04:3D:92:56:7E:8B:58:3C: AF:88:F5:CF:02:20:7F:8A:15:27:9E:5E:B3:54:6C:54: 38:0D:24:31:D8:24:EB:C9:CC:7D:A1:56:9A:5D:90:14: C2:A7:1C:0C:EC:7E Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:8D:D7:91:D1:CD:05:49:ED:B6:03:55:D6: 06:B6:4F:AD:30:DB:71:FE:78:8F:0F:C7:C8:FB:C4:B1 Timestamp : Oct 11 22:04:40.580 2026 GMT Extensions: 00:00:05:00:07:76:D4:55 Signature : ecdsa-with-SHA256 30:46:02:21:00:B2:36:7A:CE:E6:93:24:47:37:FC:D5: CE:09:FD:98:4C:1D:48:A4:A3:B4:AA:A0:67:D5:59:A1: 80:E9:86:83:C6:02:21:00:F9:B1:E4:B8:34:15:B8:E0: E5:B1:7A:7C:25:70:68:69:43:B3:A2:F5:DC:9B:F8:2B: 90:AC:67:58:BF:64:DA:61
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-13T03:25:24+00:00

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

View certificate JSON

Registration / WHOIS →DNS records →