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

smartcom.com.br · 200.160.2.95:443

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=smartcom.com.br
Issuer
C=US O=Let's Encrypt CN=YE2
Valid from
2026-09-04T11:59:05+00:00
Expires
2026-12-03T11:59:04+00:00
Days remaining
72
Serial (hex)
0557731DB47BB5497128985580A2DFDB6982
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:smartcom.com.br, DNS:www.smartcom.com.br

SHA-256 fingerprint

FA:C7:30:1D:A0:18:BF:61:1F:D9:D9:9A:6F:56:D9:74:1C:BD:32:B0:C0:7C:C6:32:15:35:F8:7A:96:15:31:53
Certificate extensions & PEM
keyUsage
Digital Signature
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
B2:2E:21:41:08:54:3C:71:18:BF:DE:51:1E:A2:D2:DA:42:10:03:89
authorityKeyIdentifier
B9:59:F2:8E:CF:22:F0:86:D3:37:48:FF:76:14:18:BA:82:D8:55:87
authorityInfoAccess
CA Issuers - URI:http://ye2.i.lencr.org/
subjectAltName
DNS:smartcom.com.br, DNS:www.smartcom.com.br
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://ye2.c.lencr.org/3.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86: D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF Timestamp : Sep 4 12:57:36.369 2026 GMT Extensions: 00:00:05:00:3C:5E:47:4E Signature : ecdsa-with-SHA256 30:46:02:21:00:D0:37:3A:A5:1B:AB:DC:76:75:6D:36: 88:94:B2:A7:20:FF:BA:4E:7A:13:2F:0E:AF:5C:4F:5E: E3:E2:88:E6:C9:02:21:00:BD:A7:11:B7:AB:C1:29:16: 5F:2D:DC:E8:B1:F4:0D:99:F2:38:3C:24:F8:EB:34:28: B3:85:8A:CC:A0:80:E7:F3 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 : Sep 4 12:57:37.789 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:F4:7A:66:04:39:FE:4B:CF:DD:3B:86: A4:1D:77:D7:51:2B:4B:F0:E4:EB:33:76:65:8F:4D:6A: 9A:B0:65:FB:97:02:20:4E:A1:36:F2:F6:D3:E4:E3:4F: 04:56:A9:A5:AC:B2:5C:40:9C:CC:E0:8E:15:4C:98:DA: 16:E6:5E:A6:15:F7:B3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-21T21:50:32+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YE2
Issuer
C=US O=ISRG CN=Root YE
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
712
Serial (hex)
4DF3B15DD6C0784C507CD37B58E6F115
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

97:65:8D:E8:C6:8D:FA:98:AC:E1:E5:02:8A:63:D5:4A:1A:AE:91:1B:3E:21:47:10:76:C6:85:0C:D0:8C:BA:B4
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
B9:59:F2:8E:CF:22:F0:86:D3:37:48:FF:76:14:18:BA:82:D8:55:87
authorityKeyIdentifier
A3:C8:26:5A:8E:A1:4C:D0:35:63:FC:9B:23:C8:3A:AE:56:F3:4F:56
authorityInfoAccess
CA Issuers - URI:http://ye.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://ye.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 →