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

afinet.com.br · 179.127.199.255:443

Verified

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

Subject
CN=afinet.com.br
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-09-13T15:46:12+00:00
Expires
2026-12-12T15:46:11+00:00
Days remaining
68
Serial (hex)
05BA13590AABF916CE9CD03DF54036B9B902
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:afinet.boletodomes.com.br, DNS:afinet.com.br, DNS:boleto.uon.com.br, DNS:boletodomes.com.br, DNS:img.boletodomes.com.br, DNS:ontelecom.net.br, DNS:www.afinet.com.br, DNS:www.ontelecom.com.br, DNS:www.ontelecom.net.br

SHA-256 fingerprint

7E:FC:6D:25:E7:10:2F:6F:F1:EE:93:E1:62:94:2A:A2:11:DC:EC:77:C5:37:4E:EA:98:5D:43:0A:50:74:4B:95
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
F0:50:8D:74:15:52:A4:20:3D:D2:AF:77:A5:5B:19:7C:6F:21:BD:7E
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:afinet.boletodomes.com.br, DNS:afinet.com.br, DNS:boleto.uon.com.br, DNS:boletodomes.com.br, DNS:img.boletodomes.com.br, DNS:ontelecom.net.br, DNS:www.afinet.com.br, DNS:www.ontelecom.com.br, DNS:www.ontelecom.net.br
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/3.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Sep 13 16:44:42.767 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:1F:0E:0F:DD:1B:10:39:2B:B0:D2:A8:DA: BF:3C:7E:04:FF:CD:05:19:41:3F:96:78:BA:46:27:9F: 70:E7:8B:16:02:21:00:A8:3C:E6:F5:BE:08:18:02:57: 41:DB:4F:14:61:C8:68:5F:88:0D:10:6B:E8:EA:88:02: BC:32:05:A8:50:80:24 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A8:26:CB:E3:0A:C6:35:12:46:53:3F:E0:65:F1:4F:19: D9:6E:19:08:13:C4:1D:D9:6D:79:00:B3:12:3C:55:27 Timestamp : Sep 13 16:44:43.444 2026 GMT Extensions: 00:00:05:00:32:C4:DC:C4 Signature : ecdsa-with-SHA256 30:44:02:20:07:D7:E5:24:33:C1:10:A9:1F:FE:E2:CC: DB:FD:57:74:6B:94:B3:3E:8D:8C:78:98:EE:34:06:19: 91:02:61:BA:02:20:13:6A:B3:3F:CD:D5:44:8B:16:A5: BC:B5:82:A1:ED:A8:FC:69:E6:C2:F5:84:01:DC:3B:F5: C6:19:A3:27:98:AA
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_CHACHA20_POLY1305_SHA256 · Checked 2026-10-05T05:45:14+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
698
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
2159
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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