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

natalfibra.com.br · 45.225.251.3:443

Verified

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

Subject
CN=natalfibra.com.br
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-11-02T01:30:28+00:00
Expires
2027-01-31T01:30:27+00:00
Days remaining
86
Serial (hex)
06BC671B0C4D307DB9D05E62D668FD5F6F0B
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:admin.natalfibra.com.br, DNS:autoconfig.natalfibra.com.br, DNS:autodiscover.natalfibra.com.br, DNS:imap.natalfibra.com.br, DNS:mail.natalfibra.com.br, DNS:natalfibra.com.br, DNS:pop.natalfibra.com.br, DNS:smtp.natalfibra.com.br, DNS:www.natalfibra.com.br

SHA-256 fingerprint

A7:C1:6D:C3:28:86:66:04:FC:C2:D7:CE:90:CD:A2:88:A5:1C:85:60:93:3F:DC:38:3B:C2:EA:5B:FF:9E:2F:49
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
BB:0D:FE:E2:D0:08:D0:E9:5E:2B:88:A2:13:66:CE:36:35:3A:F1:F2
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:admin.natalfibra.com.br, DNS:autoconfig.natalfibra.com.br, DNS:autodiscover.natalfibra.com.br, DNS:imap.natalfibra.com.br, DNS:mail.natalfibra.com.br, DNS:natalfibra.com.br, DNS:pop.natalfibra.com.br, DNS:smtp.natalfibra.com.br, DNS:www.natalfibra.com.br
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/12.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:A2:39:67:C6:0D:B6:46:87:C6:6F:3D:F9:99:94:76: 93:A6:A6:11:20:84:57:D5:55:E7:E3:D0:A1:D9:B6:46 Timestamp : Nov 2 02:28:58.376 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:24:E6:3A:1F:D6:77:60:C3:D5:28:5A:07: 5A:67:C2:22:BD:CD:E8:E5:9A:9C:40:B5:C7:17:2A:D6: BC:B0:A7:03:02:21:00:ED:53:20:7C:F5:51:27:B5:E5: 48:A2:7B:59:D0:91:33:08:EB:B2:66:49:AC:91:EC:B2: 7C:AC:0C:F1:2D:69:49 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 : Nov 2 02:28:58.750 2026 GMT Extensions: 00:00:05:00:34:FC:3A:FA Signature : ecdsa-with-SHA256 30:46:02:21:00:DF:CD:AE:B1:22:02:98:E8:C6:72:F6: 38:0B:75:AC:FA:13:58:06:8E:84:17:E7:C6:94:7D:7F: 2F:06:B1:4D:70:02:21:00:F0:55:A9:81:75:3A:D4:D6: 17:12:D6:12:6C:FB:CD:1D:52:49:73:86:E6:B4:1E:90: E6:FA:9E:11:03:5F:33:3B
-----BEGIN CERTIFICATE-----
MIIFzTCCBLWgAwIBAgISBrxnGwxNMH250F5i1mj9X28LMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNZUjEwHhcNMjYxMTAyMDEzMDI4WhcNMjcwMTMxMDEzMDI3WjAcMRowGAYDVQQD
ExFuYXRhbGZpYnJhLmNvbS5icjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC
ggEBAK/O/xeodNEVc1JRzDhhbebNRlr+l+0aYCaBN+BNNXfC8pyXsjnWbjZMV9/c
mErfuL+/NqRG46aotp29RXoPEDFCxiE5++QPjoF1CaY6ikZI78r6on1AiH1+S/Lh
Ec+tT05/jHnLW2cVa9z1oijkHrIL3FEFbg4yWrBEQdnGlK+PqHmvotiGa5OB8Efs
/VOAjS4nuOt7Y04rDKawzVQSt2iePfVhdXfhkO7X0Cfb4KnUcCsuVK5FiH9jB2kY
sGGp2hs6Xnzw6TnsWVJQDyp0bfLC8CxbULOaE4IOlaleAZ6FJlTwT519uIKnBBQN
ewXgA0CFOusqgNQSSjm7l1uH/LECAwEAAaOCAvAwggLsMA4GA1UdDwEB/wQEAwIF
oDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBS7
Df7i0AjQ6V4riKITZs42NTrx8jAfBgNVHSMEGDAWgBQfLzW+RhSCzUCxrnksVXj6
99Ro+zAzBggrBgEFBQcBAQQnMCUwIwYIKwYBBQUHMAKGF2h0dHA6Ly95cjEuaS5s
ZW5jci5vcmcvMIHrBgNVHREEgeMwgeCCF2FkbWluLm5hdGFsZmlicmEuY29tLmJy
ghxhdXRvY29uZmlnLm5hdGFsZmlicmEuY29tLmJygh5hdXRvZGlzY292ZXIubmF0
YWxmaWJyYS5jb20uYnKCFmltYXAubmF0YWxmaWJyYS5jb20uYnKCFm1haWwubmF0
YWxmaWJyYS5jb20uYnKCEW5hdGFsZmlicmEuY29tLmJyghVwb3AubmF0YWxmaWJy
YS5jb20uYnKCFnNtdHAubmF0YWxmaWJyYS5jb20uYnKCFXd3dy5uYXRhbGZpYnJh
LmNvbS5icjATBgNVHSAEDDAKMAgGBmeBDAECATAuBgNVHR8EJzAlMCOgIaAfhh1o
dHRwOi8veXIxLmMubGVuY3Iub3JnLzEyLmNybDCCAQ0GCisGAQQB1nkCBAIEgf4E
gfsA+QB2AEaiOWfGDbZGh8ZvPfmZlHaTpqYRIIRX1VXn49Ch2bZGAAABoZoWp4gA
AAQDAEcwRQIgJOY6H9Z3YMPVKFoHWmfCIr3N6OWanEC1xxcq1rywpwMCIQDtUyB8
9VEnteVIontZ0JEzCOuyZkmskeyyfKwM8S1pSQB/AKKBABhzThduHUfglUDzgbpU
ZpfNY6hDUHFuuAlO2vENAAABoZoWqP4ACAAABQA0/Dr6BAMASDBGAiEA382usSIC
mOjGcvY4C3Ws+hNYBo6EF+fGlH1/LwaxTXACIQDwVamBdTrU1hcS1hJs+80dUklz
hua0HpDm+p4RA18zOzANBgkqhkiG9w0BAQsFAAOCAQEAXUTqonMBaJHIOQ/HZAkP
uS7vF8YvNa7FsKCw4H6/KlisOY5+at93aSOEEDcdLaNq+Rg1mfKVgVmXJ9F5IetF
ss+iLpO3iJB6MjGxwYeD/EpFEG9kBDLZBLZZQ8DdSZiVO9iZQhH2ookSvy9W7kxT
AkSsk5w5EwusJm2qgUiYvO1zADR3jZzZ8ZtiDbZey8+f8daASMfXJieLa7WK0hEO
YgowYGZb2uwctKSknOotITS6Gq97n2FJOfGIm9ZgXfeOIOc+ye3RpPScN+YTLJXi
f3OsSoOUaUUz+D7/380eEVmzTM4Jl9FW3bzWLg4h2J603FqgHgaVQF7MXCJ4+Imz
Iw==
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-05T20:29:01+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
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
667
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
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
2128
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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