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

webmail.telexfibra.com.br · 38.226.186.138:443

Verified

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

Subject
CN=webmail.telexfibra.com.br
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-10-21T18:42:38+00:00
Expires
2027-01-19T18:42:37+00:00
Days remaining
88
Serial (hex)
054AFD76C282B7A38F708400D33AE27A0AF2
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:autoconfig.telexfibra.com.br, DNS:autodiscover.telexfibra.com.br, DNS:cpanel.telexfibra.com.br, DNS:cpcalendars.telexfibra.com.br, DNS:cpcontacts.telexfibra.com.br, DNS:mail.telexfibra.com.br, DNS:telexfibra.com.br, DNS:webdisk.telexfibra.com.br, DNS:webmail.telexfibra.com.br, DNS:www.telexfibra.com.br

SHA-256 fingerprint

D5:1D:C5:58:EB:38:DB:29:D7:7D:49:C0:BA:99:E5:9C:81:86:53:FD:46:26:94:97:E5:53:6D:44:10:7A:3F:23
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
EB:C2:E1:78:08:B8:18:7C:6A:39:9F:CC:39:65:84:0B:46:10:57:28
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:autoconfig.telexfibra.com.br, DNS:autodiscover.telexfibra.com.br, DNS:cpanel.telexfibra.com.br, DNS:cpcalendars.telexfibra.com.br, DNS:cpcontacts.telexfibra.com.br, DNS:mail.telexfibra.com.br, DNS:telexfibra.com.br, DNS:webdisk.telexfibra.com.br, DNS:webmail.telexfibra.com.br, DNS:www.telexfibra.com.br
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/115.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Oct 21 19:41:08.184 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:93:72:1B:7B:75:54:50:2C:EF:78:03: 98:1C:02:76:D6:7C:C4:3B:FC:35:F2:39:CB:83:A4:D9: 8A:0E:D0:4D:A6:02:21:00:99:55:A0:1A:8C:2B:40:22: BA:FF:DF:6D:FF:A1:82:E8:96:47:C4:A4:2A:88:16:D9: 47:5E:84:6A:89:80:BE:C4 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Oct 21 19:41:08.249 2026 GMT Extensions: 00:00:05:00:12:0C:79:58 Signature : ecdsa-with-SHA256 30:45:02:20:4D:2F:55:DD:EA:55:11:A3:60:3B:C2:BF: 2D:3E:5A:43:06:22:EB:36:C1:81:3E:53:90:BF:B1:89: 8A:C4:63:78:02:21:00:9E:3A:30:67:F9:C9:E4:AA:4F: 9C:F3:42:BA:6F:C4:0D:75:2D:CC:A5:0D:5B:51:50:8C: 22:56:2D:A0:5B:CC:91
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-23T13:40:08+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
680
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
2141
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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