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

videotron.com · 3.33.255.209:443

Verified

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

Subject
C=CA ST=Quebec L=Montreal O=Vidéotron ltée CN=videotron.com
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-06-04T00:00:00+00:00
Expires
2026-12-19T23:59:59+00:00
Days remaining
88
Serial (hex)
0E99EEC98536EA03A1D949D2F49CF7AF
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:videotron.com, DNS:videotron.ca, DNS:www.videotron.ca, DNS:www.videotron.com

SHA-256 fingerprint

81:10:E4:EB:EA:6B:11:2E:3B:3B:45:F1:31:0B:01:1A:84:E4:63:12:03:04:CE:56:EC:0A:5B:B9:8C:56:9A:D9
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
CB:A6:77:BD:51:38:D7:47:EB:D8:F5:E3:53:75:98:AE:3D:9C:1E:73
subjectAltName
DNS:videotron.com, DNS:videotron.ca, DNS:www.videotron.ca, DNS:www.videotron.com
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
basicConstraints
CA:FALSE
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 : Jun 4 20:26:20.461 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:23:DD:B3:3E:8C:F6:60:44:03:28:82:3E: C1:53:1F:B8:40:54:07:4C:A3:72:63:CF:71:00:08:1A: 33:F7:24:4A:02:20:56:2E:EC:9C:7D:F4:D2:0A:F1:93: DB:34:71:8D:F3:29:BD:1A:0C:F0:48:FA:E2:A1:20:5E: CF:82:9B:E3:E4:2D Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Jun 4 20:26:20.448 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:92:16:DF:71:05:DA:40:6D:8A:FC:DC: C9:51:A7:8F:FC:B1:6C:68:1A:C9:70:BD:FD:62:8A:DA: FE:76:26:1B:AB:02:21:00:CD:EF:3C:77:F1:7E:19:E4: D1:93:23:D6:25:80:F2:84:75:F4:A6:16:92:F1:CD:A3: B1:7F:C1:4C:96:0C:3A:8B 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 : Jun 4 20:26:20.492 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:67:A0:FB:9A:BE:65:97:1D:2D:0C:A1:C4: 85:32:8B:A1:FB:19:36:A8:E3:FB:62:FF:E6:0C:E0:EE: 0D:56:7A:FA:02:21:00:94:0B:E9:79:B4:8A:35:0B:7A: 71:4E:0E:79:FD:11:4A:7D:C8:8F:B4:DA:40:B4:F0:82: 3E:83:1D:03:FB:EE:DA
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-22T09:06:23+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2021-03-30T00:00:00+00:00
Expires
2031-03-29T23:59:59+00:00
Days remaining
1649
Serial (hex)
0CF5BD062B5602F47AB8502C23CCF066
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:02:5F:9F:C6:5F:DF:C9:5B:3C:A8:CC:78:67:B9:A5:87:B5:27:79:73:95:79:17:46:3F:C8:13:D0:B6:25:A9
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4133
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----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 →