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

sfr.com · 109.24.52.81:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. Peer certificate CN=`alticefrance.com' did not match expected CN=`sfr.com'

Certificate verification failed

Subject
C=FR ST=Île-de-France L=Paris O=SOCIETE FRANCAISE DU RADIOTELEPHONE - SFR S.A. CN=alticefrance.com
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2025-10-03T00:00:00+00:00
Expires
2026-10-27T23:59:59+00:00
Days remaining
31
Serial (hex)
04990DC83CCBB799AE675567EA8596A3
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:alticefrance.com, DNS:www.alticefrance.com

SHA-256 fingerprint

26:C8:50:B5:3E:09:BC:F8:93:51:9F:40:27:49:1F:08:5C:64:F3:89:C9:3B:30:BF:AA:AA:FB:A4:76:69:FD:CB
Certificate extensions & PEM
authorityKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
subjectKeyIdentifier
92:27:C5:98:1F:F7:A8:47:C6:C1:B6:38:B7:D9:26:5C:C0:A1:8B:AE
subjectAltName
DNS:alticefrance.com, DNS:www.alticefrance.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://cdp.thawte.com/ThawteTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.thawte.com CA Issuers - URI:http://cacerts.thawte.com/ThawteTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Oct 3 15:48:09.201 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:E8:96:76:43:96:CF:0F:84:D0:F2:16: 84:0C:C5:13:20:41:C7:73:5A:EA:93:FF:C5:A1:BB:FF: 61:BE:25:CF:26:02:20:2C:F8:92:82:10:30:EC:54:33: 66:F6:74:6A:C3:30:1E:D9:80:C9:3E:F1:44:C0:4A:61: D8:F3:71:8C:B0:47:B8 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 : Oct 3 15:48:09.189 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:FA:DD:66:BB:5E:D0:D6:03:D1:5D:AB: 94:56:1A:F8:AF:F9:0E:AA:3D:95:45:6A:E7:80:87:12: 20:EC:6B:F7:C2:02:20:22:76:E9:C5:09:34:7C:12:73: D2:D3:AC:65:30:BD:BF:CB:A5:45:2F:EC:23:02:81:95: 72:93:96:1E:B3:05:74 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 : Oct 3 15:48:09.210 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:41:D4:E0:B2:9C:7B:D7:C5:27:CB:4F:82: 86:4F:AB:D7:C9:06:3A:BE:DD:E2:A1:85:74:8E:C3:BF: 36:8E:BD:45:02:21:00:B5:08:D4:6E:85:D0:FE:5A:EC: 79:51:D4:D3:15:80:C9:03:23:CF:A1:43:32:C2:DF:76: D8:52:16:57:EB:E5:72
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-26T06:38:07+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:25+00:00
Expires
2027-11-02T12:24:25+00:00
Days remaining
402
Serial (hex)
090EE8C5DE5BFA62D2AE2FF7097C4857
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4B:CC:5E:23:4F:E8:1E:DE:4E:AF:88:3A:A1:9C:31:33:5B:0B:26:E8:5E:06:6B:99:45:E4:CB:61:53:EB:20:C2
Certificate extensions & PEM
subjectKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
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
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS
-----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.

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