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

TLSv1.2

cablevision.com.ar · 200.45.2.140:443

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

Certificate verification failed

Subject
C=AR L=Buenos Aires O=Telecom Argentina S.A. CN=*.telecom.com.ar
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-05-28T00:00:00+00:00
Expires
2026-12-12T23:59:59+00:00
Days remaining
77
Serial (hex)
0D07FDF17221C8EB0FDDE81FE7F97666
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.telecom.com.ar, DNS:telecom.com.ar

SHA-256 fingerprint

6A:94:16:9D:EC:9D:C5:25:87:61:F4:DC:02:B5:BD:89:68:11:DA:7B:F4:06:46:B9:A0:D4:24:A3:D0:6F:5F:A1
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
01:57:D5:C4:1C:CE:53:15:5A:48:1A:5B:97:1F:FA:C0:96:60:61:7F
subjectAltName
DNS:*.telecom.com.ar, DNS:telecom.com.ar
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client 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 : 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 : May 28 13:27:37.838 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:4F:C4:FC:8C:CA:A0:D6:C9:BB:2E:EA:DF: 4C:25:66:C2:27:AD:93:4B:69:AE:7A:18:56:56:6E:9B: 50:69:B9:64:02:20:0C:34:11:8F:0B:59:17:C5:78:B9: EC:B3:A3:B4:C6:43:5F:36:2D:0D:CC:75:97:CD:00:D4: 84:71:77:4C:E5:8F 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 : May 28 13:27:37.797 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:6F:57:C9:E7:AF:BB:53:69:A2:65:94:6B: 1B:0F:77:15:AC:F5:39:5A:E0:BF:64:26:89:51:69:15: 66:C2:9B:63:02:20:3F:04:ED:C2:C8:E3:DF:C4:5E:DE: 75:32:7C:76:5C:BC:AF:2C:7E:65:C5:9F:11:A6:75:DB: CB:B9:F5:5E:08:F6 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 : May 28 13:27:37.844 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:79:12:F5:18:DD:0F:A0:4F:65:D9:5D:23: CD:0E:82:A7:EA:4B:A7:D2:41:F8:05:74:56:66:C6:06: 59:51:02:72:02:20:09:58:CF:D3:F7:1F:88:20:E2:7F: 65:C5:E1:66:E6:16:5D:44:A8:90:5A:D5:38:FE:DE:B0: 93:6D:A5:4C:1F:EC
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-26T10:18:52+00:00

Server-presented chain · 2 additional certificates

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-----

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
4129
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

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