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

itesm.mx · 40.119.26.248:443

Verified

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

Subject
C=MX ST=Nuevo Leon L=Monterrey O=Instituto Tecnologico y de Estudios Superiores de Monterrey CN=*.itesm.mx
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-06-02T00:00:00+00:00
Expires
2026-12-04T23:59:59+00:00
Days remaining
66
Serial (hex)
0D7EF84CD6FBFAF74A59EB622DDE4E0F
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.itesm.mx, DNS:itesm.mx

SHA-256 fingerprint

D3:2F:8F:D7:12:FC:2C:B2:C9:A5:D6:41:B3:60:8B:B4:36:87:31:31:00:9B:92:30:A6:12:58:47:2F:C0:C0:EA
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
91:B1:7D:A6:6C:46:F2:F0:BE:AD:D8:E2:16:81:40:51:6C:8F:A0:05
subjectAltName
DNS:*.itesm.mx, DNS:itesm.mx
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://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 2 16:42:18.944 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:EF:EC:60:E5:AD:13:01:EF:D9:26:9F: C2:5A:81:F7:05:E8:1C:0D:89:9A:E8:15:7B:E6:E7:AC: E3:E5:7B:37:85:02:20:38:EA:C3:3C:54:E3:CF:57:61: 4A:7D:75:51:D4:38:61:74:EA:1B:69:74:66:14:D5:79: 87:98:E4:7E:60:6F:80 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 2 16:42:18.904 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:B8:7B:26:87:56:36:BB:65:63:9F:67: 80:37:F8:23:73:86:EC:85:E6:0B:EB:A5:7E:2A:C5:8A: 9A:F2:04:EA:84:02:21:00:82:1C:2A:DB:45:93:5E:CF: 31:1A:85:41:27:30:D4:AB:99:CE:F9:8D:6A:7B:38:1F: 04:4E:B6:C1:2D:9C:CC:FE 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 2 16:42:18.964 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:2C:C1:4F:8E:58:7B:95:92:A6:C2:40:11: 4A:4D:87:09:58:A4:93:B5:9B:68:62:FA:46:15:ED:4D: F3:2E:48:50:02:20:7A:23:2B:94:B4:DB:91:50:33:50: 9A:65:94:64:13:15:C6:AF:04:97:24:C6:05:04:6C:B4: 81:76:9D:2A:84:72
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-29T07:06:42+00:00

Server-presented chain · 1 additional certificate

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
1642
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-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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