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

mail.mctech.com.mx · 72.52.196.220:443

Verified

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

Subject
CN=mail.fusion.mx
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-26T01:21:02+00:00
Expires
2026-12-25T01:21:01+00:00
Days remaining
77
Serial (hex)
0632BEB3B6EE646666FB03B0881010F9E8DE
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.mctec.com.mx, DNS:*.mctech.mx, DNS:cpanel.mctech.com.mx, DNS:cpcalendars.mctech.com.mx, DNS:cpcontacts.mctech.com.mx, DNS:fusion.com.mx, DNS:fusion.mx, DNS:mail.fusion.com.mx, DNS:mail.fusion.mx, DNS:mail.mctech.com.mx, DNS:mail.registrodedominios.mx, DNS:mctec.com.mx, DNS:mctech.com.mx, DNS:mctech.mx, DNS:registrodedominios.mx, DNS:webdisk.mctech.com.mx, DNS:webmail.mctech.com.mx, DNS:www.fusion.com.mx, DNS:www.fusion.mx, DNS:www.mctech.com.mx, DNS:www.registrodedominios.mx

SHA-256 fingerprint

34:9A:8A:C7:55:4D:24:D9:4A:68:52:19:1B:BB:7C:D5:AA:CE:AB:59:30:E2:4F:63:D5:B3:A1:F5:6B:31:4E:07
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
A6:7E:2E:F6:64:92:75:DC:C3:99:22:F5:78:BC:29:7D:5F:77:0A:B3
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:*.mctec.com.mx, DNS:*.mctech.mx, DNS:cpanel.mctech.com.mx, DNS:cpcalendars.mctech.com.mx, DNS:cpcontacts.mctech.com.mx, DNS:fusion.com.mx, DNS:fusion.mx, DNS:mail.fusion.com.mx, DNS:mail.fusion.mx, DNS:mail.mctech.com.mx, DNS:mail.registrodedominios.mx, DNS:mctec.com.mx, DNS:mctech.com.mx, DNS:mctech.mx, DNS:registrodedominios.mx, DNS:webdisk.mctech.com.mx, DNS:webmail.mctech.com.mx, DNS:www.fusion.com.mx, DNS:www.fusion.mx, DNS:www.mctech.com.mx, DNS:www.registrodedominios.mx
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/95.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37: 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23 Timestamp : Sep 26 02:19:30.673 2026 GMT Extensions: 00:00:05:00:46:8A:FD:FD Signature : ecdsa-with-SHA256 30:44:02:20:43:D2:DB:E7:C7:1E:B3:D9:AE:16:91:EB: D0:76:92:AA:1F:E8:02:59:B6:B4:82:10:C9:38:0B:65: C4:B9:1F:16:02:20:5C:2E:0C:52:73:A9:A7:B7:4B:C6: 20:9A:49:35:19:52:F9:5E:92:2D:D3:78:32:C5:5F:CB: F7:C4:69:95:56:43 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 : Sep 26 02:19:37.213 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:88:04:54:CB:9C:50:2D:22:54:1E:29: 66:BC:9D:31:7A:DD:C3:43:42:F9:70:D8:82:9B:E5:61: 17:F9:77:C5:95:02:21:00:8B:88:AC:E7:CE:5D:7F:F9: D8:26:B2:34:5A:E2:25:96:C8:23:8B:D0:87:26:CD:D9: 82:40:36:6F:C9:5F:70:1A
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-08T02:49:10+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
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
695
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
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
2156
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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