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

mail.genting.net.id · 103.183.58.54:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed
The certificate has expired.

Certificate verification failed

Subject
CN=mail.genting.net.id
Issuer
C=US O=Let's Encrypt CN=R12
Valid from
2026-05-05T00:05:11+00:00
Expires
2026-08-03T00:05:10+00:00
Days remaining
-94
Serial (hex)
05F0CB0CA57E06709AE081587C2836B5F000
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:mail.genting.net.id

SHA-256 fingerprint

7A:54:AE:42:05:6E:C4:49:B0:28:6F:27:38:28:89:F2:85:26:15:10:0C:61:66:90:3C:1E:73:F9:29:F5:05:D7
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
D8:DB:FB:8B:8B:B3:1B:0B:49:2C:A5:37:36:24:21:11:FC:81:74:89
authorityKeyIdentifier
00:B5:29:F2:2D:8E:6F:31:E8:9B:4C:AD:78:3E:FA:DC:E9:0C:D1:D2
authorityInfoAccess
CA Issuers - URI:http://r12.i.lencr.org/
subjectAltName
DNS:mail.genting.net.id
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://r12.c.lencr.org/1.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : May 5 01:03:41.183 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:7F:9B:A2:8E:13:17:E9:52:EF:65:8B:1C: 12:A5:33:82:52:3F:31:C7:85:C7:C1:88:B4:F7:F8:58: 42:6D:E3:E0:02:20:0F:16:93:9C:21:3A:CC:E1:58:66: C0:8D:D3:9D:A2:56:A0:9B:53:65:A0:E0:2F:63:57:BB: 79:9C:22:8B:1A:01 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9: 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A Timestamp : May 5 01:03:42.151 2026 GMT Extensions: 00:00:05:00:0A:0B:4E:F2 Signature : ecdsa-with-SHA256 30:45:02:21:00:BB:95:E3:D1:36:6D:C9:6B:67:AD:82: 1D:67:33:1E:5B:34:8F:8F:F4:CE:3E:00:6C:AB:73:9E: 84:5B:84:1B:48:02:20:10:14:AF:C5:C8:72:3D:92:29: 11:42:2C:49:DC:F9:65:0D:65:46:55:3B:0E:53:EA:C1: F7:71:4D:FE:1B:F3:7A
-----BEGIN CERTIFICATE-----
MIIE/jCCA+agAwIBAgISBfDLDKV+BnCa4IFYfCg2tfAAMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNSMTIwHhcNMjYwNTA1MDAwNTExWhcNMjYwODAzMDAwNTEwWjAeMRwwGgYDVQQD
ExNtYWlsLmdlbnRpbmcubmV0LmlkMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIB
CgKCAQEAsY7a9uf19CpH/ArOPDQU+bBiPZw0gtTOu1c09HKMY83jMbhFrDcOhq9E
ep4lQwwn48dUDxSdB/9ny0+GQ+DOe1PgErCXnrupG9SOy7ILTwVSxPgzYAPicCBC
h74mZdKIR7WYPH8wLMtFqwMZhwzc7npp8Ex+jOGGOabKdgY8hUg+0REbSYA99a5U
meYL0C9gxDB9hnZ3T950Ip+avaTR2jZ4G14FnLTEvXEZeBODm5OjjB85oO5TZYM2
dKyYNfwR4hVTLV+/yWTIDMl351P52qBXE1Sl2y8w1dP1Obiin7+huh/BQiuhPYN7
qt82dXZfJNaouxj3w/EI3BYNP6TTSwIDAQABo4ICHzCCAhswDgYDVR0PAQH/BAQD
AgWgMBMGA1UdJQQMMAoGCCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYE
FNjb+4uLsxsLSSylNzYkIRH8gXSJMB8GA1UdIwQYMBaAFAC1KfItjm8x6JtMrXg+
+tzpDNHSMDMGCCsGAQUFBwEBBCcwJTAjBggrBgEFBQcwAoYXaHR0cDovL3IxMi5p
LmxlbmNyLm9yZy8wHgYDVR0RBBcwFYITbWFpbC5nZW50aW5nLm5ldC5pZDATBgNV
HSAEDDAKMAgGBmeBDAECATAtBgNVHR8EJjAkMCKgIKAehhxodHRwOi8vcjEyLmMu
bGVuY3Iub3JnLzEuY3JsMIIBCwYKKwYBBAHWeQIEAgSB/ASB+QD3AHUAyKPEf8ez
rbk1awE/anoSbeM6TkOlxkb5l605dZkdz5oAAAGd9amGfwAABAMARjBEAiB/m6KO
ExfpUu9lixwSpTOCUj8xx4XHwYi09/hYQm3j4AIgDxaTnCE6zOFYZsCN052iVqCb
U2Wg4C9jV7t5nCKLGgEAfgBs/lAZQ6heqRa8UtEz5NzJHvFBHH0lhCDRc4CeGBjr
OgAAAZ31qYpHAAgAAAUACgtO8gQDAEcwRQIhALuV49E2bclrZ62CHWczHls0j4/0
zj4AbKtznoRbhBtIAiAQFK/FyHI9kikRQixJ3PllDWVGVTsOU+rB93FN/hvzejAN
BgkqhkiG9w0BAQsFAAOCAQEAy0M9yFVS8H7JTT6SwRrCZ/wxUDhAjP5cZ2EpUwYC
G0HBetSE7DznMtRYG6923FKUnjxmobi+l64yfJy98spmDwaSQyG6SGWsWS+6A8ey
59O5jDNVU1PwKJ+21w8VVPvgSosdxVfmcUoyuDSvdZvPeyY4eNtZwb+DaYw2ry/i
JOYmRJIOB3i/7CJUpgyFkXaOCBhuYx1KPhH1zUnSij8GN4nBaCsIeP72dTLigSH4
O3NafYLuSeEemRcOalgRiUgAEAuNdS+QKg7kqW1GU/vhUxWLi/owm5FOrdE0Pv9q
tXF+QnjaiHH4pi2ctl9yjWGuAkr5QHqO90z7FnAZk5x/mA==
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-11-04T20:10:38+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R12
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2024-03-13T00:00:00+00:00
Expires
2027-03-12T23:59:59+00:00
Days remaining
128
Serial (hex)
C212324B70A9B49171DC40F7E285263C
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:1F:CE:77:84:01:68:99:A5:A0:02:03:A9:EF:C8:0F:18:EB:BD:75:58:07:17:ED:C1:55:35:80:93:08:36:EC
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
00:B5:29:F2:2D:8E:6F:31:E8:9B:4C:AD:78:3E:FA:DC:E9:0C:D1:D2
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

Registration / WHOIS →DNS records →