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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

itnetworkkey.com · 193.29.63.156:443

Verified

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

Subject
CN=itnetworkkey.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-01T07:20:01+00:00
Expires
2026-11-30T07:20:00+00:00
Days remaining
68
Serial (hex)
057D6F8929A395E397CC683DAA9BE608BD7C
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:itnetworkkey.com, DNS:mail.itnetworkkey.com, DNS:webmail.itnetworkkey.com, DNS:www.itnetworkkey.com

SHA-256 fingerprint

4A:72:DE:7F:0D:EB:F6:DF:3D:1A:D2:4E:80:A9:78:6F:CD:6C:7D:70:AF:A5:A2:C1:76:DD:6D:8C:23:1A:49:A4
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
0B:27:89:2B:0A:8C:CD:E8:C1:39:3A:F3:F7:1A:49:0B:1C:17:3F:C7
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:itnetworkkey.com, DNS:mail.itnetworkkey.com, DNS:webmail.itnetworkkey.com, DNS:www.itnetworkkey.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/125.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 1 08:18:29.800 2026 GMT Extensions: 00:00:05:00:3B:86:E8:AA Signature : ecdsa-with-SHA256 30:45:02:20:19:61:F5:A2:0F:6D:D0:00:37:F7:6B:5E: 8A:FB:73:E8:E2:2F:8E:DC:EA:08:B2:95:12:93:CA:21: 84:70:17:13:02:21:00:EC:02:A9:9B:09:42:90:3A:D4: BB:A7:2F:0F:E7:AB:B1:A4:79:B5:7C:8B:55:E8:02:4E: 2C:6E:65:9B:D4:CE:E1 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Sep 1 08:18:31.949 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:22:D2:99:E3:B3:E3:5F:1E:2C:E8:4F:0E: FA:0D:6A:87:D1:75:D2:97:53:C3:A8:CC:4A:C4:1F:A4: 52:89:97:27:02:21:00:B4:71:EB:D6:A6:EE:A5:23:C9: DA:5E:06:E2:6B:61:EF:00:1D:D7:C3:50:8C:3A:38:64: AB:22:47:C4:2D:0D:FD
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-22T18:37:54+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
711
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
2172
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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