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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

aitcom.net · 216.117.151.187:443

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=aitcom.net
Issuer
C=US O=Let's Encrypt CN=R13
Valid from
2026-05-08T20:15:07+00:00
Expires
2026-08-06T20:15:06+00:00
Days remaining
-45
Serial (hex)
06647907400D2BD1B28A6035A743C9F3D5FE
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:aitcom.net, DNS:www.aitcom.net

SHA-256 fingerprint

A5:D3:6F:AF:25:1F:BC:E3:24:58:6F:43:05:EB:C5:0B:93:2F:C2:B9:AA:6D:1B:ED:4D:59:E8:7F:BB:48:62:40
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
24:40:BA:14:29:2D:38:6E:82:5A:78:BA:13:B2:64:72:5B:54:BE:57
authorityKeyIdentifier
E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
authorityInfoAccess
CA Issuers - URI:http://r13.i.lencr.org/
subjectAltName
DNS:aitcom.net, DNS:www.aitcom.net
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://r13.c.lencr.org/127.crl
ct_precert_scts
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 : May 8 21:13:38.096 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:10:B7:B6:A4:D2:DA:1C:E6:3D:9A:CA:74: 5C:39:87:53:3E:9B:67:48:D0:BA:C1:CB:CA:04:E3:C7: 98:2F:7D:8D:02:21:00:AC:F9:3B:A1:8D:56:97:10:D2: 2C:3A:29:D2:B4:7F:C8:65:39:24:82:DB:0F:21:46:EE: F8:37:02:DF:F8:6D:24 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 8 21:13:38.151 2026 GMT Extensions: 00:00:05:00:0A:9D:2B:FE Signature : ecdsa-with-SHA256 30:44:02:20:6A:83:FC:F6:29:BE:FC:9B:2E:6A:8A:B3: DF:91:09:29:B2:15:50:76:56:1D:89:DE:32:07:D2:48: 7C:A6:13:DE:02:20:70:DA:AB:CB:3B:BC:3F:26:F8:C7: E1:B3:34:27:F7:45:B1:21:E0:22:B2:97:3C:97:DA:66: FA:C4:B3:34:F3:B2
-----BEGIN CERTIFICATE-----
MIIE/jCCA+agAwIBAgISBmR5B0ANK9GyimA1p0PJ89X+MA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNSMTMwHhcNMjYwNTA4MjAxNTA3WhcNMjYwODA2MjAxNTA2WjAVMRMwEQYDVQQD
EwphaXRjb20ubmV0MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9wQA
b0UhgoCvyiJZmfKn+KO54gNVQPIH/fULl0ijjWE+lYn1uj5KHInDUA/CFGaxEWZk
9NHcXGEa8QMhxMzTIJ8Nx8wSJWBxuimbBDFZ3f38fzb5B3E34f3F/SLRsQFg4gzf
JOL4AbOvls/GFWfs30fl54c/k4CzrIMoBiyYjwUfK34uHMjRLj6tWO/MSTkTSuxr
GGEg1vmjVBKRURZbWZ6OGDULfFM1hwja2anywUklNn37ltdn2pASC8ep+3+gdB8H
DXCUOjl7pGu8xhHtigGDXN1psmPeuVOhwuZxczkXQtoicv+NkaO6OW+h1KvK1yFw
2TCWVlv3m7NTwGsLnQIDAQABo4ICKDCCAiQwDgYDVR0PAQH/BAQDAgWgMBMGA1Ud
JQQMMAoGCCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFCRAuhQpLThu
glp4uhOyZHJbVL5XMB8GA1UdIwQYMBaAFOernw8sM6BT015PeMiyhA471pIzMDMG
CCsGAQUFBwEBBCcwJTAjBggrBgEFBQcwAoYXaHR0cDovL3IxMy5pLmxlbmNyLm9y
Zy8wJQYDVR0RBB4wHIIKYWl0Y29tLm5ldIIOd3d3LmFpdGNvbS5uZXQwEwYDVR0g
BAwwCjAIBgZngQwBAgEwLwYDVR0fBCgwJjAkoCKgIIYeaHR0cDovL3IxMy5jLmxl
bmNyLm9yZy8xMjcuY3JsMIIBCwYKKwYBBAHWeQIEAgSB/ASB+QD3AHYA2AlVO5RP
ev/IFhlvlE+Fq7D4/F6HVSYPFdEucrtFSxQAAAGeCXBYMAAABAMARzBFAiAQt7ak
0toc5j2aynRcOYdTPptnSNC6wcvKBOPHmC99jQIhAKz5O6GNVpcQ0iw6KdK0f8hl
OSSC2w8hRu74NwLf+G0kAH0AbP5QGUOoXqkWvFLRM+TcyR7xQRx9JYQg0XOAnhgY
6zoAAAGeCXBYZwAIAAAFAAqdK/4EAwBGMEQCIGqD/PYpvvybLmqKs9+RCSmyFVB2
Vh2J3jIH0kh8phPeAiBw2qvLO7w/JvjH4bM0J/dFsSHgIrKXPJfaZvrEszTzsjAN
BgkqhkiG9w0BAQsFAAOCAQEAk2FG7dhO2dlchXioS8EEXSiBazxlylRaxGm4ZsZ2
jb1ZU+yQIPqlhJVM8fxy6/iP4gMdGt5xr2jYgRjXsRKHA78HgP2sdNSKYHCsjr5Y
jwJPOCdnw1ZrQMZ/EE+ajAJkQ0aj6Uoy0of7vg1mu2dvbmsgd0oLgKVRrH6ajlo7
/+WiSu+hzrMejE2JmCIa+XNWW+4RDIFo/XTUYpPmFxjrt6KvT9b7M2v0TiaB4Par
GQc11Aky1wrMa6QAFTwc7n4OSsCkKqkRXqodJkm5vHr2vAuh/bJbSry71+s3J60s
MbJGq/A7Q9z8In2Ri82din2dRl/6DE1ze0yc1oik24dYMQ==
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-20T07:22:35+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R13
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
173
Serial (hex)
5A00F212D8D4B480F3924157EA298305
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

D3:B1:28:21:6A:84:3F:8E:F1:32:15:01:F5:DF:52:A5:DF:52:93:9E:E2:C1:92:97:71:2C:D3:DE:4D:41:93:54
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
E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
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.

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