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

ns2.ispsolutionbd.com · 91.98.186.91:443

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=*.premiumaifree.online
Issuer
C=US O=Let's Encrypt CN=R12
Valid from
2026-03-09T17:06:03+00:00
Expires
2026-06-07T17:06:02+00:00
Days remaining
-128
Serial (hex)
063AF344BF597DAA21745E7396108D5DD735
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.premiumaifree.online, DNS:premiumaifree.online

SHA-256 fingerprint

E2:99:74:F8:68:64:46:26:24:2F:59:A3:49:5D:F9:D5:75:27:0E:3E:A4:B2:A0:80:63:02:59:FE:C8:47:74:49
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
4F:FA:27:51:84:4A:64:15:85:CF:E6:2A:B3:AA:E6:8C:2C:A4:DD:43
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:*.premiumaifree.online, DNS:premiumaifree.online
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://r12.c.lencr.org/54.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A5:C9:78:92:5D:57:46:17:82:87:0D:D8:89:66:0B:5C: 55:64:8B:7D:00:40:F2:EC:07:68:51:D1:88:69:19:F7 Timestamp : Mar 9 18:04:34.285 2026 GMT Extensions: 00:00:05:00:34:BA:EF:52 Signature : ecdsa-with-SHA256 30:45:02:21:00:F7:C0:C7:CA:23:1D:63:DD:28:14:F0: 3B:3A:A8:65:9D:67:80:7D:6D:82:0D:38:7D:1C:E2:AE: B9:2F:5C:9D:DB:02:20:58:FA:F6:91:74:77:E5:52:15: C4:CF:AC:56:A4:95:0E:E7:21:1D:85:CF:E7:1F:7E:C4: 5A:19:85:1B:56:72:08 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 96:97:64:BF:55:58:97:AD:F7:43:87:68:37:08:42:77: E9:F0:3A:D5:F6:A4:F3:36:6E:46:A4:3F:0F:CA:A9:C6 Timestamp : Mar 9 18:04:35.826 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:4A:62:CC:14:59:24:79:E0:88:FB:CB:06: D3:DE:A9:2C:33:23:0A:13:4C:51:A3:B7:28:0A:C1:C7: 56:08:C1:24:02:21:00:DD:BB:4D:B6:3E:3B:A1:38:FC: 29:35:70:66:26:8C:6F:F4:17:F8:7B:7B:4A:67:65:6C: EE:9E:C9:AD:AD:9F:56
-----BEGIN CERTIFICATE-----
MIIFHDCCBASgAwIBAgISBjrzRL9ZfaohdF5zlhCNXdc1MA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNSMTIwHhcNMjYwMzA5MTcwNjAzWhcNMjYwNjA3MTcwNjAyWjAhMR8wHQYDVQQD
DBYqLnByZW1pdW1haWZyZWUub25saW5lMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A
MIIBCgKCAQEAscJdwV9+e9osO0FYXiAejERw/24mU/3MA+7QjVxyE5g/7RjDATc4
BMeYqtPNkI0wDJWAMdsUdn/y7vrgknXxFDu6mfbC3LaKWA5QfP67rq91BesOQNY0
KfxrppzztVYeGLxO03mx0W8yua5OHa+yN2Hx1ffwUPP8jKgOVHT2ylkBuZC/coYZ
zHmEjSFwLkQfG5oQI24CyNjWn9Oi4ohL4+LXr+RejMIbxnXudihQXaW4KM4gVBY0
g2lUwlX6U1eZ3uNmQa9/mGZWVp1y7gFvxzZb9yJXjd6G7gt4R53DYINRiWGGiPFz
n6sZjd06UytDdu1CU2Vrt5WpD+x1UDRuuwIDAQABo4ICOjCCAjYwDgYDVR0PAQH/
BAQDAgWgMBMGA1UdJQQMMAoGCCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwHQYDVR0O
BBYEFE/6J1GESmQVhc/mKrOq5owspN1DMB8GA1UdIwQYMBaAFAC1KfItjm8x6JtM
rXg++tzpDNHSMDMGCCsGAQUFBwEBBCcwJTAjBggrBgEFBQcwAoYXaHR0cDovL3Ix
Mi5pLmxlbmNyLm9yZy8wNwYDVR0RBDAwLoIWKi5wcmVtaXVtYWlmcmVlLm9ubGlu
ZYIUcHJlbWl1bWFpZnJlZS5vbmxpbmUwEwYDVR0gBAwwCjAIBgZngQwBAgEwLgYD
VR0fBCcwJTAjoCGgH4YdaHR0cDovL3IxMi5jLmxlbmNyLm9yZy81NC5jcmwwggEM
BgorBgEEAdZ5AgQCBIH9BIH6APgAfgClyXiSXVdGF4KHDdiJZgtcVWSLfQBA8uwH
aFHRiGkZ9wAAAZzTxbBtAAgAAAUANLrvUgQDAEcwRQIhAPfAx8ojHWPdKBTwOzqo
ZZ1ngH1tgg04fRzirrkvXJ3bAiBY+vaRdHflUhXEz6xWpJUO5yEdhc/nH37EWhmF
G1ZyCAB2AJaXZL9VWJet90OHaDcIQnfp8DrV9qTzNm5GpD8PyqnGAAABnNPFtnIA
AAQDAEcwRQIgSmLMFFkkeeCI+8sG096pLDMjChNMUaO3KArBx1YIwSQCIQDdu022
PjuhOPwpNXBmJoxv9Bf4e3tKZ2Vs7p7Jra2fVjANBgkqhkiG9w0BAQsFAAOCAQEA
naMoZPO44HqBuN8HwOBq4WAC2ju0ve4AQUUwiyfcfbBf4qBjOkTSKE/t5qZHJdvr
qAzu2P7+IcM83okkgIxWdJZp97CeMHvdnr63/VNqVadwfXrJzDcM9EEDsblduWzh
D1Ax8u7q181sE82x77WH+DUWmsoV/yjziXreknZhhaXV7+yGowMhDqcqqD98qDw8
YJPkLhQPAaX3gtfeDzOQjP9O+SYsQSsC7R0lhqwrHjfusEBtJRWRNrv7AYwC30ET
DdMQSDCVu9L9id07vF0w6VvjcvKawHd/GtkJvlWMl2xvIaE/BPPdKI3OMGf60JDm
DobOW8h2mTJFXmTrwzoExQ==
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-13T16:46:18+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
150
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 →