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

speednetkolkata.com · 103.235.104.132:443

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=speednetkolkata.com
Issuer
C=US O=Let's Encrypt CN=R12
Valid from
2026-01-30T12:22:07+00:00
Expires
2026-04-30T12:22:06+00:00
Days remaining
-156
Serial (hex)
05B7082A6C1DE2C015875079B8AC98FA3CF4
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.speednetkolkata.com, DNS:speednetkolkata.com

SHA-256 fingerprint

39:7F:AE:9A:43:1C:D6:0A:5C:B0:55:78:71:EF:91:AA:7D:E9:06:92:E6:39:67:25:F1:E5:69:1E:51:13:A0:B4
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
49:F4:FA:53:6E:DB:FF:1B:6B:99:02:60:19:3A:B6:1A:65:E0:E1:C9
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:*.speednetkolkata.com, DNS:speednetkolkata.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://r12.c.lencr.org/117.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 0E:57:94:BC:F3:AE:A9:3E:33:1B:2C:99:07:B3:F7:90: DF:9B:C2:3D:71:32:25:DD:21:A9:25:AC:61:C5:4E:21 Timestamp : Jan 30 13:20:37.801 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:3A:70:3D:12:5D:66:15:05:7D:A2:2D:B5: 73:AA:C2:60:29:65:EF:C1:47:F1:16:41:93:CA:D9:EA: CC:7F:2C:F3:02:20:33:5C:A4:AC:68:BE:8B:59:88:8E: 65:A4:F1:DB:7C:85:14:E6:C4:6E:AA:F7:D7:B5:67:D4: F2:44:00:D3:4C:F9 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D1:6E:A9:A5:68:07:7E:66:35:A0:3F:37:A5:DD:BC:03: A5:3C:41:12:14:D4:88:18:F5:E9:31:B3:23:CB:95:04 Timestamp : Jan 30 13:20:38.035 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D4:73:B2:1D:28:1D:89:3F:2B:4D:D9: C8:46:6D:96:61:D0:AA:BD:60:C4:6B:04:04:C5:ED:48: B8:66:70:16:03:02:21:00:89:0E:5B:57:FD:4D:B2:7C: D3:62:C5:63:94:22:7C:3C:8A:69:06:AA:B0:9D:3E:0C: F4:14:02:8F:EF:83:74:32
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-03T01:30:14+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
160
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-----
MIIFBjCCAu6gAwIBAgIRAMISMktwqbSRcdxA9+KFJjwwDQYJKoZIhvcNAQELBQAw
TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjQwMzEzMDAwMDAw
WhcNMjcwMzEyMjM1OTU5WjAzMQswCQYDVQQGEwJVUzEWMBQGA1UEChMNTGV0J3Mg
RW5jcnlwdDEMMAoGA1UEAxMDUjEyMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIB
CgKCAQEA2pgodK2+lP474B7i5Ut1qywSf+2nAzJ+Npfs6DGPpRONC5kuHs0BUT1M
5ShuCVUxqqUiXXL0LQfCTUA83wEjuXg39RplMjTmhnGdBO+ECFu9AhqZ66YBAJpz
kG2Pogeg0JfT2kVhgTU9FPnEwF9q3AuWGrCf4yrqvSrWmMebcas7dA8827JgvlpL
Thjp2ypzXIlhZZ7+7Tymy05v5J75AEaz/xlNKmOzjmbGGIVwx1Blbzt05UiDDwhY
XS0jnV6j/ujbAKHS9OMZTfLuevYnnuXNnC2i8n+cF63vEzc50bTILEHWhsDp7CH4
WRt/uTp8n1wBnWIEwii9Cq08yhDsGwIDAQABo4H4MIH1MA4GA1UdDwEB/wQEAwIB
hjAdBgNVHSUEFjAUBggrBgEFBQcDAgYIKwYBBQUHAwEwEgYDVR0TAQH/BAgwBgEB
/wIBADAdBgNVHQ4EFgQUALUp8i2ObzHom0yteD763OkM0dIwHwYDVR0jBBgwFoAU
ebRZ5nu25eQBc4AIiMgaWPbpm24wMgYIKwYBBQUHAQEEJjAkMCIGCCsGAQUFBzAC
hhZodHRwOi8veDEuaS5sZW5jci5vcmcvMBMGA1UdIAQMMAowCAYGZ4EMAQIBMCcG
A1UdHwQgMB4wHKAaoBiGFmh0dHA6Ly94MS5jLmxlbmNyLm9yZy8wDQYJKoZIhvcN
AQELBQADggIBAI910AnPanZIZTKS3rVEyIV29BWEjAK/duuz8eL5boSoVpHhkkv3
4eoAeEiPdZLj5EZ7G2ArIK+gzhTlRQ1q4FKGpPPaFBSpqV/xbUb5UlAXQOnkHn3m
FVj+qYv87/WeY+Bm4sN3Ox8BhyaU7UAQ3LeZ7N1X01xxQe4wIAAE3JVLUCiHmZL+
qoCUtgYIFPgcg350QMUIWgxPXNGEncT921ne7nluI02V8pLUmClqXOsCwULw+PVO
ZCB7qOMxxMBoCUeL2Ll4oMpOSr5pJCpLN3tRA2s6P1KLs9TSrVhOk+7LX28NMUlI
usQ/nxLJID0RhAeFtPjyOCOscQBA53+NRjSCak7P4A5jX7ppmkcJECL+S0i3kXVU
y5Me5BbrU8973jZNv/ax6+ZK6TM8jWmimL6of6OrX7ZU6E2WqazzsFrLG3o2kySb
zlhSgJ81Cl4tv3SbYiYXnJExKQvzf83DYotox3f0fwv7xln1A2ZLplCb0O+l/AK0
YE0DS2FPxSAHi0iwMfW2nNHJrXcY3LLHD77gRgje4Eveubi2xxa+Nmk/hmhLdIET
iVDFanoCrMVIpQ59XWHkzdFmoHXHBV7oibVjGSO7ULSQ7MJ1Nz51phuDJSgAIU7A
0zrLnOrAj/dfrlEWRhCvAgbuwLZX1A2sjNjXoPOHbsPiy+lO1KF8/XY7
-----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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