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

sparknetbd.com · 192.250.235.94:443

Verified

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

Subject
CN=cpcontacts.sparknetbd.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-08T03:44:10+00:00
Expires
2026-12-07T03:44:09+00:00
Days remaining
50
Serial (hex)
054F56D18FAAB2439981B07B1AFB89D82049
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:autoconfig.sparknetbd.com, DNS:autodiscover.sparknetbd.com, DNS:cpanel.sparknetbd.com, DNS:cpcalendars.sparknetbd.com, DNS:cpcontacts.sparknetbd.com, DNS:mail.sparknetbd.com, DNS:sparknetbd.com, DNS:webdisk.sparknetbd.com, DNS:webmail.sparknetbd.com, DNS:www.sparknetbd.com

SHA-256 fingerprint

10:AE:DB:96:D9:AD:1F:44:45:AB:FF:A0:4A:5C:8D:A5:E4:D9:89:B5:46:21:EF:57:37:5E:9E:A5:FB:4B:D9:65
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
79:30:FC:70:94:AC:57:B1:CB:25:BA:4C:70:32:30:F2:3E:DB:F7:D5
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:autoconfig.sparknetbd.com, DNS:autodiscover.sparknetbd.com, DNS:cpanel.sparknetbd.com, DNS:cpcalendars.sparknetbd.com, DNS:cpcontacts.sparknetbd.com, DNS:mail.sparknetbd.com, DNS:sparknetbd.com, DNS:webdisk.sparknetbd.com, DNS:webmail.sparknetbd.com, DNS:www.sparknetbd.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/74.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Sep 8 04:42:40.516 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:F2:59:66:16:DB:11:13:A4:EA:2C:45: E1:02:BE:18:11:75:6A:92:C3:5F:6B:E7:C6:3D:3C:7B: D9:E1:8D:C1:E0:02:21:00:8A:94:3B:29:2A:32:D6:58: 99:30:8A:5F:16:7A:00:79:6E:48:2A:1B:E7:AE:BB:72: 35:BE:6F:E8:38:D7:52:DA 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 : Sep 8 04:42:40.662 2026 GMT Extensions: 00:00:05:00:2F:FC:2A:82 Signature : ecdsa-with-SHA256 30:45:02:20:04:A5:ED:40:56:A5:21:3D:01:2B:A8:B0: 34:C2:9A:B9:41:CF:0A:DF:2D:5C:D7:96:B4:92:8E:5E: 45:C4:D2:6C:02:21:00:CC:8D:FB:D3:39:D7:96:99:60: 89:34:64:B6:87:F1:40:E7:60:BE:54:FC:3A:32:4A:21: 41:7B:DC:30:EC:5C:0B
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-17T08:31:13+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
686
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
2147
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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