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

TLSv1.2

strongtechnology.net · 216.131.96.54:443

Verified

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

Subject
CN=strongtechnology.net
Issuer
C=AT O=ZeroSSL GmbH CN=ZeroSSL RSA DV SSL CA 2
Valid from
2026-10-08T00:00:00+00:00
Expires
2027-01-06T23:59:59+00:00
Days remaining
89
Serial (hex)
708FD5225099DF92CE28F3B9E76AEB5B
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:strongtechnology.net, DNS:ar.strongvpn.com, DNS:ch.strongvpn.com, DNS:cn.strongvpn.com, DNS:es.strongvpn.com, DNS:www.strongtechnology.net

SHA-256 fingerprint

78:71:C4:6A:BA:A2:9D:6C:1A:C1:47:21:3E:AD:49:77:5E:06:90:20:B7:F7:14:4C:A3:CA:57:93:F9:36:46:06
Certificate extensions & PEM
authorityKeyIdentifier
4B:BE:FA:76:84:23:44:04:B9:CE:BE:31:6F:E9:F5:32:06:FF:0C:57
subjectKeyIdentifier
FC:C9:A1:09:D1:BB:8E:38:B5:A1:BA:3A:1C:C3:1E:59:75:2C:99:1D
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication
certificatePolicies
Policy: 2.23.140.1.2.1
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/ZeroSSLRSADVSSLCA2.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:strongtechnology.net, DNS:ar.strongvpn.com, DNS:ch.strongvpn.com, DNS:cn.strongvpn.com, DNS:es.strongvpn.com, DNS:www.strongtechnology.net
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:A2:39:67:C6:0D:B6:46:87:C6:6F:3D:F9:99:94:76: 93:A6:A6:11:20:84:57:D5:55:E7:E3:D0:A1:D9:B6:46 Timestamp : Oct 8 16:40:05.335 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:E2:99:2B:48:D9:C0:3B:BD:54:00:BD: BC:C3:88:DC:36:D7:90:F1:61:41:FC:80:9B:E1:D2:1B: 21:D2:D7:90:45:02:20:1C:FF:E3:49:22:89:4B:F1:27: 1B:CD:A4:A9:B6:81:BC:9F:7E:4F:8C:5B:70:15:B7:2C: C5:FC:88:88:76:CC:60 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A2:81:00:18:73:4E:17:6E:1D:47:E0:95:40:F3:81:BA: 54:66:97:CD:63:A8:43:50:71:6E:B8:09:4E:DA:F1:0D Timestamp : Oct 8 16:40:05.654 2026 GMT Extensions: 00:00:05:00:1F:50:E7:05 Signature : ecdsa-with-SHA256 30:45:02:21:00:E5:9B:7D:7D:08:BB:43:4F:DA:C4:79: 50:56:1B:D1:C4:FE:6E:E1:12:A0:DC:62:E2:66:A1:B8: 1F:CE:1A:EE:F8:02:20:03:42:AD:7F:16:10:DF:D2:81: 2E:A2:EA:0B:C7:0C:9C:92:F9:B5:56:66:36:63:79:E1: 43:27:B0:CD:B4:32:6D
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-09T16:39:14+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=AT O=ZeroSSL GmbH CN=ZeroSSL RSA DV SSL CA 2
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Valid from
2025-09-24T00:00:00+00:00
Expires
2035-09-23T23:59:59+00:00
Days remaining
3271
Serial (hex)
D0A908255F8E50E5F3396D1114702A37
Signature
RSA-SHA384
Public key
RSA 3072

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

EC:9D:6B:CA:B9:81:8B:7D:D5:9E:D6:1D:A2:3A:65:8A:96:A9:C4:E9:50:ED:EE:0D:2D:A9:3E:7C:F2:17:47:80
Certificate extensions & PEM
authorityKeyIdentifier
56:73:58:64:95:F9:92:1A:B0:12:2A:04:62:79:A1:40:15:88:21:49
subjectKeyIdentifier
4B:BE:FA:76:84:23:44:04:B9:CE:BE:31:6F:E9:F5:32:06:FF:0C:57
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Server Authentication
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoPublicServerAuthenticationRootR46.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationRootR46.p7c OCSP - URI:http://ocsp.sectigo.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root R46
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Valid from
2021-03-22T00:00:00+00:00
Expires
2038-01-18T23:59:59+00:00
Days remaining
4119
Serial (hex)
D27FBBC1DE359E5216AD6149586099C4
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

92:F3:51:BF:3D:54:16:4D:FA:8D:D8:F9:E1:13:9D:31:50:34:97:86:48:5D:2B:9E:EC:D0:0E:29:71:C1:E6:C5
Certificate extensions & PEM
authorityKeyIdentifier
53:79:BF:5A:AA:2B:4A:CF:54:80:E1:D8:9B:C0:9D:F2:B2:03:66:CB
subjectKeyIdentifier
56:73:58:64:95:F9:92:1A:B0:12:2A:04:62:79:A1:40:15:88:21:49
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy
crlDistributionPoints
Full Name: URI:http://crl.usertrust.com/USERTrustRSACertificationAuthority.crl
authorityInfoAccess
OCSP - URI:http://ocsp.usertrust.com
-----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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