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

rackdog.com · 31.43.160.6:443

Verified

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

Subject
CN=rackdog.com
Issuer
C=AT O=ZeroSSL GmbH CN=ZeroSSL ECC DV SSL CA 2
Valid from
2026-09-17T00:00:00+00:00
Expires
2026-12-16T23:59:59+00:00
Days remaining
84
Serial (hex)
C5FBE233F97C8D64B4B97730DBB6F64A
Signature
ecdsa-with-SHA256
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:rackdog.com

SHA-256 fingerprint

2C:4C:40:43:3E:C8:0A:99:80:21:21:7B:87:F0:BD:39:AE:B8:9E:BD:62:23:F4:38:5D:D3:0C:67:FD:B1:4E:BF
Certificate extensions & PEM
authorityKeyIdentifier
94:45:9F:DA:51:47:71:D5:73:AE:AC:1D:AB:08:72:12:6D:AD:7C:62
subjectKeyIdentifier
CF:D1:A7:1E:74:9D:C5:27:A3:0D:50:CC:D1:44:EB:1E:2E:A8:F7:47
keyUsage
Digital Signature
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication
certificatePolicies
Policy: 2.23.140.1.2.1
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/ZeroSSLECCDVSSLCA2.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:rackdog.com
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 25:B7:EF:DE:A1:13:01:93:ED:93:07:97:70:AA:32:2A: 26:62:0D:E3:5A:C8:AA:7C:75:19:7D:E0:B1:A9:E0:65 Timestamp : Sep 17 14:47:46.698 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:2C:C9:27:00:5D:73:3C:06:DE:75:B3:A1: C7:57:9C:FA:2F:60:A5:22:DA:ED:44:B8:FA:50:6A:CD: 58:4D:53:D4:02:21:00:C9:4E:BF:0E:89:9D:CA:5A:4C: 57:61:CB:DB:15:BA:17:ED:34:9F:5B:DE:9B:85:A0:32: B0:08:8C:B2:67:60:F5 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86: D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF Timestamp : Sep 17 14:47:47.363 2026 GMT Extensions: 00:00:05:00:42:3A:07:1E Signature : ecdsa-with-SHA256 30:45:02:20:7F:A5:49:A1:C3:66:79:3A:4F:EA:1F:D9: B9:9C:0C:95:67:C2:EA:F0:A3:B7:69:7D:7F:59:36:C3: B4:F1:27:D1:02:21:00:A3:C0:57:E2:B1:57:9F:8C:FC: 29:48:7E:8D:45:AE:E3:68:9F:7C:29:20:02:40:CD:6F: E5:9B:CA:C6:5B:FB:8D
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-23T22:45:34+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=AT O=ZeroSSL GmbH CN=ZeroSSL ECC DV SSL CA 2
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication Root E46
Valid from
2025-09-24T00:00:00+00:00
Expires
2035-09-23T23:59:59+00:00
Days remaining
3287
Serial (hex)
C4E1C5BB00F0278F347BE4F85D63FCCA
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

BE:C8:4F:CE:0D:AA:42:3F:3B:3E:ED:38:EA:48:06:6C:C5:61:8F:52:44:AD:65:CD:9F:86:24:A8:13:FA:4C:3D
Certificate extensions & PEM
authorityKeyIdentifier
D1:22:DA:4C:59:F1:4B:5F:26:38:AA:9D:D6:EE:EB:0D:C3:FB:A9:61
subjectKeyIdentifier
94:45:9F:DA:51:47:71:D5:73:AE:AC:1D:AB:08:72:12:6D:AD:7C:62
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/SectigoPublicServerAuthenticationRootE46.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationRootE46.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 E46
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust ECC Certification Authority
Valid from
2021-03-22T00:00:00+00:00
Expires
2038-01-18T23:59:59+00:00
Days remaining
4135
Serial (hex)
1A9EAFEC6DE8E19B5C193141B68D90DD
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

EA:6B:89:ED:69:07:A2:09:FF:91:88:67:6F:B1:64:E7:AC:ED:89:4B:89:96:DF:BE:5C:E5:BB:CC:22:DE:4D:DD
Certificate extensions & PEM
authorityKeyIdentifier
3A:E1:09:86:D4:CF:19:C2:96:76:74:49:76:DC:E0:35:C6:63:63:9A
subjectKeyIdentifier
D1:22:DA:4C:59:F1:4B:5F:26:38:AA:9D:D6:EE:EB:0D:C3:FB:A9:61
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/USERTrustECCCertificationAuthority.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

Registration / WHOIS →DNS records →