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

ns3.nameself.com · 81.176.18.102:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. Peer certificate CN=`nagios.regtime.net' did not match expected CN=`ns3.nameself.com'

Certificate verification failed

Subject
CN=nagios.regtime.net
Issuer
C=AT O=ZeroSSL GmbH CN=ZeroSSL ECC DV SSL CA 2
Valid from
2026-09-19T00:00:00+00:00
Expires
2026-12-18T23:59:59+00:00
Days remaining
81
Serial (hex)
CE6DE87D50246517758E68FED21030A7
Signature
ecdsa-with-SHA256
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:nagios.regtime.net

SHA-256 fingerprint

9E:BF:AD:14:56:1D:14:D2:7B:14:35:DB:6B:3E:73:24:E9:61:72:9D:CF:D6:F2:7D:B5:68:60:E9:69:7A:37:3C
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
B2:6C:61:1E:F0:4E:21:7E:25:27:A8:C9:DD:B6:CF:C7:8F:EB:D3:0C
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:nagios.regtime.net
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Sep 19 21:50:31.810 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:B8:C3:D5:43:62:11:67:A2:98:D8:86: 77:48:14:E2:84:C3:06:E1:8E:76:86:F2:4B:07:CF:B9: 7E:83:DA:E7:38:02:21:00:D4:FC:DB:0F:67:E7:BC:86: 24:4D:CD:B7:29:48:06:CB:DC:EB:EE:6A:40:63:77:66: 02:44:65:E3:85:C8:54:40 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 : Sep 19 21:50:32.654 2026 GMT Extensions: 00:00:05:00:10:2C:45:74 Signature : ecdsa-with-SHA256 30:45:02:21:00:EF:21:73:E2:7E:90:8A:76:BF:77:1F: F8:FB:62:A8:6F:23:1F:30:12:ED:C6:5B:0E:13:85:6B: 85:59:FE:4F:DF:02:20:55:1D:7B:8E:66:3D:4C:52:5E: F8:4E:47:20:B9:94:FC:96:D9:97:A8:98:3E:72:84:2C: E2:C3:A5:88:C4:62:B3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-ECDSA-AES128-GCM-SHA256 · Checked 2026-09-28T08:50:07+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
3282
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
4130
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

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