THE CERTIFICATE BEHIND THE CONNECTION

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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

dyndns.com · 138.1.125.45:443

Verified

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

Subject
C=US ST=California L=Redwood City O=Oracle Corporation CN=dyn.com
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-08-31T00:00:00+00:00
Expires
2027-03-17T23:59:59+00:00
Days remaining
176
Serial (hex)
0659C371B152A0A8D4986A7C9E749E6C
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:dyn.com, DNS:account.dyn.com, DNS:account.dyndns.com, DNS:admin.dyndns.com, DNS:crestronapi.tzo.net, DNS:dyndns.com, DNS:dyndns.org, DNS:help.dyn.com, DNS:members.dyndns.com, DNS:members.dyndns.org, DNS:update.dyndns.com, DNS:update.dyndns.org, DNS:www.dyndns.com, DNS:www.dyndns.org, DNS:web.iad.dyndns.com, DNS:web.phx.dyndns.com, DNS:update.iad.dyndns.com, DNS:update.phx.dyndns.com, DNS:cdn.dyn.com, DNS:cdn.dyndns.com, DNS:updater.dyn.com, DNS:checkip.dyn.com, DNS:checkip.dyndns.com, DNS:checkip.dyndns.org, DNS:checkipv6.dyn.com, DNS:checkipv6.dyndns.com, DNS:checkipv6.dyndns.org

SHA-256 fingerprint

3A:E1:E7:86:FD:1D:11:7D:D1:80:4D:75:88:5B:BA:54:18:A5:AD:4B:87:56:6D:46:69:66:3A:D1:AF:94:46:77
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
9E:EB:8C:DA:F6:1A:2D:0C:58:22:5E:C8:8E:4D:CE:0F:35:2D:19:59
subjectAltName
DNS:dyn.com, DNS:account.dyn.com, DNS:account.dyndns.com, DNS:admin.dyndns.com, DNS:crestronapi.tzo.net, DNS:dyndns.com, DNS:dyndns.org, DNS:help.dyn.com, DNS:members.dyndns.com, DNS:members.dyndns.org, DNS:update.dyndns.com, DNS:update.dyndns.org, DNS:www.dyndns.com, DNS:www.dyndns.org, DNS:web.iad.dyndns.com, DNS:web.phx.dyndns.com, DNS:update.iad.dyndns.com, DNS:update.phx.dyndns.com, DNS:cdn.dyn.com, DNS:cdn.dyndns.com, DNS:updater.dyn.com, DNS:checkip.dyn.com, DNS:checkip.dyndns.com, DNS:checkip.dyndns.org, DNS:checkipv6.dyn.com, DNS:checkipv6.dyndns.com, DNS:checkipv6.dyndns.org
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-2.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-2.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Aug 31 16:06:21.121 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:82:AA:B3:C0:44:95:7E:39:AF:21:67: FD:3B:B5:16:B2:31:33:11:FF:28:18:7C:12:EB:A8:AC: 69:6B:1E:09:CA:02:20:75:46:EB:49:67:52:C9:CB:59: B2:53:8D:F2:1E:26:35:C9:63:7F:5F:59:79:A0:F8:D5: 9F:B7:2D:F9:58:C4:10 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Aug 31 16:06:21.048 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:64:F2:9F:8D:84:0C:74:2F:F3:EB:B7:76: C8:2D:F8:E3:F4:C9:1C:2F:42:15:99:39:C6:AF:15:6F: 3A:F8:B3:1A:02:21:00:F6:CC:9C:F6:BC:0E:68:85:27: 02:20:53:52:81:8D:F2:46:D3:82:E8:FB:2F:00:09:84: 8F:A3:86:56:72:48:C8 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Aug 31 16:06:21.132 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:B4:50:78:5D:90:06:81:B9:88:DD:BD: E5:31:7D:D4:8F:70:D2:7D:AE:24:99:0A:87:01:95:49: 64:62:70:37:C1:02:21:00:9B:2B:CE:22:6B:3B:33:DD: 78:DE:9E:CE:58:A1:EF:F5:DA:69:D5:B2:53:88:82:84: FA:48:95:02:BC:55:B3:F2
-----BEGIN CERTIFICATE-----
MIIIsTCCB5mgAwIBAgIQBlnDcbFSoKjUmGp8nnSebDANBgkqhkiG9w0BAQsFADBZ
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMTMwMQYDVQQDEypE
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cDovL2NhY2VydHMuZGlnaWNlcnQuY29tL0RpZ2lDZXJ0R2xvYmFsRzJUTFNSU0FT
SEEyNTYyMDIwQ0ExLmNydDAMBgNVHRMBAf8EAjAAMIIBfwYKKwYBBAHWeQIEAgSC
AW8EggFrAWkAdgBMY9yY5Zwdq4j2Hoo93q6Pq0SjN3tfm5TD+6Gc/MG+JgAAAaBY
kljBAAAEAwBHMEUCIQCCqrPARJV+Oa8hZ/07tRayMTMR/ygYfBLrqKxpax4JygIg
dUbrSWdSyctZslON8h4mNcljf19ZeaD41Z+3LflYxBAAdgDW1Y2p0BdT82pKoMdX
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hI+jhlZySMgAdwBEwr0M6RQOZKXJSgGTClqhuzWXDgDuERaJaCocRNe1ZgAAAaBY
kljMAAAEAwBIMEYCIQC0UHhdkAaBuYjdveUxfdSPcNJ9riSZCocBlUlkYnA3wQIh
AJsrziJrOzPdeN6ezlih7/XaadWyU4iChPpIlQK8VbPyMA0GCSqGSIb3DQEBCwUA
A4IBAQBslYTQhQUd3jSnyjEFtuCEhmjK+0xphouEwwMcB5Fn8PwL4ikn4tuO/YtD
2an4BKAEHFjJVNMcrsyO31E3oblVagv5qTSakfdCO7CYO1MRYqqmKCqbCjTZnQ+D
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47bdSeyXqVCqksAawpy3AZQxkKNdZVVZt7HwTCUYA2Tb2KrP/qe2DHaIy5V3rDTE
2xK5Fjc1Fri4eZ+bAJGYgKCHcLx9rsxaCDQdjFrEGHoDyQw6Qg9j2nLZPfRXHElF
g9AzfN8nQaJI4z4U47LLN95l5/o2
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-22T14:16:36+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2021-03-30T00:00:00+00:00
Expires
2031-03-29T23:59:59+00:00
Days remaining
1649
Serial (hex)
0CF5BD062B5602F47AB8502C23CCF066
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:02:5F:9F:C6:5F:DF:C9:5B:3C:A8:CC:78:67:B9:A5:87:B5:27:79:73:95:79:17:46:3F:C8:13:D0:B6:25:A9
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3
-----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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