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

overdrive.com · 207.54.136.33:443

Verified

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

Subject
CN=*.redirect.overdrive.com
Issuer
C=US O=Google Trust Services CN=WR1
Valid from
2026-09-14T16:56:03+00:00
Expires
2026-12-13T16:56:02+00:00
Days remaining
40
Serial (hex)
5C444644313F9D1911A2178350C966D4
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.redirect.overdrive.com, DNS:*.overdrive.com, DNS:*.lib.overdrive.com, DNS:*.libraryreserve.com, DNS:overdrive.com

SHA-256 fingerprint

BE:E1:C7:AE:1C:7A:21:AC:98:1B:EF:74:B6:F5:03:C9:3A:B5:DA:FB:9D:E1:94:2C:2A:0F:CB:88:44:0A:FC:F4
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
B4:2E:0F:EA:14:33:41:10:BC:47:F0:6C:68:A4:90:23:11:4E:3D:CB
authorityKeyIdentifier
66:69:49:D4:DE:2A:9C:91:03:CF:89:0E:24:B8:0E:30:03:6E:88:2E
authorityInfoAccess
CA Issuers - URI:http://i.pki.goog/wr1.crt
subjectAltName
DNS:*.redirect.overdrive.com, DNS:*.overdrive.com, DNS:*.lib.overdrive.com, DNS:*.libraryreserve.com, DNS:overdrive.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://c.pki.goog/wr1/Eh01MIRaU0Y.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Sep 14 17:56:04.621 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:EA:E4:E7:68:3D:70:DE:21:9E:A5:96: 77:E6:31:AC:68:2C:2A:EB:DE:B4:09:83:90:97:BE:CB: C3:E9:E6:7B:44:02:21:00:85:AB:65:92:47:90:93:81: 99:39:20:ED:05:CF:01:FD:C3:4A:4A:F2:20:3B:9E:33: 4D:D2:2A:F9:DD:38:E0:15 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 74:DB:9D:58:F7:D4:7E:9D:FD:78:7A:16:2A:99:1C:18: CF:69:8D:A7:C7:29:91:8C:9A:18:B0:45:0D:BA:44:BC Timestamp : Sep 14 17:56:04.720 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:FC:A1:31:ED:29:47:46:AE:A2:74:B4: C6:7A:7E:F5:D5:C9:E7:5C:40:B4:8B:F2:64:FE:1D:AE: 5D:16:0B:0A:F1:02:20:1F:A6:44:1B:E8:2B:8E:8A:5C: 23:68:AB:FE:50:2E:F2:77:13:EA:6B:55:71:4E:49:51: 30:6D:80:6E:0B:CA:CD
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-11-03T08:50:39+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Google Trust Services CN=WR1
Issuer
C=US O=Google Trust Services LLC CN=GTS Root R1
Valid from
2023-12-13T09:00:00+00:00
Expires
2029-02-20T14:00:00+00:00
Days remaining
840
Serial (hex)
7FD9E2C2D2048A0474B627A26D0868A7
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

B1:0B:6F:00:E6:09:50:9E:87:00:F6:D3:46:87:A2:BF:CE:38:EA:05:A8:FD:F1:CD:C4:0C:3A:2A:0D:0D:0E:45
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
66:69:49:D4:DE:2A:9C:91:03:CF:89:0E:24:B8:0E:30:03:6E:88:2E
authorityKeyIdentifier
E4:AF:2B:26:71:1A:2B:48:27:85:2F:52:66:2C:EF:F0:89:13:71:3E
authorityInfoAccess
CA Issuers - URI:http://i.pki.goog/r1.crt
crlDistributionPoints
Full Name: URI:http://c.pki.goog/r/r1.crl
certificatePolicies
Policy: 2.23.140.1.2.1
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=Google Trust Services LLC CN=GTS Root R1
Issuer
C=BE O=GlobalSign nv-sa OU=Root CA CN=GlobalSign Root CA
Valid from
2020-06-19T00:00:42+00:00
Expires
2028-01-28T00:00:42+00:00
Days remaining
450
Serial (hex)
77BD0D6CDB36F91AEA210FC4F058D30D
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

3E:E0:27:8D:F7:1F:A3:C1:25:C4:CD:48:7F:01:D7:74:69:4E:6F:C5:7E:0C:D9:4C:24:EF:D7:69:13:39:18:E5
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
E4:AF:2B:26:71:1A:2B:48:27:85:2F:52:66:2C:EF:F0:89:13:71:3E
authorityKeyIdentifier
60:7B:66:1A:45:0D:97:CA:89:50:2F:7D:04:CD:34:A8:FF:FC:FD:4B
authorityInfoAccess
OCSP - URI:http://ocsp.pki.goog/gsr1 CA Issuers - URI:http://pki.goog/gsr1/gsr1.crt
crlDistributionPoints
Full Name: URI:http://crl.pki.goog/gsr1/gsr1.crl
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 1.3.6.1.4.1.11129.2.5.3.2 Policy: 1.3.6.1.4.1.11129.2.5.3.3
-----BEGIN CERTIFICATE-----
MIIFYjCCBEqgAwIBAgIQd70NbNs2+RrqIQ/E8FjTDTANBgkqhkiG9w0BAQsFADBX
MQswCQYDVQQGEwJCRTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTEQMA4GA1UE
CxMHUm9vdCBDQTEbMBkGA1UEAxMSR2xvYmFsU2lnbiBSb290IENBMB4XDTIwMDYx
OTAwMDA0MloXDTI4MDEyODAwMDA0MlowRzELMAkGA1UEBhMCVVMxIjAgBgNVBAoT
GUdvb2dsZSBUcnVzdCBTZXJ2aWNlcyBMTEMxFDASBgNVBAMTC0dUUyBSb290IFIx
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAthECix7joXebO9y/lD63
ladAPKH9gvl9MgaCcfb2jH/76Nu8ai6Xl6OMS/kr9rH5zoQdsfnFl97vufKj6bwS
iV6nqlKr+CMny6SxnGPb15l+8Ape62im9MZaRw1NEDPjTrETo8gYbEvs/AmQ351k
KSUjB6G00j0uYODP0gmHu81I8E3CwnqIiru6z1kZ1q+PsAewnjHxgsHA3y6mbWwZ
DrXYfiYaRQM9sHmklCitD38m5agI/pboPGiUU+6DOogrFZYJsuB6jC511pzrp1Zk
j5ZPaK49l8KEj8C8QMALXL32h7M1bKwYUH+E4EzNktMg6TO8UpmvMrUpsyUqtEj5
cuHKZPfmghCN6J3Cioj6OGaK/GP5Afl4/Xtcd/p2h/rs37EOeZVXtL0m79YB0esW
CruOC7XFxYpVq9Os6pFLKcwZpDIlTirxZUTQAs6qzkm06p98g7BAe+dDq6dso499
iYH6TKX/1Y7DzkvgtdizjkXPdsDtQCv9Uw+wp9U7DbGKogPeMa3Md+pvez7W35Ei
Eua++tgy/BBjFFFy3l3WFpO9KWgz7zpm7AeKJt8T11dleCfeXkkUAKIAf5qoIbap
sZWwpbkNFhHax2xIPEDgfg1azVY80ZcFuctL7TlLnMQ/0lUTbiSw1nH69MG6zO0b
9f6BQdgAmD06yK56mDcYBZUCAwEAAaOCATgwggE0MA4GA1UdDwEB/wQEAwIBhjAP
BgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBTkrysmcRorSCeFL1JmLO/wiRNxPjAf
BgNVHSMEGDAWgBRge2YaRQ2XyolQL30EzTSo//z9SzBgBggrBgEFBQcBAQRUMFIw
JQYIKwYBBQUHMAGGGWh0dHA6Ly9vY3NwLnBraS5nb29nL2dzcjEwKQYIKwYBBQUH
MAKGHWh0dHA6Ly9wa2kuZ29vZy9nc3IxL2dzcjEuY3J0MDIGA1UdHwQrMCkwJ6Al
oCOGIWh0dHA6Ly9jcmwucGtpLmdvb2cvZ3NyMS9nc3IxLmNybDA7BgNVHSAENDAy
MAgGBmeBDAECATAIBgZngQwBAgIwDQYLKwYBBAHWeQIFAwIwDQYLKwYBBAHWeQIF
AwMwDQYJKoZIhvcNAQELBQADggEBADSkHrEoo9C0dhemMXoh6dFSPsjbdBZBiLg9
NR3t5P+T4Vxfq7vqfM/b5A3Ri1fyJm9bvhdGaJQ3b2t6yMAYN/olUazsaL+yyEn9
WprKASOshIArAoyZl+tJaox118fessmXn1hIVw41oeQa1v1vg4Fv74zPl6/AhSrw
9U5pCZEt4Wi4wStz6dTZ/CLANx8LZh1J7QJVj2fhMtfTJr9w4z30Z209fOU0iOMy
+qduBmpvvYuR7hZL6Dupszfnw0Skfths18dG9ZKb59UhvmaSGZRVbNQpsg3BZlvi
d0lIKO2d1xozclOzgjXPYovJJIultzkMu34qQb9Sz/yilrbCgj8=
-----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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