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

expressvpn.com · 3.173.161.128:443

Verified

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

Subject
CN=expressvpn.com
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M01
Valid from
2026-08-14T00:00:00+00:00
Expires
2027-02-27T23:59:59+00:00
Days remaining
155
Serial (hex)
062915BC885A90122422DD94DC9046F1
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:expressvpn.com, DNS:www.expressvpn.com

SHA-256 fingerprint

A0:54:AB:A4:82:70:77:3C:1A:30:DE:54:7B:7F:61:2B:42:EC:2D:1F:CC:BA:B3:A0:4F:45:0B:54:17:99:24:01
Certificate extensions & PEM
authorityKeyIdentifier
81:B8:0E:63:8A:89:12:18:E5:FA:3B:3B:50:95:9F:E6:E5:90:13:85
subjectKeyIdentifier
C7:2C:44:AF:66:2B:4A:C8:BA:10:63:F9:AE:DA:8F:FC:D9:78:77:EF
subjectAltName
DNS:expressvpn.com, DNS:www.expressvpn.com
certificatePolicies
Policy: 2.23.140.1.2.1
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.r2m01.amazontrust.com/r2m01.crl
authorityInfoAccess
OCSP - URI:http://ocsp.r2m01.amazontrust.com CA Issuers - URI:http://crt.r2m01.amazontrust.com/r2m01.cer
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 14 10:09:43.887 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:82:63:8D:3F:02:CA:B5:9A:0A:D1:EB: E2:00:61:13:7E:FB:06:E1:EA:45:1A:45:66:14:C3:04: 93:C2:0B:74:EF:02:21:00:84:58:B6:53:66:8C:F1:AF: 22:49:F4:65:6F:51:09:5D:A5:F5:96:A6:14:5F:6F:20: A0:E3:DC:40:4F:36:54:E7 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 14 10:09:43.985 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:6F:B0:00:50:2B:2E:42:A7:0C:B1:EA:DC: 6A:BC:C0:17:0E:60:32:57:0F:DA:0C:77:FE:DE:15:30: 01:BD:4C:AD:02:20:0E:2C:14:3D:83:FC:49:28:57:6D: FD:07:23:9F:4C:13:A8:73:BB:6A:66:39:F4:1D:6F:2E: A3:DC:AA:47:7E:6B Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Aug 14 10:09:44.024 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:FB:A1:E5:A9:67:87:4D:29:53:B2:49: BC:78:33:AC:7C:CE:EE:ED:8A:7A:9E:F0:0B:F7:46:CC: 25:E0:32:25:AD:02:20:37:12:70:46:66:91:74:52:D2: AE:A9:97:B3:84:DA:DE:3B:BD:5C:24:5B:42:69:51:08: D9:09:EC:CA:96:02:98
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-25T00:09:10+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Amazon CN=Amazon RSA 2048 M01
Issuer
C=US O=Amazon CN=Amazon Root CA 1
Valid from
2022-08-23T22:21:28+00:00
Expires
2030-08-23T22:21:28+00:00
Days remaining
1428
Serial (hex)
077312380B9D6688A33B1ED9BF9CCDA68E0E0F
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

53:38:EB:EC:8F:B2:AC:60:99:61:26:D3:E7:6A:A3:4F:D0:F3:31:8A:C7:8E:BB:7A:C8:F6:F1:36:1F:48:4B:33
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
subjectKeyIdentifier
81:B8:0E:63:8A:89:12:18:E5:FA:3B:3B:50:95:9F:E6:E5:90:13:85
authorityKeyIdentifier
84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08
authorityInfoAccess
OCSP - URI:http://ocsp.rootca1.amazontrust.com CA Issuers - URI:http://crt.rootca1.amazontrust.com/rootca1.cer
crlDistributionPoints
Full Name: URI:http://crl.rootca1.amazontrust.com/rootca1.crl
certificatePolicies
Policy: 2.23.140.1.2.1
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=Amazon CN=Amazon Root CA 1
Issuer
C=US ST=Arizona L=Scottsdale O=Starfield Technologies, Inc. CN=Starfield Services Root Certificate Authority - G2
Valid from
2015-05-25T12:00:00+00:00
Expires
2037-12-31T01:00:00+00:00
Days remaining
4115
Serial (hex)
067F944A2A27CDF3FAC2AE2B01F908EEB9C4C6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

87:DC:D4:DC:74:64:0A:32:2C:D2:05:55:25:06:D1:BE:64:F1:25:96:25:80:96:54:49:86:B4:85:0B:C7:27:06
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08
authorityKeyIdentifier
9C:5F:00:DF:AA:01:D7:30:2B:38:88:A2:B8:6D:4A:9C:F2:11:91:83
authorityInfoAccess
OCSP - URI:http://ocsp.rootg2.amazontrust.com CA Issuers - URI:http://crt.rootg2.amazontrust.com/rootg2.cer
crlDistributionPoints
Full Name: URI:http://crl.rootg2.amazontrust.com/rootg2.crl
certificatePolicies
Policy: X509v3 Any Policy
-----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 →