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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

altium.com · 3.173.161.68:443

Verified

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

Subject
CN=*.altium.com
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M01
Valid from
2026-01-24T00:00:00+00:00
Expires
2027-02-22T23:59:59+00:00
Days remaining
144
Serial (hex)
0A56F56E4E40FD39B306AD71FE9CD78C
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.altium.com, DNS:altium.com

SHA-256 fingerprint

73:6B:4C:77:55:23:F1:D2:E4:83:52:F3:BC:E4:E2:83:AF:4C:24:B6:D6:B8:1A:86:F9:B3:B4:27:53:03:5B:11
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
AB:C3:39:AD:D5:67:41:96:2E:97:FF:19:B6:59:06:EE:5F:B7:2E:65
subjectAltName
DNS:*.altium.com, DNS:altium.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 : Jan 24 04:07:19.532 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:04:6B:0D:77:DA:B9:37:2F:87:37:39:99: 28:65:D1:E5:B3:DB:A7:8D:9F:F9:16:26:6C:B1:10:FB: 1A:43:45:36:02:21:00:9B:14:CE:CB:3E:82:AD:83:E2: E3:ED:85:15:F0:F1:6E:85:C7:E9:D3:79:EE:BB:5C:A9: 47:39:7C:75:59:52:BB 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 : Jan 24 04:07:19.565 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:0D:6C:A4:8D:1C:5D:E3:E7:43:EB:2F:BA: BD:BE:D2:4A:89:6F:9D:B6:F9:2E:97:D5:09:19:26:5B: 23:C8:2F:B9:02:21:00:AA:75:98:1F:40:6B:4E:F6:DC: 04:42:8B:56:4D:2E:1F:EB:B6:27:8B:0A:8D:99:18:EE: A9:48:D9:B1:C0:30:14 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Jan 24 04:07:19.719 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D9:AE:35:91:90:5E:4B:D3:A5:5C:22: 4C:BB:01:CA:F4:C5:F5:DA:0C:DF:B4:DA:EE:5E:84:12: 53:7F:F8:CB:48:02:21:00:BE:23:0F:F1:08:A8:74:DB: 1E:58:0A:4E:30:82:65:9A:EB:60:BA:E3:53:55:F3:84: 6B:9E:E5:BB:69:F5:C5:86
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-01T05:26:32+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
1422
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
4108
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.

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