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

finnair.com · 18.238.243.20:443

Verified

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

Subject
CN=finnair.com
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M01
Valid from
2026-09-01T00:00:00+00:00
Expires
2027-03-17T23:59:59+00:00
Days remaining
142
Serial (hex)
0E60ED1DF1B19DBF64866D65DBE0C944
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:finnair.com

SHA-256 fingerprint

98:14:D9:AA:6C:98:58:50:BB:82:A2:15:12:91:FA:35:2A:B1:6E:BA:DE:85:8B:79:F3:63:CE:A6:4F:7B:88:EB
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
2A:FD:43:A1:F6:F2:99:37:82:D1:58:10:99:14:53:FB:F0:28:EE:87
subjectAltName
DNS:finnair.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 : Sep 1 11:54:53.501 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:A1:7D:DF:48:09:27:88:3A:77:77:6E: 83:8D:1F:E4:4E:45:14:59:46:AF:47:3B:8A:62:5F:AA: B5:A6:CC:FB:0D:02:21:00:CB:1F:26:5F:43:13:6F:E4: 80:2D:FE:9A:B7:8C:61:8A:16:80:83:8D:7C:78:14:7A: 7F:9B:E3:2E:48:FB:0A:37 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 : Sep 1 11:54:53.488 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:3F:6C:DC:67:E2:B1:12:3F:A6:F1:36:12: 19:AF:11:E2:A0:B3:05:74:5D:4A:77:90:40:B0:0D:9D: 77:0F:83:0D:02:20:10:D0:F8:6E:B3:47:84:64:67:F4: 4A:E0:68:52:E5:FC:EC:7B:BB:09:E5:68:2C:3E:41:91: 49:66:AE:12:AF:0C 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 : Sep 1 11:54:53.540 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:F9:4C:05:19:10:3C:28:0A:71:7A:20: 32:6B:67:A0:80:57:43:A1:7E:53:3C:05:48:65:F7:AF: 48:FE:AF:8D:66:02:21:00:83:BD:88:F1:47:58:1C:E8: 49:AA:F5:BF:2F:48:95:8D:CB:64:2B:B7:22:BD:62:C2: 3F:C6:2C:D4:38:B2:1A:8A
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-26T01:33:47+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
1397
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-----
MIIEXjCCA0agAwIBAgITB3MSOAudZoijOx7Zv5zNpo4ODzANBgkqhkiG9w0BAQsF
ADA5MQswCQYDVQQGEwJVUzEPMA0GA1UEChMGQW1hem9uMRkwFwYDVQQDExBBbWF6
b24gUm9vdCBDQSAxMB4XDTIyMDgyMzIyMjEyOFoXDTMwMDgyMzIyMjEyOFowPDEL
MAkGA1UEBhMCVVMxDzANBgNVBAoTBkFtYXpvbjEcMBoGA1UEAxMTQW1hem9uIFJT
QSAyMDQ4IE0wMTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAOtxLKnL
H4gokjIwr4pXD3i3NyWVVYesZ1yX0yLI2qIUZ2t88Gfa4gMqs1YSXca1R/lnCKeT
epWSGA+0+fkQNpp/L4C2T7oTTsddUx7g3ZYzByDTlrwS5HRQQqEFE3O1T5tEJP4t
f+28IoXsNiEzl3UGzicYgtzj2cWCB41eJgEmJmcf2T8TzzK6a614ZPyq/w4CPAff
nAV4coz96nW3AyiE2uhuB4zQUIXvgVSycW7sbWLvj5TDXunEpNCRwC4kkZjK7rol
jtT2cbb7W2s4Bkg3R42G3PLqBvt2N32e/0JOTViCk8/iccJ4sXqrS1uUN4iB5Nmv
JK74csVl+0u0UecCAwEAAaOCAVowggFWMBIGA1UdEwEB/wQIMAYBAf8CAQAwDgYD
VR0PAQH/BAQDAgGGMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAdBgNV
HQ4EFgQUgbgOY4qJEhjl+js7UJWf5uWQE4UwHwYDVR0jBBgwFoAUhBjMhTTsvAyU
lC4IWZzHshBOCggwewYIKwYBBQUHAQEEbzBtMC8GCCsGAQUFBzABhiNodHRwOi8v
b2NzcC5yb290Y2ExLmFtYXpvbnRydXN0LmNvbTA6BggrBgEFBQcwAoYuaHR0cDov
L2NydC5yb290Y2ExLmFtYXpvbnRydXN0LmNvbS9yb290Y2ExLmNlcjA/BgNVHR8E
ODA2MDSgMqAwhi5odHRwOi8vY3JsLnJvb3RjYTEuYW1hem9udHJ1c3QuY29tL3Jv
b3RjYTEuY3JsMBMGA1UdIAQMMAowCAYGZ4EMAQIBMA0GCSqGSIb3DQEBCwUAA4IB
AQCtAN4CBSMuBjJitGuxlBbkEUDeK/pZwTXv4KqPK0G50fOHOQAd8j21p0cMBgbG
kfMHVwLU7b0XwZCav0h1ogdPMN1KakK1DT0VwA/+hFvGPJnMV1Kx2G4S1ZaSk0uU
5QfoiYIIano01J5k4T2HapKQmmOhS/iPtuo00wW+IMLeBuKMn3OLn005hcrOGTad
hcmeyfhQP7Z+iKHvyoQGi1C0ClymHETx/chhQGDyYSWqB/THwnN15AwLQo0E5V9E
SJlbe4mBlqeInUsNYugExNf+tOiybcrswBy8OFsd34XOW3rjSUtsuafd9AWySa3h
xRRrwszrzX/WWGm6wyB+f7C4
-----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
4083
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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