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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

TLSv1.2

flockmail.com · 184.196.87.219:443

Verified

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

Subject
CN=*.flockmail.com
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M04
Valid from
2026-02-01T00:00:00+00:00
Expires
2027-03-01T23:59:59+00:00
Days remaining
113
Serial (hex)
0DB4315B4CDFB218DAF63D4D54BBABA5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.flockmail.com, DNS:flockmail.com

SHA-256 fingerprint

32:A6:F8:6E:BD:3C:F0:43:F8:A1:3D:EA:EE:1B:14:88:94:44:AD:8D:01:42:A4:34:BB:77:30:DB:50:C7:90:63
Certificate extensions & PEM
authorityKeyIdentifier
1F:52:92:61:56:82:54:7F:81:66:D8:1D:3D:0A:AA:32:5C:87:DD:08
subjectKeyIdentifier
A8:01:75:6A:D3:3F:9E:1A:FB:D3:7F:9B:5B:40:E5:67:61:2C:D8:89
subjectAltName
DNS:*.flockmail.com, DNS:flockmail.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.r2m04.amazontrust.com/r2m04.crl
authorityInfoAccess
OCSP - URI:http://ocsp.r2m04.amazontrust.com CA Issuers - URI:http://crt.r2m04.amazontrust.com/r2m04.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 : Feb 1 03:22:22.360 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:E8:CA:D5:89:7A:6F:B2:5F:EA:96:E5: 96:99:BA:F7:45:4E:3D:36:01:F4:C4:BD:DE:C5:DC:D7: F7:6E:D6:87:25:02:21:00:CD:1D:60:67:C4:3C:4F:1A: 83:B3:0C:6C:7A:F1:08:FE:58:34:EC:25:8C:51:9B:14: FD:5D:1C:0C:E3:56:5D:6D 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 : Feb 1 03:22:22.349 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:77:97:29:41:50:2D:50:AF:02:8F:A3:C9: 00:F8:DC:AD:0B:E4:89:DD:F6:CC:16:24:D4:80:D3:5F: D4:BA:6A:1F:02:21:00:D0:F6:9A:1F:A0:44:02:D5:32: 08:0F:72:5C:0C:C9:52:A8:1E:3E:F6:73:26:16:7C:BE: 36:5E:05:05:E4:96:23 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 : Feb 1 03:22:22.597 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:4A:F0:1C:71:1C:AF:8A:00:85:29:F7:90: C0:10:BD:E5:B5:79:BF:44:5A:97:E4:CA:95:C4:85:8A: 5E:52:D2:78:02:21:00:D7:7D:CD:15:11:96:50:EF:C1: 1D:91:45:0E:D9:6E:B2:3B:A3:0A:52:09:E7:3E:2E:3E: 88:1A:D8:D5:AB:F2:E7
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-11-08T11:03:09+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Amazon CN=Amazon RSA 2048 M04
Issuer
C=US O=Amazon CN=Amazon Root CA 1
Valid from
2022-08-23T22:26:35+00:00
Expires
2030-08-23T22:26:35+00:00
Days remaining
1384
Serial (hex)
0773124F2A952E3ED18A58BDB85D1BC0CE5F27
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:8B:DF:6E:23:AC:97:1E:B4:E6:26:B2:79:DD:6A:26:F0:57:51:0F:1D:E3:94:29:3A:5E:EA:28:60:DE:01:9B
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
1F:52:92:61:56:82:54:7F:81:66:D8:1D:3D:0A:AA:32:5C:87:DD:08
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
4070
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

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