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

asahi-net.jp · 18.239.69.64:443

Verified

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

Subject
CN=*.asahi-net.jp
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M04
Valid from
2026-09-24T00:00:00+00:00
Expires
2027-04-09T23:59:59+00:00
Days remaining
171
Serial (hex)
0B28C3F088517DA641D435D7071D4CA7
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.asahi-net.jp, DNS:asahi-net.jp

SHA-256 fingerprint

FB:32:AC:D6:74:E1:2A:8E:FD:DE:56:59:13:E6:97:2B:92:22:BD:0E:6D:FD:BF:A7:14:28:1D:55:BF:FC:74:C3
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
36:55:70:13:59:99:14:1D:42:1F:D0:9C:48:CF:9C:D0:67:51:E0:D6
subjectAltName
DNS:*.asahi-net.jp, DNS:asahi-net.jp
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 : Sep 24 06:56:37.391 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:76:30:43:25:FD:DB:09:3E:02:4B:4E:F9: AE:50:6A:EF:97:A0:3F:53:89:19:CA:8B:1A:34:04:10: 76:C8:BA:B0:02:21:00:A1:43:26:B4:7B:2D:51:46:FB: BA:F8:8D:80:7F:81:66:E1:BC:57:99:32:B8:59:AE:28: 9C:F2:82:5F:B3:AF:DC 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 24 06:56:37.434 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:95:A6:CE:91:DE:15:1D:19:40:8D:3F: 9E:B9:62:35:A1:6E:8D:D7:3C:A1:AD:2F:76:8A:3F:7E: B3:DF:ED:AE:33:02:20:3A:66:EC:AF:D7:8F:3B:74:EC: F0:B8:11:19:AC:AE:69:71:0F:1F:AB:CE:9A:2E:2E:D3: F7:BE:2F:EE:93:FF:21 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 : Sep 24 06:56:37.623 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:AD:D9:FC:4D:07:5D:F7:03:70:B1:4A: 3A:0E:DB:94:86:14:56:20:63:A1:09:FD:30:A0:A8:88: 05:39:6C:2C:A7:02:20:29:D1:66:F1:C6:22:F9:FD:AC: 70:AF:DD:E5:77:15:63:D4:79:AC:19:DA:FF:CA:F5:D5: 92:7E:A3:92:D0:16:FC
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-20T04:02:27+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
1403
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
4089
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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