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

a1.by · 37.17.95.116:443

Verified

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

Subject
CN=*.a1.by
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R6 AlphaSSL CA 2025
Valid from
2026-02-20T06:05:10+00:00
Expires
2027-03-24T06:05:09+00:00
Days remaining
179
Serial (hex)
686845730D4B963B6562EA8A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.a1.by, DNS:a1.by

SHA-256 fingerprint

E4:D1:1F:39:D1:BA:49:22:44:14:29:41:C4:FA:04:E4:C7:56:FC:EC:E9:51:14:05:2A:7D:A5:71:AF:94:FF:25
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsgccr6alphasslca2025.crt OCSP - URI:http://ocsp.globalsign.com/gsgccr6alphasslca2025
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.4146.10.1.3 CPS: https://www.globalsign.com/repository/
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsgccr6alphasslca2025.crl
subjectAltName
DNS:*.a1.by, DNS:a1.by
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
C5:B4:93:8F:6F:2B:DC:1E:48:BF:B7:10:30:85:CE:D1:B2:BB:48:2D
subjectKeyIdentifier
49:92:8C:8A:2F:C2:3B:9E:40:84:2D:93:C9:B1:D0:D4:28:DC:4A:8C
ct_precert_scts
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 20 06:05:13.316 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:CB:35:05:B1:36:BA:32:2C:F5:1D:05: E3:25:01:B6:C6:09:21:6B:D5:8E:F0:71:75:FF:14:C6: 90:D2:33:E4:D7:02:21:00:E2:94:53:44:81:8E:0E:04: 65:A9:43:2F:5C:78:6C:8A:7C:5C:44:F9:6B:82:8F:B5: C4:A3:B9:D7:6E:C3:25:4F 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 20 06:05:13.279 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:DE:79:E8:D8:96:EA:B7:EF:8F:A2:AF: 93:A9:C7:5A:BA:4E:0E:40:05:99:46:76:74:2E:A4:6F: EA:9A:23:A1:24:02:21:00:82:10:51:26:6D:18:EC:E0: 00:46:D9:BF:85:54:9A:87:E7:B0:87:76:E6:5B:ED:76: 9B:D7:28:03:80:73:70:F0 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 20 06:05:13.484 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:D1:A4:10:E6:3A:65:24:53:42:B5:2B: 34:BB:87:C0:3F:DC:84:71:06:5D:CF:77:15:8F:E4:D2: AA:EE:EF:3F:C1:02:21:00:A4:53:5D:2A:EB:E3:7F:0A: 89:B5:F5:77:75:CC:3B:65:66:A7:C2:53:44:A5:80:29: 5E:4A:A0:3C:C0:ED:07:C6
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-26T02:23:13+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R6 AlphaSSL CA 2025
Issuer
OU=GlobalSign Root CA - R6 O=GlobalSign CN=GlobalSign
Valid from
2025-05-21T02:36:52+00:00
Expires
2027-05-21T00:00:00+00:00
Days remaining
236
Serial (hex)
837D4EB89E912FE72CAD3BC7692DDC20
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

A8:83:55:92:31:F8:38:8D:AF:35:CE:41:C8:10:10:40:AE:8F:D9:B6:56:43:42:47:B9:47:5A:F5:92:CC:08:CA
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
C5:B4:93:8F:6F:2B:DC:1E:48:BF:B7:10:30:85:CE:D1:B2:BB:48:2D
authorityKeyIdentifier
AE:6C:05:A3:93:13:E2:A2:E7:E2:D7:1C:D6:C7:F0:7F:C8:67:53:A0
authorityInfoAccess
OCSP - URI:http://ocsp2.globalsign.com/rootr6 CA Issuers - URI:http://secure.globalsign.com/cacert/root-r6.crt
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root-r6.crl
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.4146.10.1.3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
OU=GlobalSign Root CA - R6 O=GlobalSign CN=GlobalSign
Issuer
C=BE O=GlobalSign nv-sa OU=Root CA CN=GlobalSign Root CA
Valid from
2019-06-19T00:00:00+00:00
Expires
2028-01-28T12:00:00+00:00
Days remaining
489
Serial (hex)
751E3F5649E74CBBF69D0026B67CAA8C
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:4E:13:78:B9:74:A9:91:AC:DC:DD:73:34:21:E3:06:1E:6F:A2:1A:04:91:C8:90:2B:AF:DE:38:55:E0:06:3E
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
AE:6C:05:A3:93:13:E2:A2:E7:E2:D7:1C:D6:C7:F0:7F:C8:67:53:A0
authorityKeyIdentifier
60:7B:66:1A:45:0D:97:CA:89:50:2F:7D:04:CD:34:A8:FF:FC:FD:4B
authorityInfoAccess
OCSP - URI:http://ocsp.globalsign.com/rootr1
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.globalsign.com/repository/
-----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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