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

TLSv1.2

ptisp.pt · 185.15.23.234:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
businessCategory=Private Organization serialNumber=502665696 jurisdictionC=PT C=PT ST=Santarém L=Abrantes O=ALMOUROLTEC - SERVIÇOS DE INFORMÁTICA E INTERNET UNIPESSOAL LDA CN=www.ptisp.pt
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R3 EV TLS CA 2025
Valid from
2026-02-13T17:20:24+00:00
Expires
2027-03-17T17:20:23+00:00
Days remaining
164
Serial (hex)
5F00ECC4AB773FC0F1DF744A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.ptisp.pt, DNS:www.ptisp.com, DNS:my.ptisp.pt, DNS:ptisp.pt

SHA-256 fingerprint

C5:AA:3F:D9:0A:4F:15:2A:7C:4B:24:1A:DC:E6:C0:08:EB:8C:86:D2:30:67:8D:17:4A:B5:C0:97:6F:54:0F:C2
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsgccr3evtlsca2025.crt OCSP - URI:http://ocsp.globalsign.com/gsgccr3evtlsca2025
certificatePolicies
Policy: 2.23.140.1.1 Policy: 1.3.6.1.4.1.4146.10.1.1 CPS: https://www.globalsign.com/repository/ Policy: 1.3.6.1.4.1.4146.1.1
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsgccr3evtlsca2025.crl
subjectAltName
DNS:www.ptisp.pt, DNS:www.ptisp.com, DNS:my.ptisp.pt, DNS:ptisp.pt
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
63:10:7F:E4:28:33:9A:F8:47:60:59:52:7E:57:10:C7:4D:F8:17:16
subjectKeyIdentifier
F9:1D:79:A3:99:3B:47:F2:23:AD:BE:71:90:4F:CF:5B:82:9F:D4:EB
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 13 17:20:29.907 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:95:CA:2E:D7:AD:62:85:22:7C:0E:A4: 15:4D:2B:CE:D1:B1:04:09:68:E2:BC:7E:27:A4:A1:4B: BD:CD:17:ED:08:02:21:00:C2:FE:6E:14:C2:9D:1D:52: 4D:19:C0:2B:DB:75:BF:B6:99:BC:A7:23:A1:83:AD:16: 93:7E:A1:56:41:04:A3:0B Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Feb 13 17:20:29.774 2026 GMT Extensions: 00:00:05:00:02:AF:9A:88 Signature : ecdsa-with-SHA256 30:46:02:21:00:8F:5B:AE:3E:7E:D2:40:FA:68:0F:61: A2:2D:15:A0:60:77:75:88:A8:16:D9:BA:65:B7:9F:B4: 12:01:7D:83:DE:02:21:00:F2:FB:90:F9:25:DA:B7:0A: 85:C4:30:2D:48:0D:B1:31:81:7A:B6:D1:25:BE:90:3A: 5E:4F:AA:00:90:F2:75:BD 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 13 17:20:29.156 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:AB:13:19:C5:9C:21:32:66:0F:DC:20: C2:46:25:27:8B:4A:8A:E5:2C:11:46:08:95:2B:B0:1D: F3:3F:6D:10:7B:02:20:00:83:60:58:96:D0:79:13:E1: 7D:34:CA:94:EA:7E:6A:D6:22:28:98:6A:7E:77:08:B3: DE:32:05:B3:0C:D2:4A
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-04T10:59:29+00:00

Server-presented chain · 1 additional certificate

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
228
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-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

Registration / WHOIS →DNS records →