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

mail.ptservidor.pt · 185.32.188.217:443

Verified

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

Subject
CN=firewall.pt
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-08T20:07:20+00:00
Expires
2027-01-06T20:07:19+00:00
Days remaining
86
Serial (hex)
063A981A470CEAD32919D1002003D20D50F5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.alojagratis.org, DNS:*.as62416.net, DNS:*.firewall.pt, DNS:*.ftp.pt, DNS:*.lusopt.info, DNS:*.moodle.pt, DNS:*.ptservido.pt, DNS:*.ptservidor.biz, DNS:*.ptservidor.cc, DNS:*.ptservidor.com.pt, DNS:*.ptservidor.cv, DNS:*.ptservidor.gw, DNS:*.ptservidor.org.pt, DNS:*.ptservidor.pt, DNS:*.ptservidores.eu, DNS:*.tugaserv.com, DNS:alojagratis.org, DNS:as62416.net, DNS:firewall.pt, DNS:ftp.pt, DNS:lusopt.info, DNS:moodle.pt, DNS:ptservido.pt, DNS:ptservidor.biz, DNS:ptservidor.cc, DNS:ptservidor.com.pt, DNS:ptservidor.cv, DNS:ptservidor.gw, DNS:ptservidor.org.pt, DNS:ptservidor.pt, DNS:ptservidores.eu, DNS:tugaserv.com

SHA-256 fingerprint

73:4F:4F:7C:F3:F4:7D:1B:F0:DD:97:63:29:1D:65:5D:F0:02:C4:C1:95:2F:29:B0:6E:98:2C:02:75:E3:E5:77
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
15:BA:E2:F2:C9:58:5D:D0:7F:12:63:95:90:6F:90:C3:72:1F:47:74
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:*.alojagratis.org, DNS:*.as62416.net, DNS:*.firewall.pt, DNS:*.ftp.pt, DNS:*.lusopt.info, DNS:*.moodle.pt, DNS:*.ptservido.pt, DNS:*.ptservidor.biz, DNS:*.ptservidor.cc, DNS:*.ptservidor.com.pt, DNS:*.ptservidor.cv, DNS:*.ptservidor.gw, DNS:*.ptservidor.org.pt, DNS:*.ptservidor.pt, DNS:*.ptservidores.eu, DNS:*.tugaserv.com, DNS:alojagratis.org, DNS:as62416.net, DNS:firewall.pt, DNS:ftp.pt, DNS:lusopt.info, DNS:moodle.pt, DNS:ptservido.pt, DNS:ptservidor.biz, DNS:ptservidor.cc, DNS:ptservidor.com.pt, DNS:ptservidor.cv, DNS:ptservidor.gw, DNS:ptservidor.org.pt, DNS:ptservidor.pt, DNS:ptservidores.eu, DNS:tugaserv.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/118.crl
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 : Oct 8 21:05:50.653 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:88:0F:A6:29:52:54:9B:50:09:B3:75: 1A:DD:6A:36:50:54:99:3D:95:43:57:02:42:F1:51:E9: 83:25:79:38:5B:02:21:00:9E:3D:E7:B5:0F:5A:47:EC: 07:17:FF:C2:7E:E9:7F:D7:6E:17:CB:B4:02:23:3D:F8: 2C:99:48:0E:36:01:4E:5D 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 : Oct 8 21:05:50.861 2026 GMT Extensions: 00:00:05:00:1F:5C:FD:AC Signature : ecdsa-with-SHA256 30:44:02:20:03:DC:FA:BE:0A:7E:B9:35:BA:F3:8D:64: 31:C9:D3:F9:64:DF:6A:B5:D3:6B:DD:84:70:68:09:A6: 17:EC:08:4B:02:20:48:09:98:3D:7C:B3:D3:A4:AC:2C: 4B:DA:EC:7D:02:FC:25:2D:07:77:51:F4:EE:D8:E3:F9: 32:76:BD:5E:E2:24
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-12T08:32:26+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
691
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2152
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----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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