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

zmail.ptcl.net.pk · 59.103.248.24:443

Verified

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

Subject
C=PK L=Islamabad O=Pakistan Telecommunication Company Limited CN=*.ptcl.net.pk
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2025-10-09T00:00:00+00:00
Expires
2026-11-02T23:59:59+00:00
Days remaining
34
Serial (hex)
086C6E77439C0148CCAC3BB33AA2EC8B
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.ptcl.net.pk, DNS:ptcl.net.pk

SHA-256 fingerprint

3A:01:B4:69:AD:22:1D:27:E5:69:73:79:69:1E:3D:19:87:45:0F:D1:73:AE:39:02:3D:B9:F1:5D:4B:B5:EF:29
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
25:31:9C:16:98:80:5B:A6:8D:16:31:E6:50:44:20:BB:E2:74:E7:D4
subjectAltName
DNS:*.ptcl.net.pk, DNS:ptcl.net.pk
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Oct 9 06:21:17.104 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:21:F0:B5:A7:C9:6F:20:07:83:3E:BD:6F: 08:9A:9F:FB:6F:1F:5E:A2:6A:36:0A:A0:CD:D0:C4:13: 2B:E9:1E:CD:02:21:00:95:1B:BE:3B:D9:0F:E6:6E:65: 38:A4:15:A9:FD:5C:07:43:0F:DD:EF:5C:DF:66:88:8A: 26:89:64:9A:D2:B2:9F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Oct 9 06:21:17.015 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:24:6B:17:55:11:AA:F5:9D:1E:BC:5B:6D: BF:8A:9A:79:8E:F7:5F:E4:B6:F9:87:77:9A:64:C4:37: E5:45:3A:1B:02:21:00:FE:E5:14:5C:0C:2B:3C:08:84: A2:04:70:46:70:60:8A:BD:72:C8:51:80:49:91:41:9E: E2:12:FC:DE:CC:75:D8 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Oct 9 06:21:17.032 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:A6:12:E5:46:B3:95:A5:34:18:6D:94: 39:5B:78:35:C1:D1:99:3F:AF:AA:AF:A0:97:83:6A:88: 1B:7D:E3:06:BB:02:20:32:04:D1:EB:BE:99:64:BD:A8: 76:88:22:1A:C4:98:BA:99:06:97:FB:E3:5F:D9:44:8D: 43:9F:18:28:0D:25:AA
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-29T22:58:18+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2021-03-30T00:00:00+00:00
Expires
2031-03-29T23:59:59+00:00
Days remaining
1642
Serial (hex)
0CF5BD062B5602F47AB8502C23CCF066
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:02:5F:9F:C6:5F:DF:C9:5B:3C:A8:CC:78:67:B9:A5:87:B5:27:79:73:95:79:17:46:3F:C8:13:D0:B6:25:A9
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3
-----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 →