HackerTarget TCP Port Scan
HackerTarget TCP Port Scan checks an IPv4 or IPv6 address for common open ports, helping assess an internet-facing service or firewall.
What HackerTarget TCP Port Scan is
HackerTarget TCP Port Scan checks an IPv4 or IPv6 address for common open ports, helping assess an internet-facing service or firewall. The free scan checks ports 21, 22, 23, 25, 80, 110, 143, 443, 445, and 3389. It uses Nmap with version detection disabled. HackerTarget’s advanced online scanner can scan an address or range across all 65,535 ports. The service is available on the web and through an API; a beta TCP scan API returns port status as plain text and can be called with curl or other HTTP-based software. HackerTarget also lists Splunk and Maltego integrations and a Chrome extension for its IP and DNS tools. Membership removes limits and CAPTCHA, while the TCP scan API is limited to 50 queries per day without full membership. Scheduled scans and API access are available. HackerTarget says scan results are stored securely for up to 12 months and may be accessed by internal staff for troubleshooting. Active scans should only target systems you have permission to scan.
Good
- Free scan covers ten common ports
- Accepts IPv4 and IPv6 addresses
- Advanced scanner covers all 65,535 ports
- Beta API returns port status as text
Watch out
- Free scan checks only ten listed ports
- API limited to 50 queries daily without full membership
- Version detection is disabled
Who it suits
This tool suits systems administrators, website owners, and security professionals checking internet-facing services or firewalls. Only scan systems you have permission to scan.
Verdict
HackerTarget provides a focused free port scan, with broader address or range scanning available through its advanced scanner. Keep the free scan’s port coverage and the API query limit in mind, and scan only systems you are authorized to assess.
Plans and prices
From HackerTarget TCP Port Scan's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Enterprise | $100 a month | 5,192+ IPs/day scanning · Zmap port scanner 100M+ · 200+ standard scans · Tools API 7,500+/day · From $100/mo |
| Starter | $120 a year | Nmap 64 IPs/day · OpenVAS 16 IPs/day · 16 standard scans/day · Tools API 500/day · $10/mo; billed annually @ $120 |
| Pro | $300 a year | All Starter scanners · scheduled Nmap and OpenVAS scans · increased scan quotas · Tools API 1,000/day · $25/mo; billed annually @ $300 |
| Business | $600 a year | All Pro scanners · Zmap port scanning · increased scan quotas · Tools API 2,000/day · $50/mo; billed annually @ $600 |
The facts
Each one read from HackerTarget TCP Port Scan's own pages, with the date it was checked.
What it does
- Account security
- All accounts may enable an authenticator app as a secondary form of authentication.checked 7 Oct 2026
- API
- A beta TCP scan API returns port status as text and can be called with curl or another HTTP based tool or software.checked 7 Oct 2026
- Input and coverage
- The page accepts IPv4 and IPv6 addresses, and says the advanced online scanner can scan an IP address or range across all 65,535 ports.checked 7 Oct 2026
- Integrations
- HackerTarget lists Splunk and Maltego integrations, plus an official Chrome extension, for its IP and DNS tools.checked 7 Oct 2026
- PCI compliance
- HackerTarget says its scans complement checklist-focused PCI compliance scans rather than serving as those scans.checked 7 Oct 2026
- Purpose
- The TCP Port Scan checks an IP address for common open ports to help determine the status of an internet-facing service or firewall.checked 7 Oct 2026
- Scanner
- The scan uses Nmap, with version detection (-sV) disabled.checked 7 Oct 2026
- Security and data
- HackerTarget says vulnerability scan results are stored securely for up to 12 months, may be accessed by internal staff for troubleshooting, and are not sold, shared, or published.checked 7 Oct 2026
- Support
- The company offers contact by form for questions or suggestions and says it serves customers in over 60 countries.checked 7 Oct 2026
- Use authorization
- HackerTarget says active scans should only target systems the user has permission to scan.checked 7 Oct 2026
- Who it serves
- The company says its scanning services are popular with systems administrators, website owners, and security professionals, with clients ranging from startups to Fortune 500 companies and government agencies.checked 7 Oct 2026
Money
- Free scan limits
- The page says membership removes limits and CAPTCHA; its TCP scan API is limited to 50 queries per day without full membership.checked 7 Oct 2026
- Free scan ports
- The free scan checks ports 21, 22, 23, 25, 80, 110, 143, 443, 445, and 3389.checked 7 Oct 2026
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