TCP Port Scanner.

POST https://port-scanner.underscoredone.com/scan ↗

Give this API a hostname or IP address and it will try connecting to each port in your requested range. For every port that answers, it tells you whether it is open or blocked, which service is likely running there (like a web server or SSH), and what software version was detected. This saves you from installing network tools, parsing messy command-line output, or writing socket loops yourself. Only scan hosts you own or have permission to scan — this tool does not check that for you.

Eligibility: unprobeable
Failures: 0
Last quote: —
Last probe: —

Payment requirements / accepts[] 2 options

State	Network	Scheme	Atomic amount	Asset	payTo / untrusted
active	eip155:8453	exact	10000	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08
active	solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp	exact	10000	EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v	8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b

All advertised payment options are stored. Base (`eip155:8453`) is the operational network for ranking and canaries; non-Base options remain visible for transparency.

Probe evidence 0 recent

No probe attempts recorded yet. Coverage runs prioritize never-probed endpoints.

Machine contract

Schemas.

InputJSON

{
  "body": {
    "ports": "1-1000",
    "scan_type": "tcp_connect",
    "target": "scanme.nmap.org",
    "timeout": 30
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

OutputJSON

{
  "example": {
    "api_version": "1.0.0",
    "closed_or_filtered_count": 998,
    "complete": true,
    "duration_ms": 4521,
    "open_ports": [
      {
        "port": 22,
        "protocol": "tcp",
        "service": "ssh",
        "state": "open",
        "version": "OpenSSH 8.2p1"
      },
      {
        "port": 80,
        "protocol": "tcp",
        "service": "http",
        "state": "open",
        "version": "Apache httpd 2.4.41"
      }
    ],
    "ports_requested": 1000,
    "ports_scanned": 1000,
    "resolved_ip": "45.33.32.156",
    "scan_type": "tcp_connect",
    "target": "scanme.nmap.org",
    "warning": ""
  },
  "type": "json"
}