# ISP.Tools

> Free distributed network diagnostic tools for ISPs: ping, MTR, DNS, smokeping, MTU detect, portscan and more, run from probes worldwide.

ISP.Tools is a Brazilian platform for fast, reliable external network testing, measuring your network from the outside since 2014. Every diagnostic tool below is free for everyone — paid plans only add white-label branding to shared and printed test reports for ISPs, never access to the tools themselves. The full toolkit is also exposed directly to AI assistants via the Model Context Protocol (MCP); see "MCP for AI" below.

## Tools

- [Ping](https://www.isp.tools/ping): Measure latency and jitter to your target from distributed probes worldwide.
- [MTR](https://www.isp.tools/mtr): Hop-by-hop traceroute analysis with per-hop latency and loss across the selected route.
- [Smokeping](https://www.isp.tools/smokeping): Track long-horizon latency, jitter bands and packet loss trends over time.
- [MTU Detect](https://www.isp.tools/mtu): Detect the effective path MTU and compare consistency between probe locations.
- [Portscan](https://www.isp.tools/portscan): Scan common or custom TCP and UDP ports from distributed probes.
- [DNS](https://www.isp.tools/dns): Query DNS records from multiple probes to confirm consistency and propagation.
- [HTTP/SSL](https://www.isp.tools/httpssl): HTTP status, redirects and certificate checks from distributed probes.
- [My IP](https://www.isp.tools/myip): Your current internet identity as seen externally.
- [IP Calc](https://www.isp.tools/ipcalc): Calculate networks, masks and hosts for IPv4 and IPv6 CIDR blocks, split them into subnets, find supernets and deaggregate IP ranges.
- [IP Extractor](https://www.isp.tools/ipextract): Extract IPv4 and IPv6 addresses from pasted text, logs or uploaded files.
- [MCP for AI](https://www.isp.tools/mcp): Run the ISP.Tools network toolkit — ping, MTR, DNS, port scan and more — directly inside your AI assistant via the Model Context Protocol.

## Pricing

- [ISP Branding Plans](https://www.isp.tools/isp-pricing): Put your ISP's brand on every shared and printed test report. Choose ISP.Pro (co-branded) or ISP.Premium (full white-label), confirm your ASN, and you're live — the diagnostic tools stay free either way.

## Help & FAQ

- [FAQ](https://www.isp.tools/help/faq): What ISP.Tools is, how the probe network works, pricing, security and support.
- [About](https://www.isp.tools/help/about): The Brazilian platform for fast, reliable external network testing, measuring your network from the outside since 2014.
- [Install a Probe](https://www.isp.tools/help/join-us): Host a probe and give the community one more vantage point. Three steps, no cost.
- [Supporters](https://www.isp.tools/help/supporters): The organizations that host probes and keep the global measurement network running.
- [Sponsorship](https://www.isp.tools/help/sponsorship): ISP.Tools is free for everyone, supported by ads and generous sponsors.
- [Contact](https://www.isp.tools/help/contact): Contact form for questions and support.

## Optional

- [API](https://api.isp.tools): ISP.Tools API documentation and usage examples.
- [Uptime Monitor](https://www.uptime.blue): 24/7 uptime monitoring and alerts, by uptime.blue.