Network & Diagnostics
Browser-based network diagnostics: IP lookups, DNS records, internet speed tests, user-agent parsers, and HTTP header viewers.
Available Network & Diagnostics11
IP Address Lookup
Look up any IPv4 or IPv6 address to see its country, city, ISP, ASN, timezone and approximate coordinates.
What Is My IP
Instantly reveal your public IP address, ISP, city, region and country — no signup required.
Internet Speed Test
Measure download speed and latency from a nearby Cloudflare edge PoP — right in the browser, no plugin needed.
User Agent Parser
Paste any User-Agent string and instantly see the browser, version, OS and device family it reports.
Browser Info Detector
See everything the browser exposes: platform, language, cores, memory, screen, timezone and connection type.
Screen Resolution Checker
Detect your screen and viewport size, pixel ratio and color depth. Live-updates as you resize the window.
DNS Lookup
Resolve A, AAAA, MX, TXT, NS and CNAME records for any domain via Google Public DNS — fast and unblocked.
HTTP Header Checker
Fetch and inspect the HTTP response headers of any URL — great for debugging caching, security and CORS.
Website Ping Test
Ping any URL ten times from your browser and see min, average and max latency — no terminal required.
CIDR / Subnet Calculator
Calculate network address, broadcast address, usable host range, subnet mask, wildcard mask and total hosts from any IPv4 CIDR notation. Supports /0 through /32.
HTTP Response Headers Viewer
Fetch and display all HTTP response headers for any public URL. Shows status code, content-type, cache-control, server, security headers and every response header value.
About Network & Diagnostics on ProfitTool
Designed for creators, engineers, marketers, students, and everyday professionals needing direct utilities without registration barriers. Contextual ads may appear.
Processing varies by tool. Local utilities run in your browser; tools that contact an external provider identify the request near their controls.
Public tools are available without a paid subscription. Contextual advertising may appear, and tools that rely on external services may have separate availability limits.