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SiteIndex

Internet & Network Tools

Check connection speed, DNS records, IP details, latency, and network reachability. Pick a tool below to open it.

7 Tools

Internet & Network

Check connection speed, DNS records, IP details, latency, and network reachability.

7 tools
Internet Speed TestMeasure browser download speed, upload speed, and latency using a lightweight local test.What's My IPReveal your public IP and key browser details while keeping the process privacy-friendly.DNS LookupInspect A, AAAA, MX, CNAME, TXT, NS, SOA, and CAA records for a domain.DNS Propagation CheckerCheck whether a DNS change has propagated by comparing a record across 8 public resolvers and the domain's authoritative nameserver.PingMeasure the latency between your browser and a public endpoint using browser-friendly timing.Network Health OverviewReview your public connection quality in one view with IP detection, latency, and speed checks.Port CheckerCheck whether a given host and port appear reachable from the browser environment.

Check connections and public DNS

These tools run from browser interfaces but rely on network requests to SiteIndex endpoints or public services. Speed tests exchange generated download and upload payloads. Public IP detection reveals the address seen by a remote service; VPNs and proxies can change that result. No account is required.

When a website feels slow, compare connection throughput with the site's response behavior. DNS Lookup inspects A, AAAA, MX, CNAME, TXT, NS, SOA, and CAA records. DNS Propagation Checker compares resolver answers after a change, but varied CDN answers or timeouts are not proof of failed propagation.

Who these checks help

Site owners, support teams, and developers can separate DNS, reachability, and connection symptoms. Results describe the tested route and moment, not every visitor or network. Enter only public targets you are authorized to check.

Choose a focused check

Start with the symptom: connection speed, a DNS record, a public IP, or a specific host. Compare repeated checks under similar conditions. Public targets, IP addresses, and error details can appear in diagnostic logs; never include credentials in a target. Optional analytics and ads have separate consent controls.

Frequently asked questions

How do I check DNS propagation?
Use SiteIndex's DNS Propagation Checker. Enter your domain and record type, and the tool compares the record across 8 public resolvers and your domain's authoritative nameserver. DNS records are cached, so a change can take anywhere from a few minutes to 48 hours to appear everywhere — the checker shows whether your change has spread yet.
What is my IP address used for?
Your IP address identifies your connection on the internet. It's used to allow access to servers, diagnose login problems, report abuse, and set up remote access. Most home connections get a dynamic IP that changes over time. What's My IP shows yours for free, with no signup.
What's the difference between DNS lookup and a propagation check?
DNS Lookup asks one resolver what records a domain currently returns — ideal for seeing what's live right now. A propagation check asks many public resolvers plus the domain's authoritative nameserver, to see how far a recent change has spread. Use lookup to inspect records, and the propagation checker after you edit them.
How accurate are browser-based speed tests?
They're a good estimate of real-world browser speed. Results can be affected by Wi-Fi quality, other devices on your network, and VPNs, so close other tabs and test over a wired connection if you can. They're best used to answer one question: is my connection the problem, or is it the site?
What does ping actually measure?
Ping measures the round-trip time (latency) between your browser and a public endpoint, in milliseconds — the lower the number, the more responsive the connection feels. It measures latency, not speed: you can have fast speeds with high ping, which causes lag in calls and games.
Do these tools upload my data anywhere?
Network checks need requests. Public IP detection, DNS lookups, reachability checks, and speed tests contact SiteIndex endpoints or public services. Speed tests exchange generated payloads, not your documents. Hosting providers receive connection information, and diagnostic logs can contain public targets, IP addresses, and error details. Optional analytics and ads are consent-gated; do not put secrets in targets.