Network Tools
Network diagnostics, IP lookups, DNS inspection, domain availability checking, WHOIS queries, website health audits, responsive device previewing, and email security testing.
Domain Availability Checker & Brand Search
Check domain availability across 18+ TLDs (.com, .io, .ai, .dev). Discover smart available brand alternatives and bulk check up to 20 domains with authoritative ICANN RDAP.
Website Health Checkup & Responsive Previewer
Audit any website for SEO health, mobile readiness, security headers, and TTFB latency. Preview responsive layouts live on mobile, tablet, and desktop screens.
IP Lookup & Geolocation
Find your public IP address (IPv4/IPv6), ISP, and geolocation details. Visualizes location on an interactive satellite hybrid map and reports local browser diagnostics.
DNS Lookup & Global Propagation Checker
Query public DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR, DS) and test global propagation live across 8 resolver networks.
Domain WHOIS Lookup
Query domain WHOIS registry records directly from authoritative root servers. Check registration dates, registrar details, nameservers, and domain status instantly.
User-Agent Parser & Browser Inspector
Inspect your active browser User-Agent string or parse custom UA headers online. Detect browser, engine, OS, device, GPU, and screen specs.
Temporary Email Generator (Temp Mail)
Generate free disposable temporary email addresses online. Receive verification codes and protect your inbox from spam.
Email Deliverability & Inbound Tester
Analyze Mail Exchange (MX) records, validate SPF and DMARC settings, and verify if any domain is configured to receive and authenticate incoming emails.
Temporary Phone Number (Receive SMS)
Receive SMS verification codes and OTPs online using free public temporary phone numbers to bypass registrations safely.
Ping & Port Checker
Test if specific TCP ports are open or closed, run ping response diagnostics, and measure host connection latency.
SSL Certificate Checker & Expiry Inspector
Check SSL/TLS certificate details, validation status, key algorithms, and chain details directly from secure host handshakes.
About Network Tools
Diagnose connectivity issues, inspect domain registries, check domain name availability across 18+ extensions with smart brand suggestions, audit website health and SEO performance, preview responsive device viewports live, analyze browser headers, test email deliverability, audit SSL/TLS certificate chains, and protect your online privacy. Query official DNS and WHOIS/RDAP root servers directly from your browser, inspect your public IP address, ISP geolocation, and client browser fingerprint, generate disposable temporary email addresses and virtual SMS numbers for private verifications, audit email authentication security (SPF, DKIM, DMARC), verify port reachability, or query SSL/TLS certificate handshakes directly to verify validity and key strength.
Why Use Our Network Tools?
- Multi-TLD domain availability search across 18+ extensions (.com, .io, .ai, .dev, .co) with ICANN RDAP and DoH
- Smart brand alternatives generator automatically discovering clean available .com variations
- Bulk domain checker verifying up to 20 domains in parallel with instant report tables
- Direct DNS querying across A, AAAA, MX, TXT, NS, CNAME, and SOA record types
- WHOIS and RDAP domain registration lookups querying official root registry endpoints
- Full website health checkup: SEO meta tags, mobile readiness, security headers, and TTFB latency
- Live responsive multi-device previewer across mobile, tablet, laptop, and desktop viewports
- Client IP geolocation, ISP detection, and detailed User-Agent browser parsing
- Disposable temporary email inboxes and SMS phone number receivers with live polling
- Email deliverability security auditing (SPF, DKIM, DMARC) and TCP port connectivity testing
- SSL/TLS certificate checker and expiry inspector querying secure host handshakes directly
How to Get the Most Out of Our Network Tools
Select Your Tool
Browse the tools listed in this directory above to find the exact utility tailored to your file format, calculation, design task, or workflow requirement.
Configure & Process
Input your data, toggle custom parameters, and preview immediate live updates. Computations and transformations process locally on your device with high performance.
Export & Integrate
Copy formatted results, download structured CSV, SVG, PDF, or image files, and integrate outputs directly into your projects without watermarks.
Privacy & Data Security Notice: Tools across DwellixTools operate under a local-first privacy standard. Calculations, image rendering, and document operations process locally in your browser using modern Web APIs. No personal documents, private financial data, passwords, or image assets are stored on our servers.
Frequently Asked Questions About Network Tools
How do network tools (DNS, WHOIS, SSL) work without browser extensions?
Web browsers cannot open raw TCP sockets directly due to security sandboxes. Our network diagnostics query authoritative DNS-over-HTTPS (DoH) endpoints and secure serverless edge probes (Cloudflare Workers) to fetch real-time public registry records.
What should I do if the Email Deliverability tester flags missing SPF or DMARC records?
Log in to your domain registrar or DNS management portal (Cloudflare, GoDaddy, Namecheap) and add the recommended TXT records. Publishing an SPF record (v=spf1 ...) and DMARC record (_dmarc) is strictly required by Google and Yahoo to prevent your outgoing emails from going directly to spam.
Why should I monitor my domain SSL certificate expiration date?
Modern free SSL certificates (such as Let’s Encrypt) are valid for only 90 days. If an automated renewal daemon fails, your website will trigger full-screen browser security warnings (ERR_CERT_DATE_INVALID), blocking visitors and hurting search engine rankings.
Does DwellixTools record or track my domain lookups and IP queries?
No. Queries are initiated directly to public DNS and registry endpoints. DwellixTools does not maintain logs, search histories, or databases of the domain names or IP addresses you inspect.
How frequently are public DNS records updated across global root resolvers?
DNS records propagate according to their Time-To-Live (TTL) setting, typically updating globally within 15 minutes to 2 hours. Our DNS lookup queries authoritative resolvers directly to show current propagation status.