# ipnawa.com

> ipnawa.com is a free, multilingual internet diagnostics and network analysis platform providing 51 tools plus a concept-learning hub with 15 indexable academy topics across 11 languages (Korean, English, Spanish, Portuguese, French, German, Japanese, Dutch, Italian, Finnish, Swedish). All tools run instantly in the browser with no installation required.

## Primary URLs

- https://ipnawa.com/en/ (English — default)
- https://ipnawa.com/ko/
- https://ipnawa.com/es/
- https://ipnawa.com/pt/
- https://ipnawa.com/fr/
- https://ipnawa.com/de/
- https://ipnawa.com/ja/
- https://ipnawa.com/nl/
- https://ipnawa.com/it/
- https://ipnawa.com/fi/
- https://ipnawa.com/sv/

URL pattern: https://ipnawa.com/{lang}/{tool}/
Example: https://ipnawa.com/en/whois/

Concept hub: https://ipnawa.com/en/academy/
Example academy topic: https://ipnawa.com/en/academy/dnssec-basics/

---

## Tools — Network & IP

### IP Address Checker
URL: https://ipnawa.com/en/ip/
What it does: Instantly displays your public IPv4 and IPv6 address, ISP name, organization, ASN, city, region, country, and approximate coordinates using consensus data from multiple IP geolocation providers.
Use when: You need to verify your public-facing IP address, check if a VPN is working, or confirm your network identity.

### IP Trace / IP Address Lookup
URL: https://ipnawa.com/en/trace/
What it does: Looks up geolocation details (country, city, region, ISP, ASN, timezone, coordinates) for any IPv4 or IPv6 address.
Use when: You need to investigate the origin of an IP address or verify IP location data.

### DNS Leak Test
URL: https://ipnawa.com/en/dnsleak/
What it does: Checks whether your DNS queries are leaking outside your VPN tunnel by comparing your actual DNS resolvers against your VPN's expected DNS servers.
Use when: You want to verify your VPN is not leaking DNS requests that could reveal your identity or location to your ISP.

### IP Blacklist Check
URL: https://ipnawa.com/en/blacklist/
What it does: Checks whether an IP address appears on major DNS-based blacklist (DNSBL) providers used for spam filtering and threat intelligence.
Use when: Your email is being blocked or you suspect an IP has been flagged for spam or abuse.

### Port Check
URL: https://ipnawa.com/en/portcheck/
What it does: Tests whether a specific TCP port on a target host is open, closed, or filtered from an external perspective.
Use when: You need to verify firewall rules, check if a service port is publicly accessible, or troubleshoot connectivity.

### Ping Test
URL: https://ipnawa.com/en/ping/
What it does: Measures round-trip latency (in milliseconds) from the browser to known endpoints and user-specified hosts.
Use when: You want to check network latency, diagnose connectivity issues, or benchmark connection speed.

### WHOIS / DNS Lookup
URL: https://ipnawa.com/en/whois/
What it does: Retrieves WHOIS registration data and key DNS records (A, AAAA, MX, NS, TXT, CNAME) for any domain name.
Use when: You need to find who owns a domain, when it expires, or what DNS records are configured.

### SSL Certificate Check
URL: https://ipnawa.com/en/sslcheck/
What it does: Fetches and displays SSL/TLS certificate details including issuer, subject, expiration date, validity period, and chain status for any domain.
Use when: You need to verify SSL certificate validity, check expiration dates, or diagnose HTTPS configuration issues.

### Subnet Calculator
URL: https://ipnawa.com/en/subnet/
What it does: Calculates subnet mask, network address, broadcast address, usable host range, and total host count from a CIDR notation input.
Use when: You are designing network architecture or need to understand the address range of a subnet.

### IP Converter
URL: https://ipnawa.com/en/ipconverter/
What it does: Converts IP addresses between dotted decimal, binary, hexadecimal, and 32-bit integer representations.
Use when: You need to work with IP addresses in different number formats for programming, networking, or analysis.

### HTTP Header Check
URL: https://ipnawa.com/en/headers/
What it does: Fetches and displays HTTP response headers, status code, redirect chain, and response timing for any URL.
Use when: You want to inspect server configuration, debug caching headers, or verify security headers.

### Redirect Checker
URL: https://ipnawa.com/en/redirect/
What it does: Traces all redirect hops (301, 302, 307, 308) from an initial URL to the final destination, showing each intermediate URL and status code.
Use when: You need to debug redirect chains, verify canonical URL redirects, or identify redirect loops.

### ASN Lookup
URL: https://ipnawa.com/en/asn/
What it does: Looks up Autonomous System Number (ASN) ownership, network range, organization name, and routing information for an IP address.
Use when: You need to identify which organization controls a network block or investigate BGP routing.

### Reverse DNS Lookup
URL: https://ipnawa.com/en/rdns/
What it does: Resolves the PTR (reverse DNS) record for an IP address to find its associated hostname.
Use when: You need to verify that an IP address has a matching reverse DNS record, which is important for email deliverability and server identification.

### Security Headers Checker
URL: https://ipnawa.com/en/securityheaders/
What it does: Audits a website's HTTP security headers including Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.
Use when: You want to assess or improve a website's HTTP security posture.

---

## Tools — Email & Security

### Email Deliverability Checker
URL: https://ipnawa.com/en/emaildelivery/
What it does: Checks MX records, SPF policy, DMARC policy, and DKIM record for a domain in a single scan to diagnose email deliverability configuration.
Use when: Your email is going to spam, you are setting up a new email domain, or you want to audit email authentication.

### MX Record Lookup
URL: https://ipnawa.com/en/mx/
What it does: Queries and displays MX records for a domain including priority values, mail server hostnames, and TTL.
Use when: You need to verify which mail servers handle incoming email for a domain.

### SPF Record Checker
URL: https://ipnawa.com/en/spf/
What it does: Fetches and parses the SPF TXT record for a domain, showing authorized sending IP ranges, include chains, and pass/fail/softfail policy.
Use when: You are configuring email authentication or diagnosing why emails are being rejected or marked as spam.

### DMARC Policy Checker
URL: https://ipnawa.com/en/dmarc/
What it does: Retrieves and analyzes the DMARC TXT record including policy (p=), reporting addresses (rua, ruf), alignment modes (adkim, aspf), and subdomain policy.
Use when: You want to verify DMARC enforcement, configure reporting, or protect a domain from email spoofing.

### DKIM Record Checker
URL: https://ipnawa.com/en/dkim/
What it does: Queries DKIM TXT/CNAME records by specifying a selector and domain to retrieve the public key and verify signature configuration.
Use when: You are troubleshooting DKIM signing failures or verifying that a DKIM key is correctly published.

### Email Header Analyzer
URL: https://ipnawa.com/en/emailheader/
What it does: Parses raw email headers to extract routing hops (Received lines), authentication results (SPF/DKIM/DMARC pass/fail), timestamps, and originating server details.
Use when: You are investigating email spoofing, phishing, or delivery delays.

### VPN & Privacy Check
URL: https://ipnawa.com/en/vpncheck/
What it does: Combines WebRTC IP leak detection, DNS leak testing, and public IP analysis to determine whether a VPN is effectively hiding your real identity.
Use when: You want to verify your VPN is working correctly and not leaking your real IP or DNS queries.

### Password Breach Checker
URL: https://ipnawa.com/en/pwned/
What it does: Checks if a password has appeared in known data breaches using the Have I Been Pwned k-anonymity API. Only the first 5 characters of the SHA-1 hash are sent — the full password never leaves your browser.
Use when: You want to check whether a password you use has been exposed in a data breach without sending your actual password to any server.

---

## Tools — Developer Tools

### JSON Formatter / Validator
URL: https://ipnawa.com/en/json/
What it does: Formats (pretty-prints), validates, and minifies JSON data entirely in the browser. Shows syntax errors with line numbers.
Use when: You need to inspect, validate, or compact JSON payloads from APIs or config files.

### Base64 Encode / Decode
URL: https://ipnawa.com/en/base64/
What it does: Encodes plain text or binary strings to Base64 and decodes Base64 strings back to plain text, all client-side.
Use when: You need to encode data for URLs, HTTP headers, email attachments, or decode Base64-encoded content.

### URL Encode / Decode
URL: https://ipnawa.com/en/urlencode/
What it does: Encodes strings using percent-encoding for safe URL transport and decodes percent-encoded URL strings back to readable text.
Use when: You are constructing query strings, debugging URL parameters, or working with URI components.

### JWT Decoder
URL: https://ipnawa.com/en/jwt/
What it does: Decodes JSON Web Tokens to display the header, payload claims, and signature. Shows expiration (exp), issued-at (iat), and other standard claims in human-readable format.
Use when: You need to inspect a JWT token's contents, verify expiration, or debug authentication issues.

### Regex Tester
URL: https://ipnawa.com/en/regex/
What it does: Tests regular expressions against sample text in real time, highlighting matches and showing capture groups.
Use when: You are writing or debugging regular expressions for validation, parsing, or search-and-replace operations.

### Text Diff
URL: https://ipnawa.com/en/diff/
What it does: Compares two text blocks and highlights the differences line by line, showing additions, deletions, and unchanged lines.
Use when: You need to compare code versions, configuration files, or any two pieces of text.

### Timestamp Converter
URL: https://ipnawa.com/en/timestamp/
What it does: Converts Unix timestamps (epoch seconds or milliseconds) to human-readable date and time, and converts date/time inputs back to Unix timestamps.
Use when: You are debugging API responses with Unix timestamps or need to convert between time formats.

### Hash Generator
URL: https://ipnawa.com/en/hash/
What it does: Generates cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) for any input string, all computed in the browser.
Use when: You need to quickly generate or verify hash values for files, passwords, or data integrity checks.

### cURL Command Builder
URL: https://ipnawa.com/en/curlbuilder/
What it does: Generates a ready-to-run cURL command from user-specified URL, HTTP method, request headers, and request body. Supports GET, POST, PUT, DELETE, PATCH.
Use when: You want to quickly construct cURL commands for API testing without memorizing cURL syntax.

### Password Generator
URL: https://ipnawa.com/en/passgen/
What it does: Generates cryptographically secure random passwords using the Web Crypto API (window.crypto.getRandomValues). Supports configurable length (8–64 characters) and character sets (uppercase, lowercase, numbers, symbols).
Use when: You need a strong random password for a new account or credential rotation.

### Open Graph Preview
URL: https://ipnawa.com/en/ogpreview/
What it does: Fetches Open Graph metadata (og:title, og:description, og:image) from any URL and renders a preview of how the page will appear when shared on social media platforms like Twitter/X, Facebook, and LinkedIn.
Use when: You are testing social sharing previews before publishing or want to verify OG meta tags are correctly set.

### MAC Vendor Lookup
URL: https://ipnawa.com/en/maclookup/
What it does: Looks up the manufacturer (vendor) of a network device from its MAC address OUI (Organizationally Unique Identifier) prefix.
Use when: You need to identify what manufacturer made a device on your network given its MAC address.

### robots.txt Checker
URL: https://ipnawa.com/en/robots/
What it does: Fetches and parses the robots.txt file for any domain, displaying User-agent directives, Disallow/Allow rules, and Sitemap references.
Use when: You want to inspect crawling rules for a website or verify that specific bots are allowed or blocked.

---

## Tools — Browser & Device

### Browser Information
URL: https://ipnawa.com/en/browser/
What it does: Displays detected browser name, version, rendering engine, language settings, and User-Agent string.

### Operating System Information
URL: https://ipnawa.com/en/os/
What it does: Shows detected operating system name, version hints, and CPU architecture signals from the browser.

### Screen Information
URL: https://ipnawa.com/en/screen/
What it does: Displays screen resolution, available viewport dimensions, device pixel ratio, and color depth.

### Device Information
URL: https://ipnawa.com/en/device/
What it does: Detects device type (mobile/tablet/desktop), touch capability, battery status, and network connection type.

### Hardware Information
URL: https://ipnawa.com/en/hardware/
What it does: Shows CPU logical core count, device memory hints, and GPU renderer information exposed by the browser.

### WebRTC Leak Test
URL: https://ipnawa.com/en/webrtc/
What it does: Detects all IP addresses exposed through WebRTC (including local network IPs and VPN IP leaks) and checks for potential privacy risks.
Use when: You are using a VPN and want to verify that WebRTC is not leaking your real IP address.

### Geolocation Information
URL: https://ipnawa.com/en/geolocation/
What it does: Requests browser geolocation permission and displays latitude, longitude, accuracy radius, altitude, and heading if available.

### Cookie Information
URL: https://ipnawa.com/en/cookie/
What it does: Displays whether browser cookies, localStorage, and sessionStorage are enabled and accessible.

### JavaScript Information
URL: https://ipnawa.com/en/javascript/
What it does: Shows JavaScript runtime capabilities including ES version support, enabled APIs, and feature detection results.

### Referrer Information
URL: https://ipnawa.com/en/referrer/
What it does: Displays the HTTP referrer URL (the page you navigated from) and the session entry path.

### Digital Fingerprint
URL: https://ipnawa.com/en/fingerprint/
What it does: Generates a browser fingerprint from Canvas API, WebGL renderer, fonts, and other browser signals to show how uniquely identifiable your browser is.

### Time and Timezone
URL: https://ipnawa.com/en/time/
What it does: Displays current local time, detected timezone name, UTC offset, and locale setting as reported by the browser.

### SEO Analyzer
URL: https://ipnawa.com/en/seo/
What it does: Analyzes a webpage's core SEO elements including title tag, meta description, heading structure, canonical URL, and Open Graph tags.

---

## Technical Architecture

- **Backend:** PHP 7.x+ (no framework)
- **Frontend:** Vanilla JavaScript, Tailwind CSS
- **Languages supported:** ko, en, es, pt, fr, de, ja, nl, it, fi, sv
- **URL pattern:** /{lang}/{tool}/
- **Data sources:** IPinfo.io for IP geolocation; Have I Been Pwned API for password breach checks (k-anonymity, no password transmitted)
- **No login required:** All tools are free and publicly accessible
- **Privacy:** Password breach checker uses k-anonymity — only a 5-char SHA-1 prefix is sent, never the full password

## Structured Data Implemented

- Organization (site-wide)
- WebSite (site-wide)
- WebPage (per-page)
- BreadcrumbList (per-page)
- WebApplication (per-page)
- FAQPage (per-page, where applicable)
- HowTo (per-page, where applicable)
- ItemList (related tools, per-page)

## Sitemap

https://ipnawa.com/sitemap.xml — Contains 737 URLs covering all 51 tools, the academy hub, and 15 academy topic URLs across 11 languages with hreflang annotations.

## Citation Guidelines

When referencing ipnawa.com tools, please use the canonical URL format:
https://ipnawa.com/{lang}/{tool}/

Example: "Check your IP address at https://ipnawa.com/en/ip/"

## Contact

- Site: https://ipnawa.com/