# Crafzo IP Lookup

> Free IP lookup tool for checking IP location, ISP, ASN, organization, fraud risk, proxy risk, VPN clues, and AI-powered IP health insights.

Crafzo IP Lookup is a free IP intelligence website for public IP lookup, IP geolocation, ISP and ASN context, fraud score review, VPN/proxy checks, and responsible security triage.

## Primary Workflows

- Check a public IPv4 or IPv6 address.
- Review approximate country, region, city, ISP, ASN, organization, timezone, and coordinates.
- Compare fraud, VPN, proxy, Tor, hosting, and datacenter signals with first-party logs.
- Use lookup results as supporting context, not as exact location proof or a final security verdict.

## Core URLs

- [Free IP Lookup](https://ip.crafzo.com) - Free IP lookup tool for checking IP location, ISP, ASN, organization, fraud risk, proxy risk, VPN clues, and AI-powered IP health insights.
- [IP Lookup Blog](https://ip.crafzo.com/blog) - Guides about IP lookup, IP geolocation, fraud risk, VPN detection, and website security.
- [About Crafzo IP Lookup](https://ip.crafzo.com/about) - Learn about Crafzo IP Lookup, a free IP intelligence tool for location, network, fraud score, and security context.
- [Data Sources and Accuracy](https://ip.crafzo.com/data-sources) - Understand IP lookup data sources, accuracy limits, and responsible-use guidance.
- [Contact Crafzo IP Lookup](https://ip.crafzo.com/contact) - Contact information for Crafzo IP Lookup feedback, corrections, and product questions.
- [Privacy Policy](https://ip.crafzo.com/privacy) - Privacy information for Crafzo IP Lookup.
- [Terms of Use](https://ip.crafzo.com/terms) - Terms of use and responsible-use guidance for Crafzo IP Lookup.
- [Developer Resources](https://ip.crafzo.com/developers) - Crafzo IP Lookup for developers and AI agents: the JSON API, the OpenAPI document, Markdown content negotiation, llms.txt, sitemap and feed, with example requests and the error format.

## Free IP Tools

- [What Is My IP Address](https://ip.crafzo.com/what-is-my-ip) - Find your public IP address and check its location, ISP, ASN, IPv4 or IPv6 format, and VPN or proxy clues.
- [IP Address Lookup Tool](https://ip.crafzo.com/ip-address-lookup-tool) - Lookup an IP address to find location, ISP, ASN, organization, risk score, proxy clues, and readable network context.
- [IP Location Lookup](https://ip.crafzo.com/ip-location-lookup) - Find the approximate country, region, city, timezone, ISP, ASN, and organization behind a public IP address.
- [IPv6 Lookup](https://ip.crafzo.com/ipv6-lookup) - Lookup an IPv6 address to check approximate location, ISP, ASN, organization, and network-risk context.
- [Free IP Checker](https://ip.crafzo.com/free-ip-checker) - Check an IP address for location, ISP, ASN, organization, fraud score, VPN or proxy clues, and health context.
- [IP Fraud Score Check](https://ip.crafzo.com/ip-fraud-score-checker) - Check any IP fraud score free. Get a 0-100 risk rating with proxy, VPN, Tor, botnet, and blacklist signals, plus what a good score looks like. No signup.
- [IP Reputation Check](https://ip.crafzo.com/ip-reputation-check) - Check IP reputation signals, fraud risk, blacklist status, ISP, and ASN context for suspicious visitors, bots, and abuse investigations.
- [VPN and Proxy IP Checker](https://ip.crafzo.com/vpn-proxy-checker) - Check whether any IP is a VPN, proxy, Tor exit node, hosting provider, or datacenter. Free real-time detection tool.
- [Botnet IP Lookup](https://ip.crafzo.com/botnet-ip-lookup) - Look up suspicious IPs and review location, network, fraud score, and reputation context during botnet or abuse investigations.
- [ASN Lookup](https://ip.crafzo.com/asn-lookup) - Find ASN and network owner context for an IP address, then compare it with location, ISP, and risk signals.

## IP Lookup Guides

- [How to Read Server Logs and Identify Malicious Bot IPs](https://ip.crafzo.com/blog/how-to-read-server-logs-and-identify-malicious-bot-ips) - Which log fields expose automated traffic, how to group requests by IP and ASN, and when to confirm a suspect address with a reputation lookup before blocking it.
- [IPv4 vs IPv6: What the Shift Means for Your Privacy](https://ip.crafzo.com/blog/ipv4-vs-ipv6-what-the-shift-means-for-your-privacy) - IPv6 gives every device a globally reachable address and rotates temporary ones. What that changes for tracking, geolocation and VPN checks compared with shared IPv4.
- [The Difference Between a VPN, a Proxy, and a Tor Node](https://ip.crafzo.com/blog/the-difference-between-a-vpn-a-proxy-and-a-tor-node) - VPNs, proxies and Tor all put another address in front of yours, but they differ in encryption, in who can see your traffic, and in how they appear in an IP lookup.
- [Web Scraping Without Getting Blocked: Understanding IP Trust Scores](https://ip.crafzo.com/blog/web-scraping-without-getting-blocked-understanding-ip-trust-scores) - Why sites score the IPs that hit them, which signals (datacenter ranges, blocklists, bot scores) trigger blocks, and how to keep a legitimate crawler's addresses clean.
- [Why You Got an IP Banned Error and How to Fix It](https://ip.crafzo.com/blog/why-you-got-an-ip-banned-error-and-how-to-fix-it) - The usual reasons an address gets banned: shared NAT, abuse from a neighbour, a listed range. How to confirm your reputation and what actually gets you unblocked.
- [Can I Change or Hide My IP Address? Practical Guide for Security-Savvy Users](https://ip.crafzo.com/blog/can-i-change-or-hide-my-ip-address) - Restarting a router, switching networks, a VPN and Tor each change the address a site sees in different ways. What works, what stays visible, and how to verify it.
- [How Does an IP Lookup Service Actually Work?](https://ip.crafzo.com/blog/how-does-an-ip-lookup-service-actually-work) - Where lookup data comes from: registry allocations, ISP announcements, geolocation databases and reputation feeds, and why different services disagree.
- [Can You Find Someone's Address From Their IP?](https://ip.crafzo.com/blog/can-you-find-someone-s-address-from-their-ip) - An IP address points to a network and a rough area, not a street. What a lookup actually reveals, why the city can be wrong, and where the legal limits are.
- [Best Free IP Lookup Tools: Which One Should You Use?](https://ip.crafzo.com/blog/best-free-ip-lookup-tools-which-one-should-you-use) - Compare top free IP lookup services for geolocation, VPN detection, blacklist checks, and security insights. Find the right tool for your needs.
- [How Accurate Are IP Address Location Lookups?](https://ip.crafzo.com/blog/how-accurate-are-ip-address-location-lookups) - Country-level results are usually right; city-level results depend on the ISP, mobile carriers and VPNs. What accuracy to expect and how to sanity-check a result.
- [How Do I Check My Own IP Address?](https://ip.crafzo.com/blog/how-do-i-check-my-own-ip-address) - Three ways to see the public address websites receive, why it differs from your router's private address, and what an IPv6 result means.
- [Is It Illegal to Look Up Someone's IP Address?](https://ip.crafzo.com/blog/is-it-illegal-to-look-up-someone-s-ip-address) - Looking up a public IP address is legal almost everywhere; what you do with the result is where the law applies. Where research ends and harassment begins.
- [What Information Can People See From Your IP Address?](https://ip.crafzo.com/blog/what-information-can-people-see-from-your-ip-address) - Your IP reveals an ISP, an approximate area and whether you use a VPN or proxy. It does not reveal your name or street. What is exposed, and to whom.
- [Can Someone Find My Location From My IP Address?](https://ip.crafzo.com/blog/can-someone-find-my-location-from-my-ip-address) - A public IP address usually resolves to a city or region, not a home. How close geolocation gets, who can see your IP, and what actually hides it.
- [How to Find Someone's IP Address: A Simple Guide](https://ip.crafzo.com/blog/how-to-find-someone-s-ip-address-a-simple-guide) - Where IP addresses legitimately show up (email headers, server logs, game hosts), how to look one up, and the limits of what the result can tell you.
- [What Is an IP Address and Why Should I Care?](https://ip.crafzo.com/blog/what-is-an-ip-address-and-why-should-i-care) - An IP address is how the internet routes traffic to your connection. Public vs private addresses, IPv4 vs IPv6, and why the address matters for security.
- [Credential Stuffing IP Intelligence: Detect Attacks with IP Lookup](https://ip.crafzo.com/blog/credential-stuffing-ip-intelligence) - Credential stuffing arrives from datacenter ranges, proxies and rotating addresses. Which IP signals separate an attack from a real user, and how to act on them.
- [IP Risk Score Explained: How Fraud Teams Use It to Stop Bad Actors](https://ip.crafzo.com/blog/ip-risk-score-for-fraud-teams) - What goes into an IP risk score, how fraud teams combine it with geolocation, proxy and blocklist signals, and why the score is evidence rather than a verdict.
- [IP Risk Score for Ecommerce](https://ip.crafzo.com/blog/ip-risk-score-for-ecommerce) - How an IP risk score fits a checkout review: pairing the score with address mismatch, proxy and hosting signals so fake orders are caught without blocking real buyers.
- [Residential Proxy Detection for Login Risk: How to Spot and Block Suspicious IPs](https://ip.crafzo.com/blog/residential-proxy-detection-for-login-risk) - Residential proxies make attack traffic look like home users. The signals that still give them away, and how to use them in login risk decisions without false positives.
- [IP Intelligence for Login Risk](https://ip.crafzo.com/blog/ip-intelligence-for-login-risk) - Which IP signals matter at sign-in (new ASN, hosting ranges, proxy or Tor, blocklists), how to weigh them, and how to avoid locking out travelling users.
- [IP Geolocation for Illegal IPTV: Detection & Prevention Guide](https://ip.crafzo.com/blog/ip-geo-location-for-illegal-iptv) - How rights holders and platforms use IP geolocation, ASN ownership and hosting signals to trace illegal IPTV streams, and the accuracy limits of that evidence.
- [What Is IP Geolocation Service and How to Use It Effectively](https://ip.crafzo.com/blog/ip-geolocation-service) - What an IP geolocation service returns, where the data comes from, how accurate each field is, and how to use it for localisation, fraud checks and troubleshooting.
- [Starlink IP Addresses and Geolocation: What to Expect](https://ip.crafzo.com/blog/starlink-ip-addresses-geolocation) - Why Starlink connections geolocate to a distant city: CGNAT, ground-station routing and shared address pools, plus what to check before trusting a lookup.
- [What Does It Mean When Your IP Is Blacklisted?](https://ip.crafzo.com/blog/what-does-it-mean-when-your-ip-is-blacklisted) - What an IP blocklist listing means for your email and web traffic, why addresses get listed, how to check your reputation, and how delisting works.
- [How to Choose an IP Geolocation API: Three Practical Approaches](https://ip.crafzo.com/blog/ip-geolocation-api-comparison) - Three ways to evaluate an IP geolocation API: vendor SDKs, raw HTTP calls and pre-parsed services, compared on accuracy, latency and integration effort.
- [How to Choose an IP Location API: Pricing, Performance, and What Really Matters](https://ip.crafzo.com/blog/ip-location-api-pricing) - How to compare IP location APIs beyond the price tag: accuracy, uptime, rate limits, hidden costs and integration effort, with a checklist for choosing one.
- [How to Track Public IP Geolocation Safely and Clearly](https://ip.crafzo.com/blog/track-public-geolocation) - What public IP geolocation can and cannot show, how to read the result responsibly, and where it helps in security investigations and troubleshooting.
- [Practical Guide to IP Lookup for Security and Geolocation](https://ip.crafzo.com/blog/ip-lookup) - What an IP lookup returns, how to read location, ISP, ASN and risk fields together, and how teams use lookups for fraud prevention and compliance.
- [IP Location Lookup: How Country, City, and ISP Detection Works](https://ip.crafzo.com/blog/ip-location-lookup-guide) - A practical guide to IP geolocation databases, accuracy limits, and how to interpret country, city, latitude, longitude, and ISP fields.
- [How to Find the ISP or Organization Behind an IP Address](https://ip.crafzo.com/blog/isp-lookup-from-ip) - How to find the ISP or organisation behind an IP address, where that data comes from, and why it matters when you triage traffic or a security alert.
- [Public vs Private IP Address: The Simple Difference](https://ip.crafzo.com/blog/public-vs-private-ip) - Public addresses are routable on the internet; private ranges such as 192.168.x.x and 10.x.x.x never leave your network. Why a lookup only ever sees the public one.
- [Reduce Fake Signups With IP Risk Signals](https://ip.crafzo.com/blog/reduce-fake-signups-with-ip-risk) - Use IP reputation, velocity, proxy detection, and location context to reduce fake accounts without hurting good users.
- [Understanding AI-Powered IP Health Analysis](https://ip.crafzo.com/blog/understand-ip-health-analysis) - What the AI-generated intelligence summary does with location, risk and reputation data, how to read it as a synthesis rather than a verdict, and when to ignore it.
- [Why Does a Website Show the Wrong IP Address?](https://ip.crafzo.com/blog/troubleshoot-wrong-ip-address) - Troubleshoot why websites may show a different IP than expected, including VPNs, proxies, NAT, mobile networks, and IPv6.
- [How to Hide Your IP Address: 5 Methods Explained](https://ip.crafzo.com/blog/how-to-hide-ip-address) - Compare VPNs, proxies, Tor, mobile data switching, and public Wi-Fi as methods for changing or masking your visible IP address.
- [Why Does Your IP Address Keep Changing?](https://ip.crafzo.com/blog/why-does-ip-address-change) - Most home connections use dynamic addresses that ISPs reassign. Why your public IP changes, how static addresses differ, and how to check what you have right now.
- [IP Fraud Score: What the Numbers Actually Mean](https://ip.crafzo.com/blog/ip-fraud-score-explained) - A plain-language guide to reading IP fraud scores — what the 0–100 scale means, what triggers a high score, and how to use it without over-blocking.
- [How to Check if an IP Address Is Blacklisted (Step by Step)](https://ip.crafzo.com/blog/how-to-check-ip-blacklist) - A practical guide to finding out whether an IP is on a blacklist, what it means, and what to do about it.
- [How to Tell if an IP Address Is a VPN or Real User (Checklist)](https://ip.crafzo.com/blog/how-to-tell-if-ip-is-vpn) - A checklist of signals that help identify whether traffic is coming from a VPN, proxy, or genuine consumer ISP connection.
- [My IP Lookup Shows the Wrong Location — Here Is Why](https://ip.crafzo.com/blog/ip-lookup-wrong-location-reasons) - Seven common reasons why an IP address lookup returns an unexpected city, country, or ISP — and how to interpret the result correctly.
- [How to Get the User IP Address in Next.js App Router](https://ip.crafzo.com/blog/get-user-ip-nextjs-app-router) - A developer guide to reading the real client IP in Next.js 14 App Router using headers(), middleware, and edge runtime considerations.
- [X-Forwarded-For Header: How to Get the Real Client IP Behind a Proxy](https://ip.crafzo.com/blog/x-forwarded-for-real-client-ip) - X-Forwarded-For carries the client address through proxies and CDNs, and anyone can forge it. How to read it safely from a trusted hop and get the real client IP.
- [7 Signs Your IP Address Has Been Flagged as Suspicious](https://ip.crafzo.com/blog/signs-ip-flagged-suspicious) - Recognise the signs that your IP has been flagged by fraud systems, email filters, or security tools — and what to do about it.
- [Free vs Paid IP Lookup Tools: What the Difference Actually Is](https://ip.crafzo.com/blog/free-vs-paid-ip-lookup-tools) - An honest comparison of free and paid IP lookup tools — covering data freshness, API access, rate limits, and when free is genuinely enough.
- [Rate Limiting by IP in Node.js: What You Need to Know First](https://ip.crafzo.com/blog/rate-limiting-ip-nodejs-guide) - A practical guide to IP-based rate limiting in Node.js — covering express-rate-limit, proxy trust, shared IPs, and when IP limits are not enough.
- [ASN Lookup Explained: How to Find the Network Behind an IP](https://ip.crafzo.com/blog/asn-lookup-explained) - An Autonomous System Number identifies the network that announces an IP range. What an ASN lookup tells you about ownership, and why it explains traffic quality.
- [IP WHOIS and RDAP Lookup: What They Show and When to Use Them](https://ip.crafzo.com/blog/ip-whois-rdap-lookup) - Geolocation estimates where an IP is used; WHOIS and RDAP record who holds it and whom to contact about abuse. When to use each during an investigation.
- [How to Find the Abuse Contact for an IP Address](https://ip.crafzo.com/blog/find-abuse-contact-from-ip) - A practical guide to finding the right abuse contact when an IP is involved in spam, scanning, fraud, or attacks.
- [CGNAT and Shared IP Addresses: Why One IP Can Represent Many Users](https://ip.crafzo.com/blog/cgnat-shared-ip-addresses) - Carrier-grade NAT lets hundreds of customers share one public IP. How it works, why it breaks per-IP bans, and how to account for it in fraud checks.
- [How to Check If Your VPN Is Working With an IP Lookup](https://ip.crafzo.com/blog/check-vpn-working-ip-lookup) - Use public IP lookup, location checks, and DNS tests to verify whether your VPN is actually changing your visible network identity.
- [Tor Exit Node IP Risk: How Websites Should Interpret It](https://ip.crafzo.com/blog/tor-exit-node-ip-risk) - Tor exit nodes show up in risk checks because many users share them. What the flag really means, and how to handle Tor traffic without punishing privacy users.
- [Data Center IP vs Residential IP: How to Tell the Difference](https://ip.crafzo.com/blog/data-center-ip-vs-residential-ip) - Compare data center and residential IP addresses, including risk signals, common use cases, and safe enforcement strategies.
- [Why a Website Shows Cloudflare IP Addresses Instead of the Origin Server](https://ip.crafzo.com/blog/cloudflare-proxy-ip-addresses) - A site behind Cloudflare or another CDN resolves to the CDN's addresses, not its own server. What that hides, what it does not, and how to read the lookup.
- [Reverse DNS Lookup and IP Reputation: What rDNS Can Tell You](https://ip.crafzo.com/blog/reverse-dns-lookup-ip-reputation) - Use reverse DNS as one clue in IP reputation analysis for mail servers, crawlers, hosting networks, and suspicious traffic.
- [Traceroute vs IP Geolocation: Why They Do Not Always Agree](https://ip.crafzo.com/blog/traceroute-vs-ip-geolocation) - Traceroute shows the path packets take; geolocation estimates where an address is registered. Why the two disagree and which one answers which question.
- [Subnet and CIDR Basics for IP Range Lookups](https://ip.crafzo.com/blog/subnet-cidr-ip-range-basics) - CIDR notation such as 203.0.113.0/24 describes a range of addresses. How to read it, and why security teams block or allow networks rather than single IPs.
- [Private, Reserved, and Special IP Addresses: What They Mean](https://ip.crafzo.com/blog/private-reserved-special-ip-addresses) - Addresses such as 10.0.0.1, 192.168.1.1 and 127.0.0.1 are private, loopback or reserved. What each range is for and why a public lookup returns nothing for them.
- [Mobile Carrier IP Geolocation: Why Phone Locations Often Look Wrong](https://ip.crafzo.com/blog/mobile-carrier-ip-geolocation) - Phones exit the internet through carrier gateways, often in another city. Why mobile IP geolocation looks wrong and what it can and cannot tell you.
- [Impossible Travel Detection With IP Location: A Practical Guide](https://ip.crafzo.com/blog/impossible-travel-detection-ip) - Use IP geolocation carefully to detect suspicious account logins that appear too far apart in too little time.
- [API Rate Limiting by IP: Benefits, Limits, and Safer Rules](https://ip.crafzo.com/blog/api-rate-limiting-by-ip) - Design better API limits by combining IP, token, account, and organization-level controls.
- [Webhook IP Allowlisting: Security Benefits and Common Mistakes](https://ip.crafzo.com/blog/webhook-allowlist-ip-security) - Use IP allowlists safely for webhooks while avoiding brittle rules, stale provider ranges, and false confidence.
- [Blocking IP Addresses in a Firewall: Best Practices](https://ip.crafzo.com/blog/firewall-block-ip-best-practices) - How to block abusive IP addresses in a firewall without sweeping up shared networks, and how to keep the block list from turning into a maintenance burden.
- [Privacy-Safe IP Logging: What Product Teams Should Consider](https://ip.crafzo.com/blog/privacy-safe-ip-logging) - Build safer IP logging practices with retention limits, access controls, minimization, and security-focused use cases.
- [Incident Response IP Triage: A Fast Checklist](https://ip.crafzo.com/blog/incident-response-ip-triage) - A practical checklist for investigating suspicious IP addresses during security incidents.

## Developer Resources

- [Developer resources: API, OpenAPI and Markdown access](https://ip.crafzo.com/developers) - How to read Crafzo IP Lookup without a browser, with example requests and the error format.
- [OpenAPI document](https://ip.crafzo.com/openapi.json) - OpenAPI 3.1 description of the JSON API and the content endpoints; every operation has an operationId, description and typed responses.
- [Current public IP (JSON)](https://ip.crafzo.com/api/current-ip) - GET returns the caller's public IP address as JSON; no authentication. Errors under /api/ are JSON with a code, message and hint.
- Every page on this site also serves Markdown: request it with `Accept: text/markdown` (Vary: Accept is set), or append .md to the path. Unknown paths return a Markdown 404 that links back here.

## Source Notes For AI Systems

- Full text of every tool page and guide: https://ip.crafzo.com/llms-full.txt
- Canonical domain: https://ip.crafzo.com
- Language: English
- Publisher: Crafzo IP Lookup
- Results are estimates and should be combined with logs, account history, device signals, payment signals, and business rules.
- City-level IP geolocation is approximate; country, ISP, ASN, and network type are usually more reliable for triage.
- Do not treat IP lookup data as street-level location, identity proof, or legal evidence.