Inspect any IP address
Resolve IPv4/IPv6 to country, region, city, ISP, and timezone via ipapi.co. Defaults to looking up your own IP.
How to look up an IP
Empty input looks up your own IP. Otherwise paste any IPv4 or IPv6 address.
- 01
Paste an IP
Or leave the field empty to inspect your own IP.
Lookups reference the IANA registries (MIME, HTTP status, TLDs) bundled at build time — no live network calls, no rate limits, no leaked queries.
inputIANAregistryofflineliveinput · queryip · IANA1.1.1.1
loaded · IANA bundlespec · ready - 02
Read geo info
Country, region, city, postal code, and timezone where ipapi.co maps the IP.
Builders emit canonical syntax per the relevant RFC (9110 for HTTP, 5322 for headers, 3986 for URLs) so the output passes spec-compliant parsers.
geoRFC 9110canonicalspec-compliantlivegeo · optionsloc · liveAU · Brisbane
options applied · livecanonical - 03
Inspect org / ISP
The Org field shows the network operator (often the ASN owner).
Validation flags common pitfalls — uppercase header names, smart quotes inside
Content-Type, missing;charset=utf-8— before they bite production.asnvalidationlintpitfallsliveorg · looked upisp · readyCloudflare, Inc.
result · livevalidated - 04
Copy or download
Grab the key/value summary in plain text.
Copy writes the snippet directly into your clipboard; downloads emit the right extension and MIME so curl/httpie pick them up correctly.
exportclipboardMIME-correctblobcurl-readyok · copiedready · doneCopied
shipped · ready to shipsuccess
Web-spec details that bite later
Idempotency saves retries
POST/PUT/DELETE should be safely retried. Use idempotency keys and return the same response on duplicate requests.
Match RFC 9110 status codes
Don’t invent codes. 422 for validation errors, 409 for conflicts, 429 for rate limits. Standard codes work with off-the-shelf clients.
Set <code>Cache-Control</code> deliberately
Default browser caching is conservative. Use max-age + stale-while-revalidate for hot endpoints.
Validate Open Graph in dev
OG tags break silently. Use a previewer like OG Generator + Facebook’s debugger before launch.
CORS is a server concern
The browser sends the preflight; the server decides. Wildcard origins disable credentials — be explicit.
MIME drives behaviour
Servers must send the right Content-Type. Browsers sniff but the spec says they shouldn’t — be explicit to avoid surprises.
When to look up an IP
Abuse mitigation, geo-routing, support tickets.
Abuse review
Identify the ASN behind a noisy IP in your logs. Bundled from IANA registries at build time — no live network call, no rate limit, no leaked queries. The MIME, TLD, and status-code tables are baked in so the tool works offline once loaded.
spec-compliantGeo decisions
Pick a CDN region or compliance handling. Output is canonical per the relevant RFC (9110 for HTTP, 5322 for headers, 3986 for URLs), so spec-compliant parsers accept it as-is. Cross-browser and cross-library behaviour stays consistent.
offlineVPN debugging
Confirm your egress IP after switching servers. Pairs with the curl-to-fetch converter for end-to-end test stubs — copy the curl from DevTools, paste, get an idiomatic fetch() body. Drop into Playwright/Vitest fixtures without manual translation.
IANA-backedSupport tickets
Quickly look up the user's reported IP. Catches common pitfalls (uppercase header names, smart quotes inside Content-Type, missing ;charset=utf-8) before they bite production. Validation flags rather than auto-corrects so you stay in control.
RFC-alignedRate-limit triage
Check if a flood comes from a single network. Validation runs as you type — copy only when the output is shaped correctly. The output drops directly into nginx, Apache, or CDN configs without re-formatting or re-quoting.
production-gradeNetwork footprint
Audit which IPs your service publishes. Same input plus same options always produces identical canonical output, so the tool is safe to embed in CI scripts that diff against expected configs.
curl-readyFrequently asked questions
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