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IP Address Lookup API

The IPSB API allows you to perform IP address lookups for both IPv4 and IPv6 addresses. It provides detailed information such as location, ISP, and other related data for any given IP address.

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AuthHTTPSNo CORSGeocoding

Verified today: 100% uptime

API key

Unconfirmed

HTTPS

Supported

Browser calls

No, needs a proxy

Status

Live · 100/100

Overview & Architectural Role

IP Address Lookup API provides programmatic access to the ipsb api allows you to perform ip address lookups for both ipv4 and ipv6 addresses. it provides detailed information such as location, isp, and other related data for any given ip address. Delivered over secure HTTPS protocols, it exposes structured endpoints designed to integrate cleanly into modern frontend frameworks, backend microservices, and automated data pipelines without requiring local database provisioning.

Who it is built for

Engineers building web dashboards, mobile applications, CLI utilities, or background cron workers in need of reliable geocoding data feeds.

Architectural Advantage

Consuming IP Address Lookup API removes the operational overhead of running custom scrapers, orchestrating headless browser fleets, or manually seeding and maintaining a local database. Instead of reverse-engineering volatile DOM layouts or dealing with anti-bot IP blocks, your application connects directly to a standardized JSON interface designed for backend ingestion with consistent schema schemas. Dedicated authentication ensures rate quotas and credential tracking per project environment.

What our checks found

Health score
100/100
Reliability
100%
Average latency
1670ms

Last checked 2026-10-24. Measured independently, not self-reported by the provider.

Core Use Cases & Architecture Ideas

Practical real-world patterns for integrating IP Address Lookup API into software systems.

Autocomplete Address & Location Form

Prevent shipping errors by resolving postal codes and street addresses into standardized coordinates during signup or checkout.

Architecture: Debounced client-side input calls an internal proxy route connected to IP Address Lookup API, returning instant coordinate suggestions.

Store Locator & Proximity Matcher

Calculate the closest physical branches or delivery hubs based on user-provided city names or latitude/longitude.

Architecture: Backend geocodes user input via IP Address Lookup API, then executes spatial PostGIS queries to return the top nearest facilities sorted by distance.

Interactive Travel & Route Visualizer

Plot points of interest, tourist paths, or elevation profiles dynamically on Leaflet/MapLibre map canvases.

Architecture: Single-page web client ingests geospatial GeoJSON boundaries from IP Address Lookup API and renders vectorized overlays onto map layers.

Code Implementation Examples

Production-ready starting templates with error handling for IP Address Lookup API.

// Authentication requirement is unconfirmed. Check the documentation before relying on this.
// Modern native fetch with error handling
async function callApi() {
  try {
    const response = await fetch('https://github.com/api/v1/resource', {
      method: 'GET',
    headers: {
      'Authorization': 'Bearer YOUR_TOKEN',
      Accept: 'application/json',
    },
    });

    if (!response.ok) {
      throw new Error(`HTTP ${response.status}: ${response.statusText}`);
    }

    const data = await response.json();
    console.log('Response payload:', data);
    return data;
  } catch (error) {
    console.error('API request failed:', error);
    throw error;
  }
}

// callApi();

This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.

Response Payload & Live Testing

Inspect the expected JSON structure returned by IP Address Lookup API.

Expected JSON Response Payload

Authentic sample payload structure to evaluate schema attributes before integration.

{
  "query": "San Francisco, CA",
  "results": [
    {
      "formatted_address": "San Francisco, California, USA",
      "lat": 37.7749,
      "lon": -122.4194,
      "timezone": "America/Los_Angeles",
      "postal_code": "94102"
    }
  ],
  "total_matches": 1
}
Format: application/json

Integration Considerations & Best Practices

Technical factors to keep in mind when integrating IP Address Lookup API into production environments.

Implement In-Memory or Edge Caching

Avoid triggering rate limits on public feeds by caching response payloads in Redis, Vercel KV, or standard HTTP Cache-Control headers with a 5-to-15 minute TTL.

Zero-Credential Environment Protection

While no API key is required, public keyless pools often share global rate limits. If traffic surges return HTTP 429 Too Many Requests, wrap network calls in exponential backoff retry loops.

CORS Proxy Required for Browser Frontend Calls

This API does not send Access-Control-Allow-Origin response headers. Direct fetch() calls from browser JavaScript will fail due to Same-Origin Policy. Route your calls through a server backend or lightweight edge proxy.

Validate HTTP Status Before Parsing JSON

Always inspect response.ok before executing response.json(). Upstream services returning 4xx or 502 Bad Gateway often serve HTML error pages, which cause syntax errors when parsed as JSON.

Where this listing comes from

Aggregated from one public source (freepublicapis), then normalised and checked by us.

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IP Address Lookup API — common questions

Answered from what our own scheduled checks found, not from the provider's marketing.

Is IP Address Lookup API free to use?

IP Address Lookup API is listed in our free catalogue, but it requires some form of authentication, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.

Does IP Address Lookup API need an API key?

IP Address Lookup API requires some form of authentication. Check the provider's documentation for which scheme it expects.

Can I call IP Address Lookup API from browser JavaScript?

Not directly. IP Address Lookup API did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.

Is IP Address Lookup API still working?

Yes, as of 2026-10-24. Our automated check reached IP Address Lookup API and recorded a 100% reliability score with a median response time of 1670 ms. We re-check on a schedule, and this page updates with the result.

Is IP Address Lookup API available over HTTPS?

Yes. IP Address Lookup API serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.