# ipapi.is, free, POST /: IP company lookup API

> ipapi.is provides information about the organization that owns the queried IP address. Millions of WHOIS records are crawled to source the data.

ipapi.is's Free plan for the IP company lookup API costs $0.00 per 1,000 IP addresses. ipapi.is's docs list 8 of the 10 fields on our checklist: Owner's name, Owner's domain, ASN, Network range, Country, Region and city, VPN and proxy, Hosting.
In [our IP company lookup API benchmark](https://datacircle.dev/best-ip-company-lookup-api.txt), the best plan from ipapi.is scores 74.1 out of 100. ipapi.is ranks 5th of 15 providers.
This plan is free. We rank 398 plans for IP company lookup APIs by price. Half the plans cost $0.112 per 1,000 IP addresses or less. [See the best free IP company lookup API plan.](https://datacircle.dev/best-ip-company-lookup-api.txt)
[IPHunter's €99.99 monthly plan](https://datacircle.dev/ip-company-lookup-apis/iphunter/99-99-monthly/llms.txt) is the cheapest paid plan per 1,000 IP addresses. IPHunter's €99.99 monthly plan covers up to 11,520,000 IP addresses a day.
[FreeIPAPI's €9.90 monthly plan (/api/bulk/json)](https://datacircle.dev/ip-company-lookup-apis/freeipapi/9-90-monthly-unlimited-post-api-bulk-json/llms.txt) covers any number of IP addresses. FreeIPAPI's €9.90 monthly plan costs less up front than IPHunter's €99.99 monthly plan.
[DNSlytics](https://datacircle.dev/ip-company-lookup-apis/dnslytics/free/llms.txt), [ipwhois.io](https://datacircle.dev/ip-company-lookup-apis/ipwhois-io/free/llms.txt) and [IPBot](https://datacircle.dev/ip-company-lookup-apis/ipbot/free-anonymous-get-v1-ip-ip/llms.txt) are the best IP company lookup API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/ip-company-lookup-apis/ipapi-is/free-post
- [IP company lookup API: the 15 best providers compared](https://datacircle.dev/best-ip-company-lookup-api.txt)
- Get it: https://ipapi.is/pricing.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Request: `POST https://api.ipapi.is/`
- API key: with the plan, on https://ipapi.is/pricing.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Its API docs: https://ipapi.is/developers.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing#post-endpoint
- Sold by: ipapi.is (https://ipapi.is?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 80%
- Owner's name: ✓
- Owner's domain: ✓
- ASN: ✓
- Network range: ✓
- Country: ✓
- Region and city: ✓
- VPN and proxy: ✓
- Hosting: ✓

## Price

- $ per 1,000 IP addresses: $0.00
- Per: result
- Billing: free

## Charges

- Also pays for: from the same budget: IP lookup · ASN query

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: ipapi.is provides information about the organization that owns the queried IP address. Millions of WHOIS records are crawled to source the data.

## Data

- Keep data: "You may retain ipapi.is data only for the term of the contract under which you obtained it, and solely for the permitted purposes above." [...] "Caching API query results for up to 30 days solely for resiliency or performance reasons, after which the data must be refreshed or deleted." [...] "Results that have become part of your own records of individual events, such as a log entry, a transaction or a fraud decision, may be kept for as long as you need those records, but must not be used as a source for further lookups."
- Use data: "solely for the internal purposes of the Customer, the single person or legal entity that concluded the contract" [...] "You may use and process the data only to support internal decision-making, analytics, fraud prevention, security, personalization, and operational workflows directly tied to your products or services" [...] "You are strictly prohibited from the following uses of ipapi.is data and databases: Reselling or Redistribution: You may not resell, sublicense, lease, rent, transfer, or distribute ipapi.is data to third parties in any medium, including by exposing identical or trivially modified copies (such as reformatting columns, renaming fields, or adding superficial metadata). Sharing more than a negligible portion of the database—defined as more than 1% or 10,000 records, whichever is smaller—in any rolling 30-day period is strictly prohibited. Intermediary or White-Label Use: You may not use the data to operate an IP intelligence, threat-intelligence, geolocation, or similar service that competes with ipapi.is, nor may you make the data available through an API, downloadable feed, or subscription product for the benefit of third parties. Public Sharing: You may not publish or disclose ipapi.is data in a manner that allows the general public or third parties to enumerate, export, scrape, or otherwise access more than a negligible portion of the dataset. [...] Data Manipulation: Modifying the data in a trivial manner to disguise its origin or to facilitate redistribution, resale, or matching against other databases for the benefit of third parties is prohibited. External Access: You may not grant any third party (including affiliates, contractors, or service providers) persistent access to ipapi.is data unless they are bound by written agreements that (a) limit use to your direct benefit, (b) prohibit retention after services end, and (c) comply with these Terms. You remain responsible for any use by such parties. Cloning, Reverse Engineering, or Derivative Products: Creating derivative databases, machine-learning models, or services that permit extraction or reconstruction of the original data, or training models for the purpose of competing with or replicating ipapi.is products, is prohibited. Improving Other IP Data: You may not use ipapi.is data, in whole or in part, directly or indirectly, to create, compile, correct, update, verify, validate, benchmark, enrich, seed or train any dataset, database, model, API or service that is made available to third parties and provides IP address information of any kind [...] Unauthorized Use: Using the data in violation of applicable law, regulatory requirements, sanctions regimes, or the rights of any third party is not allowed. Circumventing rate limits, security controls, or payment requirements is also prohibited."

## Plan

- Pay: $0
- You get: 1,000 requests a day
- Enough for: 1,000 results a day

## Rate limit

- Per day: 1,000
- Batch: 100

## Speed

- Answer: in the call

## The call

- You send: Content-Type header "application/json", ips
- Method: POST
- Path: /

## About the plan

- Plan: Free
- Who can get it: anyone with an account who is at least 18 years old, one account per person or legal entity

## The 81 fields the plan's answer can hold

IP address, RIR, bogon, mobile network, satellite network, anycast, crawler, datacenter, Tor exit node, proxy, VPN, abuser, VPN service, VPN service URL, VPN type, VPN IP or range, VPN last seen, VPN exit node region, VPN hostname, VPN country code, VPN city, VPN latitude, VPN longitude, VPN claimed country code, VPN claimed city, VPN claimed latitude, VPN claimed longitude, egress service type, egress service provider, datacenter name, datacenter network, datacenter domain, datacenter country, datacenter state, datacenter city, datacenter region, datacenter service, datacenter network border group, datacenter code, company name, company abuser score, company domain, company type, company network, company netname, abuse contact name, abuse contact address, abuse contact email, abuse contact phone, ASN, ASN abuser score, ASN route, ASN description, ASN country, ASN active, ASN organization, ASN domain, ASN abuse email, ASN type, ASN created, ASN updated, ASN registry, EU member, calling code, currency code, continent, country, country code, state, city, ZIP code, latitude, longitude, timezone, local time, local time Unix, daylight saving time, UTC offset, location accuracy, elapsed time, total elapsed time

## ipapi.is's plans (7)

- [ipapi.is, free, POST /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/free-post/llms.txt): $0.00 per 1,000, 80% complete
- [ipapi.is, free, Anonymous (no API key)](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/free-anonymous-no-api-key/llms.txt): $0.00 per 1,000, 40% complete
- [ipapi.is, top-up from $1, One-Time Credits, POST /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/top-up-from-1-one-time-credits-post/llms.txt): $0.033 per 1,000, 80% complete
- [ipapi.is, $20 monthly, Basic, POST /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/20-monthly-basic-post/llms.txt): $0.033 per 1,000, 80% complete
- [ipapi.is, $50 monthly, Medium, POST /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/50-monthly-medium-post/llms.txt): $0.017 per 1,000, 80% complete
- [ipapi.is, $100 monthly, Large, POST /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/100-monthly-large-post/llms.txt): $0.0067 per 1,000, 80% complete
- [ipapi.is, $200 monthly, Business, POST /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/200-monthly-business-post/llms.txt): $0.0033 per 1,000, 80% complete

## ipapi.is's calls (2)

- `POST /`: [ipapi.is, free, POST /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/free-post/llms.txt)
- `GET /`: [ipapi.is, free, GET /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/free-get/llms.txt)

## ipapi.is's APIs (1)

- [ipapi.is: IP company lookup API pricing, 7 plans, POST /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/free-post/llms.txt)

## ipapi.is: IP company lookup API alternatives

- [IPWho.org, $14 monthly, Startup, GET /ip/{ip}](https://datacircle.dev/ip-company-lookup-apis/ipwho-org/14-monthly-startup-get-ip-ip/llms.txt): $0.0019 per 1,000, 60% complete
- [IPHunter, €19.99 monthly](https://datacircle.dev/ip-company-lookup-apis/iphunter/19-99-monthly/llms.txt): $0.0031 per 1,000, 40% complete
- [DataAndAPIs, $24.99 monthly, Pro, POST /v1/ip](https://datacircle.dev/ip-company-lookup-apis/dataandapis/24-99-monthly-pro-post-v1-ip/llms.txt): $0.0033 per 1,000, 30% complete, 1 day (ASN, AS organization, AS registry country, AS range start, AS range end: 1 hour)
- [ALAPI, CNY 10 monthly](https://datacircle.dev/ip-company-lookup-apis/alapi/cny-10-monthly/llms.txt): $0.005 per 1,000, 40% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-04.

- https://ipapi.is?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipapi.is/developers.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipapi.is/free-tier.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipapi.is/pricing.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipapi.is/terms.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing