# Ipregistry, free, POST /: IP company lookup API

> The Ipregistry API turns an IP address into actionable data: where it is, which network and company it belongs to, and whether it hides behind a VPN, proxy, Tor or known abusive infrastructure.

Ipregistry's Free plan for the IP company lookup API costs $0.00 per 1,000 IP addresses. Ipregistry'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 Ipregistry scores 65.8 out of 100. Ipregistry ranks 11th 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/ipregistry/free-post
- [IP company lookup API: the 15 best providers compared](https://datacircle.dev/best-ip-company-lookup-api.txt)
- Get it: https://ipregistry.co/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Request: `POST https://api.ipregistry.co/`
- API key: with the plan, on https://ipregistry.co/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Its API docs: https://ipregistry.co/docs/endpoints?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing#batch-ip
- Sold by: Ipregistry (https://ipregistry.co?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

- Start fee: $0.00
- Also pays for: from the same budget: Single IP lookup · Single AS lookup · Batch AS lookup · Origin IP lookup · Origin AS lookup · User-Agent parsing · Origin User-Agent parsing

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: The Ipregistry API turns an IP address into actionable data: where it is, which network and company it belongs to, and whether it hides behind a VPN, proxy, Tor or known abusive infrastructure.

## Data

- Freshness: 1 day
- Keep data: "You shall not (and you shall not permit anyone else to): [...] use, store, or access any Ipregistry Data & Services, after the termination of this Agreement"
- Use data: "When using a free version of the Services, this license is strictly limited to your personal, non-commercial use, in the manner permitted by these Terms." [...] "Access to and utilization of Ipregistry Data & Services are exclusively limited to internal restricted business purposes, including but not limited to content localization, fraud detection and prevention, geographic reporting, network performance enhancement, and other similar purposes, with no redistribution permitted, unless explicitly authorized in writing by Ipregistry." [...] "You shall not (and you shall not permit anyone else to): reproduce, copy, modify, distribute, market, display, transfer, sublicense, assign, prepare derivative work(s) or adaptation(s) based on, sell, exchange, barter or transfer, rent, lease, loan, time-share, resell, or in any other manner exploit Ipregistry Data & Services, unless you have been specifically told that you may do so by Ipregistry, in writing, [...] access the Services for the purpose of collecting Content for sale or resale without the express written consent of Ipregistry"

## Plan

- Pay: $0
- You get: 20,000 credits
- Enough for: 20,000 results
- Expires: never

## Rate limit

- Concurrent: no limit
- Batch: 1,024

## Speed

- Answer: in the call

## The call

- You send: JSON array as POST body. Optional: hostname, fields
- Method: POST
- Path: /

## About the plan

- Plan: Free
- Who can get it: anyone over 13 who creates an account

## The 77 fields the plan's answer can hold

IP address, IP type, hostname, carrier name, carrier MCC, carrier MNC, company domain, company name, company type, ASN, connection domain, connection anycast, connection organization, connection route, connection type, currency code, currency name, currency native name, currency plural name, currency native plural name, currency symbol, currency native symbol, currency decimal separator, currency group separator, currency negative prefix, currency negative suffix, currency positive prefix, currency positive suffix, continent code, continent name, country area, country borders, country calling code, country capital, country code, country name, country population, country population density, country flag emoji, country flag emoji Unicode, country flag EmojiTwo, country flag Noto, country flag Twemoji, country flag Wikimedia, country languages, country language code, country language name, country language native name, country TLD, region code, region name, city, postal code, latitude, longitude, language code, language name, language native name, in EU, is abuser, is anonymous, is attacker, is bogon, is cloud provider, is proxy, is relay, is residential proxy, is threat, is Tor, is Tor exit, is VPN, time zone ID, time zone abbreviation, time zone current time, time zone name, time zone offset, time zone in daylight saving

## Ipregistry's plans (15)

- [Ipregistry, free, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/free-post/llms.txt): $0.00 per 1,000, 80% complete, 1 day
- [Ipregistry, $10 pack, 15,000 credits, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/10-pack-15000-credits-post/llms.txt): $0.667 per 1,000, 80% complete, 1 day
- [Ipregistry, $50 pack, 100,000 credits, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/50-pack-100000-credits-post/llms.txt): $0.50 per 1,000, 80% complete, 1 day
- [Ipregistry, $100 pack, 250,000 credits, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/100-pack-250000-credits-post/llms.txt): $0.40 per 1,000, 80% complete, 1 day
- [Ipregistry, $500 pack, 1,750,000 credits, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/500-pack-1750000-credits-post/llms.txt): $0.286 per 1,000, 80% complete, 1 day
- [Ipregistry, $29 monthly, Starter, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/29-monthly-starter-post/llms.txt): $0.29 per 1,000, 80% complete, 1 day
- [Ipregistry, $79 monthly, Professional, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/79-monthly-professional-post/llms.txt): $0.263 per 1,000, 80% complete, 1 day
- [Ipregistry, $199 monthly, Business, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/199-monthly-business-post/llms.txt): $0.173 per 1,000, 80% complete, 1 day
- [Ipregistry, $299 monthly, Enterprise, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/299-monthly-enterprise-post/llms.txt): $0.598 per 1,000, 80% complete, 1 day
- [Ipregistry, $399 monthly, Scale, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/399-monthly-scale-post/llms.txt): $0.163 per 1,000, 80% complete, 1 day
- [Ipregistry, $290 yearly, Starter, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/290-yearly-starter-post/llms.txt): $0.242 per 1,000, 80% complete, 1 day
- [Ipregistry, $790 yearly, Professional, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/790-yearly-professional-post/llms.txt): $0.219 per 1,000, 80% complete, 1 day
- [Ipregistry, $1,990 yearly, Business, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/1990-yearly-business-post/llms.txt): $0.144 per 1,000, 80% complete, 1 day
- [Ipregistry, $2,990 yearly, Enterprise, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/2990-yearly-enterprise-post/llms.txt): $0.498 per 1,000, 80% complete, 1 day
- [Ipregistry, $3,990 yearly, Scale, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/3990-yearly-scale-post/llms.txt): $0.136 per 1,000, 80% complete, 1 day

## Ipregistry's calls (2)

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

## Ipregistry's APIs (1)

- [Ipregistry: IP company lookup API pricing, 15 plans, POST /](https://datacircle.dev/ip-company-lookup-apis/ipregistry/free-post/llms.txt)

## Ipregistry: IP company lookup API alternatives

- [IPGeolocation.io, $19 monthly, Starter, GET /v3/ipgeo](https://datacircle.dev/ip-company-lookup-apis/ipgeolocation-io/19-monthly-starter-get-v3-ipgeo/llms.txt): $0.127 per 1,000, 80% complete, 24 hours
- [ipbase, $99.99 yearly, Small (yearly), GET /v2/info](https://datacircle.dev/ip-company-lookup-apis/ipbase/99-99-yearly-small-yearly-get-v2-info/llms.txt): $0.128 per 1,000, 80% complete, 1 day
- [IPLocate, $490 yearly, 300,000 requests per month, billed annually, POST /batch](https://datacircle.dev/ip-company-lookup-apis/iplocate/490-yearly-300000-requests-per-month-billed-annually-post-batch/llms.txt): $0.136 per 1,000, 80% complete, 1 day
- [ipify, $139 pack, One-time purchase: 1,000,000 Credits, GET /api/v2/country](https://datacircle.dev/ip-company-lookup-apis/ipify/139-pack-one-time-purchase-1000000-credits-get-api-v2-country/llms.txt): $0.139 per 1,000, 40% complete, 1 day

## 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://ipregistry.co/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/docs/bulk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/docs/endpoints?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/docs/filtering?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/docs/hostname?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/docs/responses/ip-address-fields?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/docs/throttling?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/how-credits-work?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipregistry.co/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing