# Watch-IP, free, POST /v1/lookup: IP company lookup API

> Batch version of GET /v1/lookup/{ip}. Accepts up to 100 IPs per call.

Watch-IP's Free plan for the IP company lookup API costs $0.00 per 1,000 IP addresses. We check each provider's docs for 10 fields. Watch-IP's docs list 2: Owner's name, ASN.
We haven't run Watch-IP through [our IP company lookup API benchmark](https://datacircle.dev/best-ip-company-lookup-api.txt) yet.
This plan is free. We rank 611 plans for IP company lookup APIs by price. Half the plans cost $0.185 or less per 1,000 IP addresses. [199 IP company lookup API plans on our price sheet are free.](https://datacircle.dev/best-ip-company-lookup-api.txt) [IPKit's free plan](https://datacircle.dev/ip-company-lookup-apis/ipkit/free/llms.txt) scores highest of the free plans in our benchmark, at 94.1 out of 100.
[IPScanner's $5 pack](https://datacircle.dev/ip-company-lookup-apis/ipscanner/5-pack-pay-as-you-go-5-get-asn-ip/llms.txt) is the cheapest paid plan per 1,000 IP addresses. IPScanner's IP company lookup API costs nothing beyond the plan price. [ipapi.is' top-up plan](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/top-up-from-1-one-time-credits-post/llms.txt) costs the least for 10,000 IP addresses a month: $1.00.
[IPKit](https://datacircle.dev/ip-company-lookup-apis/ipkit/free/llms.txt), [thenetworkery](https://datacircle.dev/ip-company-lookup-apis/thenetworkery/free/llms.txt) and [DC5 WHOIS](https://datacircle.dev/ip-company-lookup-apis/dc5-whois/free-public-instance-get-api-v1-lookup/llms.txt) are the best IP company lookup API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/ip-company-lookup-apis/watch-ip/free-post-v1-lookup
- [IP company lookup API in 2026: the best of 70+ compared](https://datacircle.dev/best-ip-company-lookup-api.txt)
- Get it: https://watch-ip.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Request: `POST https://api.watch-ip.com/v1/lookup`
- API key: with the plan, on https://watch-ip.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Its API docs: https://watch-ip.com/docs/reference/bulk-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Sold by: Watch-IP (https://watch-ip.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing)
- Checked: 2026-11-11

## In the answer

- Completeness: 20%
- Owner's name: ✓
- ASN: ✓

## Price

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

## Charges

- Also pays for: Look up the requesting visitor's geolocation · Check an email address · Check a batch of email addresses · Submit an email list for asynchronous checking · Score a signup from its email address and IP · Check an IP against a user's last-known location for impossible travel · from the same budget: Look up geolocation for an arbitrary IP address

## Overage

- Units cap: hard

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Batch version of GET /v1/lookup/{ip}. Accepts up to 100 IPs per call.

## Data

- Keep data: no limit
- Use data: You may use the Service only for lawful purposes and in compliance with these Terms, our Privacy Policy, and (where applicable) our Data Processing Addendum. Without limiting the foregoing, you agree not to: [...] use the Service to build or contribute to a competing IP geolocation, threat-intelligence, or lookup product, or to systematically reconstruct our underlying threat lists or GeoIP data through repeated queries, use geolocation, VPN/Tor/datacenter, or risk-scoring output as the sole automated basis for a decision that produces legal or similarly significant effects for an individual [...] without a meaningful human review step, use the Service to discriminate against, single out, or take adverse action against individuals on the basis of a protected characteristic that can be inferred or approximated from location data, [...] We grant you a non-exclusive, non-transferable license to call the API and use the dashboard for your own internal business purposes and to serve your own end users. You may not resell, sublicense, or provide standalone access to the Service's underlying data (as opposed to a product or feature you've built using it) without our prior written consent.

## Plan

- Pay: $0
- You get: 500 requests a month
- Enough for: 500 results a month

## Rate limit

- Per second: 0.5 (30 a minute)
- Batch: 100

## Speed

- Answer: in the call

## The call

- You send: ips
- Method: POST
- Path: /v1/lookup

## About the plan

- Plan: Free
- Who can get it: anyone with an account

## The 4 fields the plan's answer can hold

IP address, found, ASN, ASN organization

## Watch-IP's plans (8)

- [Watch-IP, free, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/free-post-v1-lookup/llms.txt): $0.00 per 1,000, 20% complete
- [Watch-IP, $9 monthly, Starter, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/9-monthly-starter-post-v1-lookup/llms.txt): $0.18 per 1,000, 20% complete
- [Watch-IP, $29 monthly, Growth, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/29-monthly-growth-post-v1-lookup/llms.txt): $0.097 per 1,000, 20% complete
- [Watch-IP, $79 monthly, Scale, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/79-monthly-scale-post-v1-lookup/llms.txt): $0.079 per 1,000, 20% complete
- [Watch-IP, $97.20 yearly, Starter, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/97-20-yearly-starter-post-v1-lookup/llms.txt): $0.162 per 1,000, 20% complete
- [Watch-IP, $313.20 yearly, Growth, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/313-20-yearly-growth-post-v1-lookup/llms.txt): $0.087 per 1,000, 20% complete
- [Watch-IP, $853.20 yearly, Scale, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/853-20-yearly-scale-post-v1-lookup/llms.txt): $0.071 per 1,000, 20% complete
- [Watch-IP, contact us, Enterprise, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/contact-us-enterprise-post-v1-lookup/llms.txt): 20% complete

## Watch-IP's calls for this API (2)

- `POST /v1/lookup`: [Watch-IP, free, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/free-post-v1-lookup/llms.txt)
- `GET /v1/lookup/{ip}`: [Watch-IP, free, GET /v1/lookup/{ip}](https://datacircle.dev/ip-company-lookup-apis/watch-ip/free-get-v1-lookup-ip/llms.txt)

## Watch-IP's APIs (2)

- [Watch-IP Email verification API pricing, 8 plans, POST /v1/email/batch](https://datacircle.dev/validate-email-apis/watch-ip/free-post-v1-email-batch/llms.txt)
- [Watch-IP Email verification API pricing, 8 plans, POST /v1/email/validate](https://datacircle.dev/validate-email-apis/watch-ip/free-post-v1-email-validate/llms.txt)
- [Watch-IP Email verification API pricing, 8 plans, POST /v1/email/jobs](https://datacircle.dev/validate-email-apis/watch-ip/free-post-v1-email-jobs/llms.txt)
- [Watch-IP IP company lookup API pricing, 8 plans, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/free-post-v1-lookup/llms.txt)

## Watch-IP: IP company lookup API alternatives

[Watch-IP alternatives: other IP company lookup API providers by price](https://datacircle.dev/watch-ip-alternatives.txt)

We list Watch-IP's cheapest paid plan first. Next we list other providers' plans closest to Watch-IP in price per 1,000 IP addresses.

- [Watch-IP, $853.20 yearly, Scale, POST /v1/lookup](https://datacircle.dev/ip-company-lookup-apis/watch-ip/853-20-yearly-scale-post-v1-lookup/llms.txt): $0.071 per 1,000, 20% complete
- [ipify, $699 pack, One-time purchase: 10,000,000 Credits, GET /api/v2/country](https://datacircle.dev/ip-company-lookup-apis/ipify/699-pack-one-time-purchase-10000000-credits-get-api-v2-country/llms.txt): $0.07 per 1,000, 60% complete, 1 day
- [IPHub, $504 yearly, Basic 600,000 requests / month, annually, GET /ip/{ip}](https://datacircle.dev/ip-company-lookup-apis/iphub/504-yearly-basic-600000-requests-month-annually-get-ip-ip/llms.txt): $0.07 per 1,000, 50% complete
- [DB-IP, €238.80 yearly, Starter 10K Core API, GET /v2/{apiKey}/as/{ipAddress}](https://datacircle.dev/ip-company-lookup-apis/db-ip/238-80-yearly-starter-10k-core-api-get-v2-apikey-as-ipaddress/llms.txt): $0.074 per 1,000, 40% complete
- [Network Data Labs, $90 yearly, Starter, POST /v0/bulk](https://datacircle.dev/ip-company-lookup-apis/network-data-labs/90-yearly-starter-post-v0-bulk/llms.txt): $0.075 per 1,000, 70% 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 2026-11-11.

- https://api.watch-ip.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://watch-ip.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://watch-ip.com/docs/errors?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://watch-ip.com/docs/reference/bulk-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://watch-ip.com/legal/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://watch-ip.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing