# IPGuardian, free: IP company lookup API

> Check any IP address against 140+ continuously updated threat intelligence feeds.

IPGuardian's Free plan for the IP company lookup API costs $0.00 per 1,000 IP addresses. IPGuardian's docs list 2 of the 10 fields on our checklist: Owner's name, ASN.
IPGuardian limits how many calls you get but gives no number.
We haven't run IPGuardian through [our IP company lookup API benchmark](https://datacircle.dev/best-ip-company-lookup-api.txt) yet.
Half of the 398 plans we rank by price cost $0.112 per 1,000 IP addresses or less. This plan and 30 others tie for the lowest price per 1,000 IP addresses of the 398 plans. [See the best free IP company lookup API plan.](https://datacircle.dev/best-ip-company-lookup-api.txt)
[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/ipguardian/free
- [IP company lookup API: the 15 best providers compared](https://datacircle.dev/best-ip-company-lookup-api.txt)
- Get it: https://ipguardian.net/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Request: `POST https://ipguardian.net/api/check`
- API key: not needed
- Its API docs: https://ipguardian.net/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Sold by: IPGuardian (https://ipguardian.net?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing)
- Checked: 2026-11-07

## In the answer

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

## Price

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

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Check any IP address against 140+ continuously updated threat intelligence feeds.

## Data

- Keep data: no limit
- Use data: You agree to use the Service only for lawful purposes and in accordance with these Terms. You agree not to: Use the Service in any way that violates any applicable federal, state, local, or international law, Attempt to overwhelm the Service with excessive requests, Attempt to gain unauthorized access to the Service or its related systems, Use the Service to harass, abuse, or harm another person [...] Free tier users are limited to 1,000 API requests per day. Exceeding this limit may result in temporary suspension of access.

## Plan

- Pay: $0

## Rate limit

- Per second: 1.67
- Batch: 100

## Speed

- Answer: in the call

## The call

- You send: one of ip or ips, Content-Type header "application/json"
- Method: POST
- Path: /api/check

## About the plan

- Plan: Free
- Who can get it: anyone

## The 19 fields the plan's answer can hold

IP address, listed in a blocklist, blocklist match type, blocklist matching subnet, blocklist name, blocklist category, blocklist maintainer, blocklist listed since, blocklist listed since precision, delisted blocklist name, delisted blocklist category, delisted at, ASN, ASN organization, ASN country code, network type, network type source, lookup time, addresses checked

## IPGuardian's plans (1)

- [IPGuardian, free](https://datacircle.dev/ip-company-lookup-apis/ipguardian/free/llms.txt): $0.00 per 1,000, 20% complete

## IPGuardian's calls (1)

- `POST /api/check`: [IPGuardian, free](https://datacircle.dev/ip-company-lookup-apis/ipguardian/free/llms.txt)

## IPGuardian's APIs (1)

- [IPGuardian: IP company lookup API pricing, 1 plan](https://datacircle.dev/ip-company-lookup-apis/ipguardian/free/llms.txt)

## IPGuardian: IP company lookup API alternatives

- [DNSlytics, free](https://datacircle.dev/ip-company-lookup-apis/dnslytics/free/llms.txt): $0.00 per 1,000, 30% complete
- [ipwhois.io, free](https://datacircle.dev/ip-company-lookup-apis/ipwhois-io/free/llms.txt): $0.00 per 1,000, 50% complete
- [IPBot, free, Anonymous, GET /v1/ip/{ip}](https://datacircle.dev/ip-company-lookup-apis/ipbot/free-anonymous-get-v1-ip-ip/llms.txt): $0.00 per 1,000, 80% complete
- [IP-API.com, free, POST /batch](https://datacircle.dev/ip-company-lookup-apis/ip-api-com/free-post-batch/llms.txt): $0.00 per 1,000, 50% complete, 24 hours
- [IPGeo by Techniknews, free](https://datacircle.dev/ip-company-lookup-apis/ipgeo-by-techniknews/free/llms.txt): $0.00 per 1,000, 60% 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 2026-11-07.

- https://ipguardian.net/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipguardian.net/openapi.yaml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://ipguardian.net/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing