# Synthient, contact us, Enterprise, POST /api/v4/lookup/ips: IP geolocation API

> Send one IP or domain and get ASN, ISP, country, network type, proxy provider, behavior tags, and a 0 to 100 risk score.

Synthient's Enterprise plan lets you call the IP geolocation API. We check each provider's docs for 8 fields. Synthient's docs list 6: Country, Region and city, Coordinates, Time zone, ASN, Owner's name.
No public price. Each IP address costs 0.9 Synthient credits. Ask Synthient what a credit costs.
We haven't run Synthient through [our IP geolocation API benchmark](https://datacircle.dev/best-ip-geolocation-api.txt) yet.
Synthient gives this plan's price on request. We rank 429 plans for IP geolocation APIs by price. Half the plans cost $0.214 or less per 1,000 IP addresses. Synthient has no free IP geolocation API plan. [149 IP geolocation API plans on our price sheet are free.](https://datacircle.dev/best-ip-geolocation-api.txt) [Apixies' free plan](https://datacircle.dev/ip-geolocation-apis/apixies/free-sandbox-no-account/llms.txt) scores highest of the free plans in our benchmark, at 89.6 out of 100.
[IPWho.org's $99 monthly plan](https://datacircle.dev/ip-geolocation-apis/ipwho-org/99-monthly-enterprise-get-ip-ip/llms.txt) is the cheapest paid plan per 1,000 IP addresses, with no charge per call. You get as many IP addresses as IPWho.org's rate limit allows. [Api.co.id's Rp19,000 monthly plan](https://datacircle.dev/ip-geolocation-apis/api-co-id/rp19000-monthly/llms.txt) costs the least for 10,000 IP addresses a month: about $1.05.
[Api.co.id's Rp99,000 (about $5) monthly plan](https://datacircle.dev/ip-geolocation-apis/api-co-id/rp99000-monthly/llms.txt) covers any number of IP addresses, and costs less up front than IPWho.org's $99 monthly plan.
[Apixies](https://datacircle.dev/ip-geolocation-apis/apixies/free-sandbox-no-account/llms.txt), [getmyip.pro](https://datacircle.dev/ip-geolocation-apis/getmyip-pro/free-getmyip-get-v1-ip/llms.txt) and [IPFlare](https://datacircle.dev/ip-geolocation-apis/ipflare/16-80-monthly-unlimited-get-ip/llms.txt) are the best IP geolocation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/ip-geolocation-apis/synthient/contact-us-enterprise-post-api-v4-lookup-ips
- [IP geolocation API in 2026: the best of 20+ compared](https://datacircle.dev/best-ip-geolocation-api.txt)
- Get it: https://synthient.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- Request: `POST https://api.synthient.com/api/v4/lookup/ips`
- API key: with the plan, on https://synthient.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- Its API docs: https://docs.synthient.com/ipapi?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing#look-up-multiple-ips
- Sold by: Synthient (https://synthient.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing)
- Checked: 2026-11-11

## In the answer

- Completeness: 75%
- Country: ✓
- Region and city: ✓
- Coordinates: ✓
- Time zone: ✓
- ASN: ✓
- Owner's name: ✓

## Price

- Per: result
- Billing: contact

## In their words

- Their pitch: Send one IP or domain and get ASN, ISP, country, network type, proxy provider, behavior tags, and a 0 to 100 risk score.

## Data

- Keep data: no API terms
- Use data: "Lookup API responses, Parquet feed snapshots, Firehose streams, and Helios evidence are licensed by the signed agreement for internal fraud, abuse, authentication, and security workflows." [...] "resale, redistribution, or public mirroring requires explicit permission."

## Rate limit

- Per second: 100
- Batch: 1,000

## Speed

- Answer: in the call

## The call

- You send: ips
- Method: POST
- Path: /api/v4/lookup/ips

## About the plan

- Plan: Enterprise
- Who can get it: teams that pass its access review: a work email and organization, then a signed agreement

## The 10 fields the plan's answer can hold

IP address, country, region, city, latitude, longitude, timezone, geohash, ISP, ASN

## Synthient's plans (4)

- [Synthient, contact us, Enterprise, POST /api/v4/lookup/ips](https://datacircle.dev/ip-geolocation-apis/synthient/contact-us-enterprise-post-api-v4-lookup-ips/llms.txt): 75% complete
- [Synthient, contact us, Researcher, POST /api/v4/lookup/ips](https://datacircle.dev/ip-geolocation-apis/synthient/contact-us-researcher-post-api-v4-lookup-ips/llms.txt): 75% complete
- [Synthient, contact us, Startup, POST /api/v4/lookup/ips](https://datacircle.dev/ip-geolocation-apis/synthient/contact-us-startup-post-api-v4-lookup-ips/llms.txt): 75% complete
- [Synthient, contact us, Business, POST /api/v4/lookup/ips](https://datacircle.dev/ip-geolocation-apis/synthient/contact-us-business-post-api-v4-lookup-ips/llms.txt): 75% complete

## Synthient's calls (2)

- `GET /api/v4/lookup/ip/{ip_address}`: [Synthient, contact us, Enterprise, GET /api/v4/lookup/ip/{ip_address}](https://datacircle.dev/ip-geolocation-apis/synthient/contact-us-enterprise-get-api-v4-lookup-ip-ip-address/llms.txt)
- `POST /api/v4/lookup/ips`: [Synthient, contact us, Enterprise, POST /api/v4/lookup/ips](https://datacircle.dev/ip-geolocation-apis/synthient/contact-us-enterprise-post-api-v4-lookup-ips/llms.txt)

## Synthient's APIs (2)

- [Synthient IP company lookup API pricing, 4 plans, GET /api/v4/lookup/ip/{ip_address}](https://datacircle.dev/ip-company-lookup-apis/synthient/contact-us-enterprise-get-api-v4-lookup-ip-ip-address/llms.txt)
- [Synthient IP company lookup API pricing, 4 plans, POST /api/v4/lookup/ips](https://datacircle.dev/ip-company-lookup-apis/synthient/contact-us-enterprise-post-api-v4-lookup-ips/llms.txt)
- [Synthient IP geolocation API pricing, 4 plans, POST /api/v4/lookup/ips](https://datacircle.dev/ip-geolocation-apis/synthient/contact-us-enterprise-post-api-v4-lookup-ips/llms.txt)

## Synthient: IP geolocation API alternatives

[Synthient alternatives: other IP geolocation API providers by price](https://datacircle.dev/synthient-alternatives.txt)

We list other providers' plans with no public price. These plans come closest to this plan in number of key fields.

- [Ambriel, contact us](https://datacircle.dev/ip-geolocation-apis/ambriel/contact-us/llms.txt): 75% complete, 1 day
- [APILayer, contact us](https://datacircle.dev/ip-geolocation-apis/apilayer/contact-us/llms.txt): 75% complete
- [Arch Tools, contact us](https://datacircle.dev/ip-geolocation-apis/arch-tools/contact-us/llms.txt): 75% complete
- [Dev.me, contact us](https://datacircle.dev/ip-geolocation-apis/dev-me/contact-us/llms.txt): 75% 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.synthient.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://docs.synthient.com/authentication?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://docs.synthient.com/ipapi?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://docs.synthient.com/rate-limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://synthient.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://synthient.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing
- https://synthient.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-geolocation-api-pricing