Datacircle

51Degrees IP company lookup API pricing

51Degrees' siteThis page as plain textIP company lookup API in 2026: the best of 80+ compared51Degrees: IP company lookup API alternatives

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40% complete: 4 of the 10 fields on our checklistSee the 10 fields
Contact usWe haven't run 51Degrees through our IP company lookup API benchmark yet.51Degrees gives this plan's price on request. We rank 606 plans for IP company lookup APIs by price. Half the plans cost $0.167 or less per 1,000 IP addresses. 51Degrees has no free IP company lookup API plan. 203 IP company lookup API plans on our price sheet are free. IPKit's free plan scores highest of the free plans in our benchmark, at 94.1 out of 100.IPScanner's $5 pack 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 costs the least for 10,000 IP addresses a month: $1.00.IPKit, thenetworkery and IPLogs are the best IP company lookup API providers in the Datacircle benchmark.
Type a number to see the cheapest 51Degrees plan for that many IP addresses. The table below then sorts the other plans by what each costs.
Plan: Bespoke 51Degrees' only plan
Call: Docs behind sign-up 51Degrees' only call
API: IP company lookup API one of 51Degrees' 2 APIs

About this item

  • A copy at most 1 day old. You get each IP address's owner from 51Degrees' database.
  • 4 of the 10 fields on our checklist. Owner's name, ASN, Network range, Country.
  • No public price. You ask 51Degrees for one.
  • One call. 51Degrees shows the call's docs once you sign up. The call returns each IP address's owner.
  • Who can get it: with conditions. Keep data: no limit. Use data: with conditions.

51Degrees: IP company lookup API alternatives

51Degrees alternatives: other IP company lookup API providers by price

We list other providers' plans with no public price. These plans come closest to this plan in number of key fields. Each plan in the table gives live data or data at most a day old.

This plan51Degrees, contact usIP-API.com, contact us, Enterprise, POST /batchDataAndAPIs, contact us, Custom solution, GET /v1/ip/{address}IPGeolocation.io, contact us, Enterprise, GET /v3/asnAiwen IP, contact us, 300 calls a day for a year
Completeness40%50%40%40%40%
Billingcontactcontactcontactcontactcontact
Enough forno limitno limitnot publishednot published300 calls a day
Freshness1 day24 hours1 day (ASN, AS organization, AS registry country, AS range start, AS range end: 1 hour)24 hours1 day
Who can get ittraders only: "We only wish to contract with traders, within the meaning of section 2 of the Consumer Rights Act 2015"anyoneanyone, no credit card needed to sign upanyone who contacts salesanyone who binds a phone number and gives a name, company, industry and position

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.

  1. 51degrees.com
  2. 51degrees.com/developers/ip-tester
  3. 51degrees.com/documentation/_ip_intelligence__overview.html
  4. 51degrees.com/documentation/index.html
  5. 51degrees.com/pricing
  6. 51degrees.com/terms/cloud-services-terms/20261106
  7. 51degrees.com/terms/free/20261106
  8. 51degrees.com/terms/general-terms-and-conditions/20261019
  9. github.com/51Degrees/ip-intelligence-dotnet

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Owner's name
  • Owner's domain, not in the answer
  • ASN
  • Network range
  • Industry, not in the answer
  • Company size, not in the answer
  • Country
  • Region and city, not in the answer
  • VPN and proxy, not in the answer
  • Hosting, not in the answer
Price
Percall
Billingcontact
In their words
Their pitchNetwork data: ISP, organization, connection type
Data
Freshness1 day
Keep datano limit
Use data2.2 You shall: [...] 2.2.2 use the Cloud Services solely for your own internal business purposes or, if you are an agency, developer or other service provider using the Cloud Services for, or on behalf of, your client, solely for that client's internal business purposes [...] 2.3 You shall not: 2.3.1 exceed the number of permitted Requests set out in an Order, nor 2.3.2 perform any batch or offline processing using the Cloud Services and shall only use those services in connection with real-time Requests (via web or client applications) only.
Plan
Enough forno limit
Speed
Answerin the call
The call
You sendDocs behind sign-up
About the plan
PlanBespoke
Who can get ittraders only: "We only wish to contract with traders, within the meaning of section 2 of the Consumer Rights Act 2015"
The 9 fields the plan's answer can hold

IP address, IP range start, IP range end, registered name, registered owner, registered country, registered country GeoName ID, ASN, ASN name

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