# NetworkCalc, free: Domain WHOIS API

> Clean REST endpoints for DNS, subnetting, encoding, security, and account automation.

NetworkCalc's Always FREE plan for the domain WHOIS API costs $0.00 per 1,000 domains. NetworkCalc's docs list 5 of the 9 fields on our checklist: Registrar, Created on, Expires on, Statuses, Abuse contact.
NetworkCalc limits how many calls you get but gives no number.
In [our domain WHOIS API benchmark](https://datacircle.dev/best-domain-whois-api.txt), the best plan from NetworkCalc scores 67.2 out of 100. NetworkCalc ranks 6th of 18 providers.
This plan is free. We rank 349 plans for domain WHOIS APIs by price. Half the plans cost $1.495 per 1,000 domains or less. [See the best free domain WHOIS API plan.](https://datacircle.dev/best-domain-whois-api.txt)
[Searchwire's $10 pack](https://datacircle.dev/domain-whois-apis/searchwire/10-pack/llms.txt) is the cheapest paid plan per 1,000 domains. Searchwire's domain WHOIS API costs nothing beyond the plan price.
[Enterno](https://datacircle.dev/domain-whois-apis/enterno/free-open-api/llms.txt), [Robtex](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt) and [DomScan](https://datacircle.dev/domain-whois-apis/domscan/49-monthly-scale-post-v1-whois-bulk/llms.txt) are the best domain WHOIS API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/domain-whois-apis/networkcalc/free
- [Domain WHOIS API: the 18 best providers compared](https://datacircle.dev/best-domain-whois-api.txt)
- Get it: https://networkcalc.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Request: `GET https://networkcalc.com/api/dns/whois/{hostname}`
- API key: not needed
- Its API docs: https://networkcalc.com/api/docs/dns?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- Sold by: NetworkCalc (https://networkcalc.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 56%
- Registrar: ✓
- Created on: ✓
- Expires on: ✓
- Statuses: ✓
- Abuse contact: ✓

## Price

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

## Charges

- Also pays for: Convert numbers · Lookup DNS · Lookup SPF · Encode or decode a value · Convert ranges and CIDR lists · Lookup TLS/SSL certificate · Calculate subnets · Plan VLSM subnets

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Clean REST endpoints for DNS, subnetting, encoding, security, and account automation.

## Data

- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 0.60 s

## The call

- You send: hostname
- Method: GET
- Path: /api/dns/whois/{hostname}

## About the plan

- Plan: Always FREE
- Who can get it: anyone

## The 11 fields the plan's answer can hold

request status, domain, domain status, domain status description, registrar, registrar IANA ID, registry domain ID, created date, expires date, abuse email, abuse phone

## NetworkCalc's plans (2)

- [NetworkCalc, free](https://datacircle.dev/domain-whois-apis/networkcalc/free/llms.txt): $0.00 per 1,000, 56% complete
- [NetworkCalc, $6.99 monthly](https://datacircle.dev/domain-whois-apis/networkcalc/6-99-monthly/llms.txt): 56% complete

## NetworkCalc's calls (1)

- `GET /api/dns/whois/{hostname}`: [NetworkCalc, free](https://datacircle.dev/domain-whois-apis/networkcalc/free/llms.txt)

## NetworkCalc's APIs (1)

- [NetworkCalc: domain WHOIS API pricing, 2 plans](https://datacircle.dev/domain-whois-apis/networkcalc/free/llms.txt)

## NetworkCalc: domain WHOIS API alternatives

- [Enterno, free, Scout](https://datacircle.dev/domain-whois-apis/enterno/free-scout/llms.txt): $0.00 per 1,000, 89% complete, live
- [Robtex, free](https://datacircle.dev/domain-whois-apis/robtex/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [DomScan, free, POST /v1/whois/bulk](https://datacircle.dev/domain-whois-apis/domscan/free-post-v1-whois-bulk/llms.txt): $0.00 per 1,000, 100% complete
- [WhoisFreaks, free, POST /v2.0/bulkwhois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/free-post-v2-0-bulkwhois-live/llms.txt): $0.00 per 1,000, 100% complete, live
- [Leadgen Romania, free, No key](https://datacircle.dev/domain-whois-apis/leadgen-romania/free-no-key/llms.txt): $0.00 per 1,000, 67% 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://networkcalc.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://networkcalc.com/api/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://networkcalc.com/api/docs/dns?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://networkcalc.com/api/docs/test/?method=GET&endpoint=%2Fapi%2Fdns%2Fwhois%2Fnetworkcalc.com&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://networkcalc.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing
- https://networkcalc.com/support?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=domain-whois-api-pricing