NumLookupAPI · Rate Limits

Numlookupapi Rate Limits

NumLookupAPI enforces two things per account: a monthly request quota tied to your plan, and (on the Free tier) a per-minute request cap. The Free tier allows 100 requests per month at up to 10 requests per minute; the paid tiers (Basic, Pro, Scale) carry larger monthly allowances and remove the per-minute cap. Only successful calls count against the quota - validation errors and server errors are not charged. Requests to the /status endpoint do not count against the quota or rate limit. Exceeding a limit returns HTTP 429.

Numlookupapi Rate Limits is the machine-readable rate-limit profile for NumLookupAPI on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 6 rate-limit definitions, measuring requests.

The profile also includes 3 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Phone Validation, Number Verification, Rate Limiting, and Quotas.

6 Limits Throttle: 429
Phone ValidationNumber VerificationRate LimitingQuotas

Limits

Free Monthly Quota account
requests
100 per month
Free tier monthly allowance.
Free Per-Minute Rate account
requests
10 per minute
Per-minute cap applies to the Free tier only.
Basic Monthly Quota account
requests
5000 per month
No per-minute rate cap.
Pro Monthly Quota account
requests
50000 per month
No per-minute rate cap.
Scale Monthly Quota account
requests
250000 per month
No per-minute rate cap.
Status Endpoint account
requests
not counted
GET /v1/status does not count against the quota or rate limit.

Policies

Successful Calls Only
Only successful calls count against the monthly quota; validation and server errors are not charged.
Quota Headers
X-RateLimit-Limit/Remaining-Quota-Minute and -Month headers report remaining allowance on each response.
Backoff Strategy
Clients should implement exponential backoff with jitter on HTTP 429 responses and wait for the quota window to reset.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

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  • find_rate_limitsBrowse and filter every rate limit in the catalog.
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Call it yourself

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This rate limit 
curl "https://apis.io/api/v1/rate-limits/numlookupapi-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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