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