Numbers Online · Rate Limits

Numbers Online Rate Limits

Rate limits are account-pooled and business-scaled: the pooled budgets (lookups, inbound caller-intelligence, the outbound pre-call check, community reports) are shared across every key on an account and recomputed from live state, so minting extra keys never raises them; verifying a business number raises them per number, personal ($9) verification does not. All other endpoints use a per-key 60 requests/minute window. On exhaustion the API returns 429 with a Retry-After header (seconds), mirrored as retry_after_seconds in the flat JSON error body, with code rate_limited_key, rate_limited_pool or rate_limited_ip. No X-RateLimit-* or IETF RateLimit-* headers are documented. The provider states limits are indicative fair-use defaults, not a service-level guarantee.

Numbers Online Rate Limits is the machine-readable rate-limit profile for Numbers Online on the APIs.io network, in the API Commons Rate Limits shape.

It captures 11 rate-limit definitions, across the free and business-verified tiers, measuring requests_per_minute, lookups_per_minute, lookups_per_day, reports_per_day, and numbers_per_minute.

Limit state is signalled in the retryAfter, bodyField, rateLimitRemaining, and rateLimitLimit response headers, and an exhausted limit returns HTTP 429.

The profile also includes response codes documented for throttled.

Tagged areas include Phone Intelligence, Caller ID, CNAM, Reverse Phone Lookup, and Spam Detection.

11 Limits Exhausted: HTTP 429 retryAfterbodyFieldrateLimitRemainingrateLimitLimit
Transcribed from the provider's documentation on 2026-09-19.
View Source
Phone IntelligenceCaller IDCNAMReverse Phone LookupSpam DetectionDo Not CallTelephonySTIR/SHAKENMCPAgent-NativeComplianceCompanyA2A

Limits

Per-key default window (lookup, scrub, CID, MCP, SBC and every non-pooled endpoint) key
requests_per_minute · minute
60
Free / unverified pooled lookups per minute account
lookups_per_minute · minute
10
Free / unverified pooled lookups per day account
lookups_per_day · day
50
Free / unverified pooled spam-risk reports per day account
reports_per_day · day
10
Per verified business number — added lookups per minute account
lookups_per_minute · minute
60
+60/min per verified business number, pooled across the account
Per verified business number — added lookups per day account
lookups_per_day · day
2000
Per verified business number — added reports per day account
reports_per_day · day
100
Free-tier scrub allowance (counted in numbers, not requests) account
numbers_per_minute · minute
1000
5,000/day floor; verified business numbers scale it; a 1,000-number batch costs 1,000 pool units
Free-tier scrub allowance per day account
numbers_per_day · day
5000
Self-service signup ip
requests_per_hour · hour
3
Failed authentication attempts ip
failed_auth_attempts
threshold not published

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

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/numbers-online-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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