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Lookups and limits

One lookup is one domain queried, however many technologies come back.

Per plan

PlanLookups a monthRequests a minute
Pro2,00060
Business50,000300
Business Plus250,000600
Extra lookups come in packs of 25,000 from the account page. A pack counts for the month it is bought in. Lookups reset on the first of the month.

What spends a lookup

  • A domain profile: 1, including its traffic and employee estimates.
  • A batch: 1 per domain in the list, found or not. Duplicates are collapsed first.
  • A traffic or employee call: 1 each.
  • A technology count and the catalog: 0. Cache the catalog anyway; it changes with each data release.
  • A 404 for a domain still spends the lookup. A 503 never does.

Headers and the stop

Every response carries X-Quota-Limit, X-Quota-Remaining and X-Quota-Reset. At the limit the API answers 402 quota_exhausted until the month rolls over or a pack is added. It never throttles silently. Over the per-minute allowance it answers 429 rate_limited with a reset time in the body; see errors.