numbersonline
Simple pricing

Pricing

Looking up any number and seeing its supplementary spam-risk signal is free for everyone. Personal verification is a single $9 charge. Business verification is $29/year and renews automatically — you can cancel anytime from your dashboard. B2B identity-match and consent-first list-scrubbing are available by API or UI.

Public lookup
Free
forever · no signup
Functionality
  • Free reverse lookup — carrier, region & line type
  • Live 0–100 spam-risk score & recent community reports
  • No account, no card — ever — for lookups
  • Free self-service API key — every endpoint, no card
  • Tamper-evident signed receipts (Ed25519) & robocall-mitigation evidence
Rate limits
  • 10 lookups / min · 50 / day (pooled per account)
  • 10 spam-risk reports / day (pooled per account)
  • Free tier — not billed
Personal · Verified
$9
one-time · no recurring charge
Functionality
  • Everything in Free
  • Proof you own the line
  • “Verified & online” — never your private details
  • Others can confirm a name against your number (identity match)
  • Marketing-call opt-in / opt-out
Rate limits
  • Same free API pool — personal verification is your trust badge, not added API capacity
  • Verify a business number to raise API limits · not billed

A one-time badge, not a subscription — nothing renews.

Recommended
Business · Verified
$29
$29 / year · renews automatically · cancel anytime
Functionality
  • Everything in Personal
  • Business identity verification
  • Public profile: name, brand, address & details
  • Reviews & spam-watch
  • Verified badge on every lookup
  • Accountable report lane — reporter-weighted, builds credibility
  • Outbound pre-call enrollment — call-provenance spoofing defence
Rate limits
  • +60 lookups / min · +2,000 / day per verified business number
  • +100 spam-risk reports / day per verified business number
  • Pooled across your account; scales with each verified number
  • Standard prepaid top-ups ($5–$500) to burst past the pool

Billing & cancellation

Personal verification is a one-time $9 charge — no renewal, nothing to cancel. Business verification is $29/year and renews automatically on your billing date each year. You can cancel anytime from your dashboard (Billing); cancellation takes effect at the end of the current year and stops all future charges. See our Terms for full billing, renewal and refund details.

Looking up any number and seeing its supplementary spam-risk signal stays free for everyone — there is no per-lookup, per-review, or per-call fee. This is a trust badge for your number, not a background check — we make your number more trusted without ever selling who you are. Developers can create a free API key in seconds — no sales call — via self-service signup; see the API docs. Businesses and call centres that need the identity-match API or consent-first list-scrubbing at higher volume can talk to us about enterprise limits.

For businesses & call centres

Community spam-risk sensor
Turn the unknown callers you already field into a give-to-get signal — flag bad actors, earn reporting capacity, and shield your own numbers from spoofed reports.
Learn more →
AI-agent integration
Copy a ready-made prompt into your AI coding agent and wire numbers.online into your softphone, PBX, AI voice agent, chatbot, or CRM — exact endpoints and fail-open rules included.
Learn more →

Also available on a self-service API key:

API rate limits & fair use

Your plan’s own limits are on its card above — pooled per account and recomputed continuously from live state, so minting extra keys never raises them. Verifying a business number raises your limits; a personal number does not. Beyond the free pool there are two more tiers, plus the fair-use rules that apply to every key:

TierCaller-intelligence lookupsSpam-risk reportsBilling
Standard (prepaid)Burst beyond the free poolPooled (not metered)Pay-as-you-go per request
EnterpriseCustomCustomContact us
  • Other endpoints — single & bulk lookup, identity match, list scrubbing, CID, MCP and SBC redirect — default to 60 requests/minute per key.
  • When you exceed a limit we return HTTP 429 with a Retry-After header telling you how long to wait — honour it to back off cleanly.
  • Need more than the free allowance? Add prepaid credit to a standard-tier account ($5–$500 top-ups) and pay only for what you use. Batch endpoints accept up to 100 numbers per lookup and 1,000 per scrub request.
  • The try-it widgets on this site are keyless and lightly throttled per network. For production traffic, create a free API key.

Rate limits are operational fair-use controls and may be adjusted; they are indicative of current defaults, not a service-level guarantee.

Common questions

Is looking up a number free?

Yes — reverse lookups and the supplementary spam-risk signal are free for everyone, with no account or card. There is no per-lookup, per-review, or per-call fee.

Does the $9 personal verification renew?

No. Personal verification is a one-time $9 charge — there is no renewal and nothing to cancel.

Does verifying a personal number raise my API limits?

No. Personal verification is your trust badge; it does not add API capacity. Only a verified business number raises your account’s pooled API limits, and it scales with each one you verify.

How does business billing work, and can I cancel?

Business verification is $29/year and renews automatically on your billing date each year. You can cancel anytime from your dashboard; cancellation takes effect at the end of the current year and stops all future charges.

Do I need a key or a card to try it?

No. The try-it widgets on the site are keyless and lightly throttled. For production traffic, create a free API key in seconds via self-service signup — no sales call — and add prepaid credit ($5–$500) only if you need to burst past the free pool.