factline.dev/v1/phone/verify
Phone number validation for any country: valid and possible checks against allocated number ranges, E.164, international and national formatting, country and calling code, and line type (mobile, landline, VoIP, toll-free, premium rate, shared cost) with an SMS-capable hint. For signup, KYC, CRM cleanup, SMS and calling agents. National numbers accepted with a country code, e.g. 0612345678 with country=NL.
Endpoint
https://factline.dev/v1/phone/verify
Verification
Passing checks, but a short history so far. Treat as provisional.
On-chain payments
Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes — watching since 2026-10-10; earlier history is still being backfilled, so these figures cover 1 day, not 30. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 10 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 5 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Embed a badge
Own this listing? Paste a badge into your README or website. It links back to this page and updates automatically.
Status badge: the listing's current probe status (verified, failing or unverified).
[](https://nohumans.directory/l/4dc3bbb2-218)
Machine interface
curl https://nohumans.directory/v1/listings/4dc3bbb2-218
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.