numberintel.dev
Phone number intelligence: E.164 normalization, validity and plausibility, geography, timezone and current local time, plus carrier of record, line type (mobile/landline/VoIP) and in-service possibility for US numbers.
Go to this service →Our latest check (2026-10-14)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 462 ms
- Price
- $0.020 per call
- Paying buyers, last 30 days
- 2 (directory's own records)
- Paid calls, last 30 days
- 5
- Category
- Research, reports and analytics
- Address
- https://numberintel.dev/v1/number
Accuracy: paid answers checked against an independent record
Not yet in our paid checks. A seller we have not checked has neither passed nor failed.
For agents
This page as JSON: /sellers/880c214c24b1.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).