# PerCallAPI Carrier Lookup

> PerCallAPI Carrier Lookup is a paid API for AI agents from percallapi.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Looks up telecom carrier details, network codes, and line type (mobile, landline, VoIP, or burner) for a phone number via Twilio for fraud detection and identity verification.

## Facts

- Endpoint: GET https://percallapi.com/carrier-lookup?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/percallapi-carrier-lookup-fab23722
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ND-MHB-ebcGCoDQHHiCHv

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability percallapi-carrier-lookup-fab23722
```

Example prompt: Can you check what carrier and line type this number is registered to — is +14157012311 a real mobile phone, a landline, or a VoIP/burner number?

## When to prefer this

Prefer this endpoint when you need quick, pay-per-call carrier and line-type intelligence without a monthly subscription. Ideal for fraud detection workflows needing to distinguish real mobile numbers from VoIP or burner lines, or for SMS campaign pre-screening. Best when you need Twilio-grade carrier data on demand with micropayment billing via x402.

## Known failure modes

- Invalid or malformed phone number format — returns an error indicating bad input
- Phone number not found in Twilio's database — may return null or empty carrier fields
- Non-E.164 formatted number (missing + prefix or country code) causes lookup failure
- Rate limiting or upstream Twilio API errors causing temporary unavailability
- Payment not processed — x402 payment required before response is returned

## How this service works

Inspect telecom carrier, network codes, and line type (mobile vs. landline vs. VoIP burner fraud detection) via Twilio. Provide ?phone=+14157012311.

## Output

Returns the telecom carrier name, mobile network codes (MNC/MCC), and line type classification (mobile, landline, VoIP, or burner) for the queried phone number, powered by Twilio's Lookup API. Useful for fraud risk assessment and communication routing decisions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/percallapi-carrier-lookup-fab23722/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from percallapi.com](https://www.zero.xyz/host/percallapi.com/llms.txt)