Zernio
Zernio
API Reference

Phone Numbers

Numbers

List phone numbersGETGet phone numberGETPurchase phone numberPOSTResolve a number claimGETRelease phone numberDELETE

Availability

List offerable number countriesGETCheck country availabilityGETSearch available numbersGET

Stock Watches

List stock watchesGETWatch an out-of-stock countryPOSTStop watching a countryDELETE

KYC

Get KYC form specGETSubmit KYCPOSTPre-validate KYC addressPOSTPre-review a KYC packetPOSTUpload a KYC documentPOSTView a KYC document on fileGETCreate a hosted KYC linkPOST

Remediation

Get declined requirementsGETResubmit a declined numberPOSTReply to the regulatory reviewerPOSTRespond to the regulatory reviewer (message + corrections)POST

Porting

Check portabilityPOSTCountry porting requirementsGETPort numbers inPOSTList port-in ordersGETResolve a port claimGETA port-in order's pending requirementsGETUpload a porting documentPOSTCancel a port-inDELETE

Other

Request the WhatsApp verification code for a numberPOST
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Phone Numbers

Stop watching a country

DELETE
/v1/phone-numbers/stock-watches/{id}

Authorization

bearerAuth
AuthorizationBearer <token>

API key authentication: send your Zernio API key in the Authorization header, prefixed with Bearer.

In: header

Path Parameters

id*string

Response Body

application/json

application/json

application/json

import Zernio from '@zernio/node';const zernio = new Zernio({ apiKey: process.env.ZERNIO_API_KEY });const { data } = await zernio.phonenumbers.deletePhoneNumberStockWatch({  path: {    id: 'abc123',  },});console.log(data);
{  "deleted": true}
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Watch an out-of-stock country

Get notified the first time an out-of-stock country has deliverable numbers again: an email to the account holder plus the `phone_number.stock_available` webhook. Stock is re-checked every 6h. One watch per country and number type; a repeat request returns the existing watch (200). The watch is consumed when it fires, so re-create it if you miss the stock. Up to 20 watches at once. Countries and types marked `fulfilment: request` by GET /v1/phone-numbers/countries can also be watched, but anything with `preOrderable: true` does not need a watch: submit KYC and the carrier sources the number to order. Pass `areaCode` (with `numberType`) to watch one sold-out area, for example an entry of `soldOutAreas` from GET /v1/phone-numbers/availability. Area stock is checked live on the same 6h cadence.

Get KYC form spec

For a Tier 3/4 country, the fields the end customer must provide (Telnyx regulatory requirements) before a number can be ordered: text, date, address, or file (document) per requirement.