Now available for banks and fintechs in LATAM

Silent security

for financial services.

No telco contracts. No friction. No OTP.

Telnext gives banks and fintechs real-time identity verification using carrier network data — the strongest signal available.

start for freeview docs
6+security APIs
<200msverification
tier-1CPaaS partners
99.9%uptime SLA
import { Telnext } from '@telnext/sdk'

const client = new Telnext({
  apiKey: process.env.TELNEXT_API_KEY
})

// detect SIM swap before authorizing transaction
const risk = await client.simSwap.check({
  phoneNumber: '+5511999990000',
})

if (risk.swappedInLast24h) {
  blockTransaction()
}

// → { swapped: true, hoursAgo: 3, carrier: 'Vivo' }

how it works

Silent verification, every request

Every request runs through GSMA Open Gateway certified CPaaS providers with direct tier-1 carrier access — routed automatically by Telnext in under 200ms, with no user friction.

Your App
login or transaction
Telnext API
single endpoint
Tier-1 CPaaS
GSMA certifiedCAMARA readyauto-failover
Verified Response
in under 200ms
Automatic failover — zero config required

security APIs

Three APIs. Every threat vector.

All carrier-grade. No OTP. No telco contracts. Same payload, every provider.

live

Number Verification

Eliminates OTP for login and transaction confirmation.

Silently confirms the phone number matches the device making the request — using carrier data, not SMS.

Loginpassword recoverytransaction auth
POST /v1/number/verify
live

SIM Swap Detection

Stops account takeover before the fraudster receives an OTP.

Returns the date of last SIM change. Block the transaction if a swap happened in the last 24h.

High-value transfersaccount recoverynew device login
POST /v1/sim-swap/check
live

Device Location

Flags impossible travel and out-of-area transactions in real time.

Verifies the device is within a defined radius using network positioning — no GPS required.

Geo-fencingstep-up authanomaly detection
POST /v1/location/verify
soon

Roaming Status

Flags impossible travel and cross-border fraud before a transaction clears.

Returns whether the device is currently roaming and in which country — using live network data, no GPS required.

Impossible travelcross-border fraudhigh-risk market blocks
POST /v1/roaming/status
soon

KYC Match

Carrier-verified identity match — no document uploads, no manual review queues.

Checks that subscriber name and date of birth on file with the carrier match what the user provided during onboarding.

Account openingKYC complianceidentity step-up
POST /v1/kyc/match
soon

Silent Authentication

Authenticate users in the background — zero OTP, zero user friction.

Creates a secure challenge URL and verifies the device responds over the correct carrier data session — invisible to the user.

Passive loginsession continuitystep-up auth
POST /v1/auth/silent
soon
Quality on Demandsoon
Device Statussoon
Network-based OTPsoon
Carrier Billingsoon

carrier coverage

Where we route

Live routing across major carriers. Coverage expanding every month as new operators join the CAMARA Open Gateway program.

🇧🇷

Brazil

Vivo · Claro · TIM

full coverage
🇲🇽

Mexico

Telcel · AT&T MX

partial
🇦🇷

Argentina

Personal · Claro

partial
🇩🇪

Germany

DT · Vodafone · O2

full coverage
🇪🇸

Spain

Telefónica · Orange

partial
🇨🇴

Colombia

no carriers yet

coming soon
full coverage
partial
coming soon

live sandbox

Try it without a key

Run a real request against our sandbox environment. No account needed. Mock responses mirror production shape exactly.

POST/v1/location/verify
latitude -23.5505 longitude -46.6333 radius 300
response

Run a request to see the response

getting started

From zero to production

No contracts. No approval queues. No custom SDKs per carrier.

01

create account

Sandbox credentials immediately, no approval needed.

02

explore sandbox

Full mock responses for all APIs, test every edge case.

03

check coverage

Real-time carrier availability by country and API.

04

ship to production

Swap sandbox key for live key, zero refactoring.

infrastructure

Built on providers your security team already trusts.

Telnext routes every API call through GSMA Open Gateway certified CPaaS providers, each with direct tier-1 carrier relationships, CAMARA-compliant APIs and proven uptime. You get carrier-grade identity signals without managing a single carrier contract.

GSMA Open Gateway certified partners
GSMA Open Gateway certified
CAMARA API compliant
LATAM coverage: BR · MX · AR
Automatic failover

LGPD compliant

All carrier data access follows Brazilian data protection law.

No data retention

Telnext does not store phone numbers or location data. Query in, result out.

Audit trail

Every API call logged with trace_id and timestamp. Exportable for compliance review.

Sandbox isolation

Test environment fully isolated from production.

pricing

Simple, transparent pricing

Start free. Pay for what you use. Scale without surprises.

Sandbox

free· forever

no card needed

No credit card needed. Start building immediately.

  • All APIs with mock responses
  • 1,000 calls / month
  • Full docs access
  • No live carrier data
start free
most popular

Pay as you go

$0.004· per API call

billed monthly

Billed monthly. Full access to live carrier data.

  • All live APIs
  • Real carrier data
  • Cost preview per call
  • Usage dashboard
  • Cost preview before every API call. No surprises.
get api key

Volume

custom· 1M+ calls / month

Discounted rates, SLA guarantees, and dedicated support.

  • Discounted rates
  • SLA guarantee
  • Dedicated support
  • Zapier · Salesforce connectors
talk to us

early access

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Built for banks and fintechs in LATAM.
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