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VERIFY CALL · HOW IT WORKS

Verification in 2 seconds. No code to type, no SMS to intercept.

Verify Call routes a voice call through real carrier infrastructure. Your app reads the caller ID. Done.

Average 2.1s · 190+ countries · 0 typed digits
✓

Call initiated · 1.2s

+1 (415) 555-2671

POST /connect-hub/call/flashLIVE
// flash call verification · Node.js
const res = await fetch('https://api.novauth.com/…/call/flash', {
method: 'POST',
headers: { 'x-api-key': 'sk_•••' },
body: JSON.stringify({
callee: '+14155552671',
}),
});
// ← { uuid: "01J…", status: "initiated" }
20101JXVC1A2B…+1 415 555 26711284 ms
20101JXVC3C4D…+44 7700 900812920 ms
20101JXVC5E6F…+33 6 12 34 56 781103 ms
CDR

caller ID matched · verified

Speed is the product

Median time to verified, by method. Every extra second is a user who gave up.

Novauth Verify Call
Other methods
High drop-off risk

The verification flow

From phone number entry to verified — in under 3 seconds.

Live trace · loop
1
USER
T+0 ms

Phone entry

Enters number in your app or web form

2
YOUR BACKEND
T+50 ms

API request

POST /v1/call/flash · phone + correlation_id

3
NOVAUTH
T+120 ms

Route selection

Picks optimal carrier by destination prefix

4
CARRIER · PSTN
T+300 ms

Flash call

Voice call placed over carrier infrastructure

5
USER'S PHONE
T+1.4 s

Rings once

Caller ID = verification code · auto-hangs up

6
VERIFIED
T+2.1 s

Auth complete

App reads caller ID — zero digits typed

2.1 sAverage time
0Digits typed
190+Countries
NoneSIM swap risk

Verify Call vs SMS vs SNA

Every verification method compared on the metrics that matter.

Feature
Verify Call
SMS OTP
Silent Network Auth
User action
None (Android) / See number (iOS)
Type 6 digits
None
Speed
2–3 seconds
5–30 seconds
1–4 seconds
Security
No code to intercept
⚠️SIM swap vulnerable
SIM-based crypto
Cost
40–60% cheaper than SMS
Baseline
Carrier-dependent
Coverage
190+ countries
230+ countries
9–15 countries
AIT fraud risk
None
⚠️High ($1.6B/year)
None

Built for high-risk environments

Every design decision optimized to eliminate attack vectors.

No OTP to intercept

The verification number is never transmitted as data. It lives only as a caller ID in carrier infrastructure — invisible to SS7 sniffers, SIM swap attacks, and phishing.

Bypasses AIT fraud entirely

SMS-based AIT (Artificially Inflated Traffic) costs the industry $1.6B/year. Verify Call doesn't route through SMS concentrators — the attack surface doesn't exist.

Direct carrier routing

No third-party SMS aggregators in the path. Your verification request goes Novauth → carrier → handset. Fewer hops = fewer attack vectors.

Full CDR visibility

Every call attempt logged with carrier, duration, and outcome. You see exactly what happened — no black boxes.

Add Verify Call to your app in 2 days

Full API docs, SDKs, and test environment included.

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