Carrier-grade OTP delivery via SMS — reaching 190+ countries across direct routes, with intelligent fallback routing that maximises delivery in every region.
Direct carrier connections, intelligent routing, and automatic failover — built for organisations where authentication failure is not an option.
Narvark connects directly to tier-1 carriers in 60+ markets — bypassing aggregators that add latency, cost, and failure points.
If a route fails, Narvark automatically retries via the next best carrier — in milliseconds, invisibly, without your team touching anything.
Use your own Android devices as local SMS gateways via OTP Esgasy — dramatically reducing per-OTP cost for high-volume domestic deployments.
Reach every phone on Earth. Narvark maintains active routes to 190+ countries with local number formatting, MSISDN validation, and country-specific compliance.
Every number is validated against HLR lookups before dispatch. Stop wasting OTP credits on disconnected numbers, VoIP lines, and invalid formats.
Narvark's SMS infrastructure scales to 72,000 authentications per second at peak. Handle flash sales, login spikes, and mass notifications without throttling.
Real-time SIM swap detection via carrier lookup. Flag high-risk authentications before sending the OTP — not after the attacker has already moved.
Per-message delivery receipts, carrier-level status codes, latency tracking, and conversion funnels — all accessible via dashboard and API.
Send thousands of OTPs simultaneously via the batch API — ideal for account migrations, password resets, and large-scale re-verification campaigns.
Narvark's routing engine evaluates carrier latency, delivery rates, and cost in real time — selecting the optimal path for every single OTP, on every send.
When routes fail, the engine fails over automatically. No manual configuration. No alerts. Just delivery.
Request Demo →Regional infrastructure across every major market ensures your OTPs arrive fast — regardless of where your users are. Narvark handles country-specific formatting, regulations, and routing automatically.
Talk to our team about global SMS OTP delivery, routing strategy, and enterprise authentication requirements.