Menu
Docs
Get Started →
Wholesale VoIP & SMS

A reliable wholesale VoIP & SMS provider — not a reseller of someone else's routes.

We run our own switch and buy directly from a vetted vendor pool. Least-cost routing, prepaid wallet billing, real-time CDRs, and Fraud Watch built into every account — see live rates and get started free.

190+
Voice Destinations
0
Minimum Commitment
24/7
Fraud Watch

Least-cost routing

Every call is matched against our full vendor pool in real time — you get the best available rate on the destination, not a single fixed carrier.

Prepaid wallet billing

Top up and go — no invoicing delays, no surprise bills. Traffic simply stops if the wallet runs dry, so you're never exposed past what you've funded.

Fraud protection built in

Fraud Watch monitors for toll fraud and abnormal SMS patterns on your account automatically — not an add-on you have to configure yourself.

A real portal, not a spreadsheet

Live CDRs, SMS logs, a route test tool, and carrier lookup — the same tools our own team uses to run the network, not a stripped-down customer view.

How it works

01

Register

Create a free wholesale account — no cost, no commitment to sign up.

02

Get approved

Quick verification, typically same-day, so you're not stuck waiting on a sales cycle.

03

Fund your wallet

Top up prepaid — pay for what you use, nothing more.

04

Start routing

Point a SIP trunk or dedicated IP at us for voice, or connect via SMPP/API for SMS — traffic flows immediately.

Wholesale VoIP

Least-cost routing across our own vendor pool, worldwide.

We run our own switch and buy directly from a vetted vendor pool — not a reseller of someone else's routes. Prepaid wallet billing, real-time CDRs, and automatic failover if a route degrades.

Least-cost routing

Automatic lowest-cost path across the full vendor pool for every destination, re-evaluated continuously.

Prepaid, no minimum

Fund your wallet and go — no contract, no monthly minimum commitment.

Real-time CDRs

Every call logged the moment it completes — duration, cost, and route, queryable immediately.

Wholesale SMS

SMPP or a simple API — real delivery receipts either way.

Connect via SMPP for high-volume sending or a plain REST API for a simpler integration — same underlying vendor pool, same real-time delivery receipts, same prepaid billing.

SMPP or API

Bind via SMPP for volume, or POST to our REST API — pick whichever fits your stack.

Real delivery receipts

Know definitively whether a message reached the handset, not just that it left our network.

Sender ID management

Register and manage sender IDs across 221+ destinations from one account.

A2P Messaging

OTPs, alerts, and campaigns your software sends to real customers.

Application-to-Person messaging is a different job from general SMS — registered sender IDs, automatic opt-out handling, and SMS Fraud Watch built into every account.

Sender ID registration

Register your alphanumeric sender ID once, with per-country overrides where required.

Automatic opt-out

A reply of STOP or UNSUBSCRIBE suppresses that number instantly — real compliance infrastructure.

Built for OTP & alerts

Flat per-verification pricing by country, plus transactional alerts and campaigns on the same account.

AI Call Assistant

An AI that answers your phone and never forgets what was said.

Route a number to it and it takes real calls — after hours or all the time. Full turn-by-turn transcripts, your own schedule, and consent-gated outbound callbacks.

Your own knowledge base

Tell it your hours, pricing, and policies — that's the entirety of what it knows.

Schedule control

Always-on, or only outside your set business hours, in your own timezone.

Full call transcripts

Every AI-handled call logged turn by turn — a real record, no audio kept.

6X API

One API key. Verification, lookup, fraud checks, SMS, and webhooks.

Connect your CRM, mobile app, or backend directly to 6X — included free with an approved wholesale account, no separate subscription.

Verify, lookup, fraud check

Phone verification by SMS or voice, free number lookup, and free toll-fraud checks — all in one API.

Real-time webhooks

SMS delivery, inbound messages, and verification events pushed to your server, HMAC-signed.

No platform fee

Free with an approved wholesale account — you only pay for verifications and SMS actually sent.

Carrier Lookup

Free tool: check which network any number is really on.

228 countries, real MCC/MNC operator data, no login required — the same lookup that backs 6X's own routing and the Number Lookup API.

228 countries

Real prefix and operator data across virtually every country with mobile coverage.

Real operator data

Shows the actual carriers on file for a number's MCC/MNC range, not a generic guess.

Free, no login

No account or API key needed for normal human use — try it right now.

Phone Numbers

A local number in almost any country.

245 countries priced today, sourced on demand from our DID vendor partner — prepaid wallet billing, no long-term contract, route it anywhere a normal inbound number goes.

245 countries priced

Every country has a real, quoted monthly price today - not just a handful of major markets.

Route it your way

Extension, ring group, internal IVR, or straight to the AI Call Assistant.

No long-term contract

A monthly line item on your wallet - cancel anytime.

Fraud & Toll Check

Know if a number is high-risk before you dial or text it.

Check any number against a real toll-fraud watchlist — the same data 6X's own internal Fraud Watch uses to protect every wholesale account.

Same watchlist as Fraud Watch

Not a lesser dataset - the exact high-risk prefix table used internally on every account.

Real-time, stateless

Check any number instantly - a pure destination lookup, no account history needed.

Free, no login

Zero marginal cost to serve, so it's free to try here and free via the API.

Webhooks

Real-time events pushed to your server — no polling.

Subscribe to inbound SMS, verification results, and staff events, and 6X pushes each one to your endpoint the moment it happens — HMAC-signed so you can verify it's genuine.

No polling required

Events are pushed the moment they happen - stop repeatedly checking an API for something that hasn't changed.

HMAC-signed

Every payload carries an X-6X-Signature header so your endpoint can verify it's genuine.

Real delivery logs

See every delivery attempt and its response status in your Wholesale Portal.

Scheduled SMS

Send this message later — not right now.

Queue an SMS to go out at a specific future time or date — appointment reminders, drip campaigns, delayed notifications. One extra field on the same send request, billed only when it actually sends.

One extra field

No separate scheduling system - just add send_at to the SMS send request you already use.

Billed at send time

Nothing is charged when you schedule a message - only when it actually goes out.

Cancel anytime

List every pending scheduled message and cancel any of them before their send time.

6X Softswitch

The same routing engine 6X's own traffic runs on.

White-label voice & SMS termination — your own dedicated IP, your own vendor relationships, flat monthly rent instead of a revenue share. Hosted centrally, or self-hosted on your own server for less.

Not a reseller layer

Softswitch isn't bolted onto someone else's infrastructure — it's the same engine 6X's own traffic runs on.

Nothing locked behind approval

Dedicated IP, your own vendor relationships, flat monthly rent — you own the relationship with your customers.

Self-hosted, if you want it

Run the same switch on your own server for less, with billing and branding still managed centrally.

6X Route Inspector

Independently audit any vendor route — even one outside 6X.

Connect your own switch or SMSC to 6X purely for testing, and get real FAS detection, CLI verification, and a shareable 0-100 route score — 6X never needs to know who your vendor is.

FAS testing, zero numbers

Check for False Answer Supervision on any route instantly, using a number regulators reserve for fictional use — no destination DID to buy.

Recurring monitoring

Schedule a route to retest itself daily or weekly, with an automatic alert the moment it degrades.

Evidence, not just a number

A shareable PDF-ready report for every test — proof for a vendor dispute, or marketing proof for your own customers.

Network Test

Free tool: check your own connection's real call-quality potential.

Ping, jitter, and throughput against 6X's own servers, fed into the ITU-T E-model — the same published formula telecom engineers use to predict voice call quality. No login required.

Real, timed measurements

Ping, jitter, and download/upload throughput measured live against 6X's own infrastructure, not a generic speed test.

Industry-standard scoring

Fed into the ITU-T E-model, the same formula real telecom engineers use to predict voice quality from network conditions.

Free, no login

The same test built into the 6X Softphone's own Network Test tab, without needing to log in first.

Who uses wholesale termination from 6X

Call centers & BPOs SMS marketing & OTP platforms Other switches & PBX operators VoIP resellers Businesses running their own dialer

Frequently asked questions

Retail is usage through the portal — dialing via an assigned extension or sending SMS from the dashboard. Wholesale is direct IP-to-IP voice trunking or SMPP for SMS. Both bill from the same prepaid wallet on one account.

No — wholesale accounts are prepaid with no long-term contract and no monthly minimum. Fund your wallet and route as much or as little as you need.

Verification is typically same-day — register free, get approved, top up your wallet, and start routing.

See 6X Softswitch — your own dedicated IP and isolated vendor connections, flat monthly rent instead of per-minute billing, hosted centrally or self-hosted on your own server.

Yes — 6X Route Inspector independently audits FAS, CLI integrity, and audio quality on any vendor's route, even one outside 6X, with a shareable report as evidence.

Yes — the 6X Reseller Program lets you resell wholesale voice and SMS under your own brand, commission-based, with no infrastructure to run yourself.

Self-service tools (real-time CDRs, rate visibility, Fraud Watch) plus direct sales/support contact for anything that needs a real conversation.

Ready to start routing?

See live rates for your destinations, or sign up free and get your wholesale account today.

Dig deeper into each product

Wholesale VoIP →

Least-cost routing, SIP trunks, voice broadcast, and dialer campaigns — the full voice termination product.

Wholesale SMS →

SMPP or API sending, delivery receipts, and sender ID management for general SMS traffic.

A2P Messaging →

OTP, transactional alerts, and marketing campaigns — sender registration and compliance built in.

6X API →

Verify, lookup, fraud check, SMS sending, and webhooks — free with an approved account.

AI Call Assistant →

An AI that answers calls with your own knowledge base, logs full transcripts, and can call back on your behalf.

Carrier Lookup →

Free, no-login tool to check which network a number is on across 228 countries — the same lookup our API uses.

Phone Numbers →

Get a local DID sourced on demand across 245 countries — prepaid wallet billing, no long-term contract.

Fraud & Toll Check →

Free tool to check a number against our high-risk watchlist before you call or text it — the same data Fraud Watch uses internally.

Webhooks →

Real-time, HMAC-signed event notifications for inbound SMS, verification results, and staff events — no polling required.

Scheduled SMS →

Queue a message to send at a future time — one extra field, billed only when it actually sends.

6X Softswitch →

Your own dedicated IP and isolated vendor pool, flat monthly rent — hosted centrally or self-hosted on your own server.

Route Inspector →

Independently audit FAS, CLI, and audio quality on any vendor route — even one outside 6X, even without a destination number.

Network Test →

Free ping/jitter/throughput test against 6X's own servers, scored with the same E-model formula telecom engineers use.

Chat with us