CallnFax Connectivity for a Digital Age
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Trusted Global VoIP • Since 2008

International Virtual Phone Numbers & AI Voice Agents for Modern Business

Flat-rate virtual numbers in 100+ countries, discount outbound calling at $0.006/min, white-labelled video meetings, and AI voice agents that answer in 32 languages — all from one reliable VoIP provider.

Get Started Free Search Virtual Numbers
Flat-rate inbound, no per-minute fees
100+ countries, 5,000+ cities
Scalable to 1,000 simultaneous channels
24/7/365 support
17+
Years delivering reliable VoIP
(Since 2008)
100+
Countries with local
virtual numbers (DIDs)
32
Languages for your
AI voice agents
6-sec
Billing increments on
outbound calls
Our Solutions

Everything your business needs for global voice, text, and video

A complete, scalable cloud communications platform — built for call centers, global enterprises, remote teams, and digital nomads.

Inbound Virtual Numbers

Flat-rate local, national, mobile & toll-free DIDs from 100+ countries. Zero per-minute charges, up to 1,000 scalable channels.

Explore Inbound →

Discount Outbound Calling

From $0.006/min with 6-second billing and Local-Direct routing to 45+ countries — crystal-clear quality, verified Caller ID, minimal latency.

See Outbound Rates →

AI Voice Agents

Custom AI receptionists that answer, route calls, take payments, schedule meetings, and speak naturally in 32 languages, 24/7/365.

Build Your AI Agent →

Scalable SIP Trunks

Carrier-grade SIP trunking with AnyCast DNS, custom sub-domains, IP authentication, and massive channel capacity for contact centers.

See SIP Trunking →

Text-to-Email SMS

Receive SMS and 2FA security codes directly to email — anywhere in the world, no roaming fees. Built for digital nomads & remote teams.

Learn About SMS →

White-Label Video Meetings

Fully branded video conferencing — your logo, domain, and colors. Available as hosted or on-premise deployment for total control.

See Video Options →

Free Number Portability

Keep your existing phone numbers. Local Number Portability is free and zero-downtime in most regions — switch without losing a single call.

Port Your Number →

Softphones & Cloud PBX

Free pre-configured softphones, plus a full Cloud PBX with auto-attendant, call queues, ring groups, voicemail-to-email, and more.

Get Softphone →
AI Voice Agents

Never miss another call. Answer in 32 languages — 24/7.

CallnFax AI Voice Agents deliver a quantum leap beyond traditional IVRs and auto-attendants. Your custom agent answers natural speech, gives detailed product information, schedules meetings, collects payments, and routes calls to the right department.

  • Natural-sounding voices — or clone your own voice
  • Custom workflows built around your business
  • Handles sales, support, after-hours, billing & more
  • Deploys to phone, website, email, or chat widget
  • Typical revisions delivered in hours, not weeks
Calculate Your AI Savings
🇺🇸 English
🇪🇸 Español
🇫🇷 Français
🇩🇪 Deutsch
🇮🇹 Italiano
🇵🇹 Português
🇯🇵 日本語
🇨🇳 中文
🇰🇷 한국어
🇸🇦 العربية
🇮🇳 हिन्दी
🇳🇱 Nederlands
🇷🇺 Русский
🇵🇱 Polski
🇹🇷 Türkçe
+17 more
Serving customers in their native language, worldwide
Simple, Transparent Pricing

Flat-rate DIDs & low-cost global outbound calling

No hidden fees. No surprise overage. Just clear, predictable costs designed for businesses that scale.

Virtual Numbers — Tier 1

$6.15 / mo
Canada, UK, USA, Germany, France, Spain
  • Unlimited inbound minutes (flat-rate)
  • 2 simultaneous channels standard
  • Scalable up to 1,000 channels
  • Free Cloud PBX with 10 SIP users
  • Local Number Portability included
Browse Numbers
Most Popular

Outbound Call Termination

$0.006 / min
USA, Canada, Mexico — under 1¢/min
  • 6-second billing increments
  • Local-Direct routing to 45+ countries
  • Premium routes — crystal-clear quality
  • Verified Caller ID for high deliverability
  • Secure Dashboard with full CDRs
See All Rates

Virtual Numbers — Tier 2

$7.25 / mo
Australia, China, Japan & Asia-Pacific
  • Unlimited inbound minutes (flat-rate)
  • Asia-Pacific reach for global business
  • SMS Text-to-Email in select regions
  • SIP, softphone & PSTN forwarding
  • 24/7/365 support included
Request a Quote

Pricing shown is representative. Exact rates vary by city, number type, and configuration. Contact a VoIP specialist for a tailored quote.

Why Switch to CallnFax

See how we stack up against the big names in VoIP

We built CallnFax for businesses tired of paying per-minute premiums and chasing down surprise charges.

Feature CallnFax Typical Provider A Typical Provider B
Flat-rate inbound numbers (no per-minute fees) ✓ ✗ ✗
Outbound starting rate $0.006/min $0.013/min+ $0.022/min+
Billing increments 6 seconds 60 seconds 60 seconds
Scalable to 1,000 channels per DID ✓ Limited Limited
Custom AI voice agents (32 languages) ✓ Add-on only Add-on only
White-label video meetings ✓ ✗ Enterprise only
Free Local Number Portability ✓ Paid Paid
Years in business 17+ (since 2008) Varies Varies
Get Started in Minutes

From signup to global calling in 3 simple steps

No hardware, no SIM cards, no technical overhead. Just the internet and your existing devices.

01

Choose your country & number

Select local, mobile, national, or toll-free virtual numbers from 100+ countries and 5,000+ cities.

02

Configure voice, SIP & SMS

Connect via softphone, SIP trunk, PSTN forward, or deliver SMS and 2FA codes straight to email.

03

Launch & scale globally

Receive calls and messages worldwide. Add AI agents, scale channels, or port existing numbers — anytime.

Built For Your Business

Who chooses CallnFax?

Digital Nomads

Keep your home number, receive 2FA codes anywhere, and enjoy low-cost global calls — zero roaming fees.

Global Enterprises

Establish a local presence in any market with virtual numbers from 100+ countries — no physical office needed.

Call & Contact Centers

Scale to 1,000 channels per DID, flat-rate pricing on inbound, and premium outbound routes that deliver.

Remote & Hybrid Teams

White-label video meetings, SIP softphones, and unified communications — your whole team connected worldwide.

Small & Mid-Size Business

Punch above your weight with AI receptionists, toll-free numbers, and enterprise-grade call routing.

Developers & ITSPs

Scalable SIP trunks with AnyCast DNS, IP authentication, and straightforward integration with any SIP-compatible PBX.

Common Questions

VoIP & virtual number FAQs

What is a virtual phone number and how does it work? +
A virtual phone number (DID) is a phone number hosted in the cloud — not tied to a physical SIM or landline. With CallnFax, you can choose a number in almost any country and receive calls on your mobile, desktop softphone, SIP PBX, or forward to any other number. Perfect for establishing a local presence without a local office.
How much does a virtual number from CallnFax cost? +
Flat-rate virtual numbers start at just $6.15/month for top-tier markets like the USA, UK, Canada, Germany, France, and Spain. There are no per-minute fees on inbound calls — if you receive one thousand or one million minutes, your price stays the same. Asia-Pacific numbers start at $7.25/month.
Can I receive SMS and 2FA codes with my virtual number? +
Yes. CallnFax Text-to-Email service delivers incoming SMS — including two-factor authentication codes — directly to your email address. Ideal for digital nomads, remote workers, and anyone who needs to stay connected to critical services without roaming fees.
How many simultaneous calls (channels) do I get? +
Local, national, and mobile DIDs include 2 channels by default. Toll-free numbers include 300 channels standard. Most numbers can scale up to 1,000 simultaneous channels for sales events, campaigns, or peak contact center volume — all at flat-rate pricing.
Can I port my existing phone number to CallnFax? +
Yes — and in most regions, Local Number Portability is completely free with zero downtime. Our porting team handles the carrier paperwork, tests the switchover, and ensures you don't lose a single call during the transition.
How is CallnFax different from Twilio, RingCentral, or DIDWW? +
CallnFax has delivered VoIP since 2008 with a focus on flat-rate, flat-fee inbound service (no per-minute charges), 6-second outbound billing, Local-Direct routing to 45+ countries, custom AI voice agents, and white-label video meetings — packaged together rather than priced as enterprise add-ons. Our pricing is transparent, our support is 24/7, and our platform is built for businesses that want predictable costs at scale.
Do I need special hardware for CallnFax? +
No — you already have what you need. Use your mobile, computer, tablet, or existing IP phone. We provide a free pre-configured softphone, and you can connect via SIP trunk to any compatible PBX. For advanced deployments, our AnyCast DNS and custom SIP sub-domains provide enterprise-grade reliability.

Ready to upgrade your business communications?

Talk to a VoIP specialist and get a custom quote for virtual numbers, outbound calling, AI agents, or SIP trunking — built around your business.

Talk to a VoIP Specialist Create Free Account

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Contact Info

  • 1 Concorde Gate #702 North York, ON M3C 3N6 Canada
  • +19732724796
  • +44 203 7695362