International Virtual Phone Numbers & AI Voice Agents for Modern Business
- Flat-rate inbound, no per-minute fees
- 100+ countries, 5,000+ cities
- Scalable to 1,000 channels
- 24/7/365 support
Years delivering reliable VoIP (since 2008)
Countries with local virtual numbers (DIDs)
Languages for your AI voice agents
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 channels. Explore Inbound →
Discount Outbound Calling
From $0.006/min with 6-second billing and Local-Direct routing to 45+ countries — crystal-clear quality. See Outbound Rates →
AI Voice Agents
Custom AI receptionists that answer, route calls, take payments, schedule meetings, and speak 32 languages. Build Your AI Agent →
Scalable SIP Trunks
Carrier-grade SIP trunking with AnyCast DNS, custom sub-domains, IP authentication, and massive capacity. See SIP Trunking →
Text-to-Email SMS
Receive SMS and 2FA security codes directly to email — anywhere in the world, no roaming fees. Learn About SMS →
White-Label Video
Fully branded video conferencing — your logo, domain, and colors. Hosted or on-premise deployment. See Video Options →
Free Number Portability
Keep your existing numbers. Local Number Portability is free and zero-downtime in most regions. Port Your Number →
Softphones & Cloud PBX
Free pre-configured softphones, plus a full Cloud PBX with auto-attendant, call queues, and voicemail-to-email. 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. Your custom agent answers natural speech, gives product information, schedules meetings, collects payments, and routes calls to the right department.
- Natural-sounding voices — or clone your own
- Custom workflows built around your business
- Handles sales, support, after-hours & billing
- Deploys to phone, website, email, or chat
- Typical revisions delivered in hours, not weeks
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.
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
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 deliverability
- Secure Dashboard with full CDRs
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
Pricing shown is representative. Exact rates vary by city, number type, and configuration. Contact a VoIP specialist for a tailored quote.
Get Started in Minutes
From signup to global calling in 3 simple steps
Select local, mobile, national, or toll-free virtual numbers from 100+ countries and 5,000+ cities.
Connect via softphone, SIP trunk, PSTN forward, or deliver SMS and 2FA codes straight to email.
Receive calls and messages worldwide. Add AI agents, scale channels, or port 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.
Call & Contact Centers
Scale to 1,000 channels per DID, flat-rate inbound pricing, and premium outbound routes that deliver.
Remote & Hybrid Teams
White-label video meetings, SIP softphones, and unified communications — your whole team connected.
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 integration with any SIP-compatible PBX.
Common Questions
VoIP & virtual number FAQs
Everything you need to know about virtual numbers, pricing, porting, and AI agents.
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.
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. Asia-Pacific numbers start at $7.25/month.
Yes. CallnFax Text-to-Email service delivers incoming SMS — including two-factor authentication codes — directly to your email address. Ideal for digital nomads and remote workers who need to stay connected without roaming fees.
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 campaigns or peak contact center volume — all at flat-rate pricing.
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.
CallnFax has delivered VoIP since 2008 with a focus on flat-rate inbound service, 6-second outbound billing, Local-Direct routing to 45+ countries, custom AI voice agents, and white-label video — packaged together rather than priced as enterprise add-ons.
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.
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.
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