InPhonex
InPhonex is a privately held Miami-based VoIP service provider founded in 2003, offering residential, SMB, and wholesale SIP-based voice services, international DIDs, SIP trunking, and a white-label reseller platform (VarPhonex) across 30+ countries.
- Company typePrivate
- Founded2003
- HeadquartersMiami, United States
- Headcount11–50
- GTM typeB2B and B2C
- OfferingServices
What InPhonex does
InPhonex is a privately held VoIP service provider founded in 2003 and headquartered in Miami, Florida, offering residential, small-business, and wholesale voice services over SIP-based infrastructure. Its core technology is a SIP-based VoIP platform with cloud-based PBX functionality, supporting SIP termination, SIP trunking, and international virtual number (DID) services. The platform interoperates with a broad ecosystem of IP phones, ATAs, and softphones (Grandstream, Cisco, Linksys, Sipura), as well as open-source PBX systems such as Asterisk and Trixbox, with extensive configuration documentation serving as a key acquisition channel.
The company's product portfolio spans consumer calling plans (World Unlimited, LiteLine, Basic 500, US/Canada Unlimited) priced from $7.95 to $23.95/month, business plans (Business Unlimited at $49.95/month, Business Toll Free Unlimited at $54.95/month), high-volume bulk plans for call shops and telemarketers starting at $89.95/month, and enterprise-grade SIP termination and SIP trunking services. It also operates the VarPhonex private-label reseller platform, allowing partners to white-label VoIP services under their own brand with billing tools and CDRs.
Revenue is generated through subscription plans, prepaid call credit (usage-based), hardware sales (IP phones and ATAs), SIP trunking and termination for carriers, international DID number surcharges, toll-free number subscriptions, and reseller/licensing fees from VarPhonex. The go-to-market is predominantly direct-to-consumer via the inphonex.com website with self-service sign-up, supplemented by an affiliate program and the VarPhonex channel. The company targets six primary customer segments: residential consumers (especially expatriates and international callers), small and medium businesses, call shops and cyber cafes, telemarketing firms, Asterisk/Trixbox technical users, and VoIP resellers/entrepreneurs.
InPhonex firmographics
Firmographics- Name
- InPhonex
- Legal name
- InPhonex
- Website
- https://inphonex.com
- Company type
- Private
- Founded year
- 2003
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- InPhonex is a privately held Miami-based VoIP service provider founded in 2003, offering residential, SMB, and wholesale SIP-based voice services, international DIDs, SIP trunking, and a white-label reseller platform (VarPhonex) across 30+ countries.
- Ownership category
- akta.pro rank
InPhonex industry classification
Industry- Product category
- VoIP Telecommunications
- NAICS
- Telecommunications (517), All Other Telecommunications (517810)
- SIC
- Telephone Communications (No Radiotelephone) (4813), Services-Telephone Interconnect Systems (7385)
- akta.pro primary industry
- VoIP Access & ITSP Services (HDAIAHAD)
- akta.pro secondary industry
- Cloud PBX & Hosted Telephony (HDAIAHAB)
Keywords
Where InPhonex is headquartered
LocationHeadquarters
- HQ city
- Miami
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
InPhonex business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Infrastructure, Technology or R&D, Personnel, Operations, Marketing or Sales
Revenue model
- Subscription Plans: Monthly, quarterly, and annual subscription plans for residential and business VoIP service including unlimited calling plans and prepaid options
- Prepaid Call Credit: Pay-as-you-go calling credit for users who prefer usage-based pricing without monthly commitments
- Hardware Sales: Sale of IP phones, Analog Telephone Adapters (ATAs), and other VoIP equipment including Grandstream, Cisco, Linksys devices
- SIP Trunking and Termination: Wholesale SIP termination and trunking services for carriers, resellers, and large businesses requiring high-volume voice services
- Private Label/Reseller Program: VarPhonex white-label VoIP platform allowing entrepreneurs and businesses to resell VoIP services under their own brand name
- International DID Numbers: Sale of international virtual phone numbers with monthly surcharges depending on location
- Toll-Free Numbers: Monthly subscription and per-minute charges for US/Canada/UK toll-free numbers
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | World Unlimited - Unlimited calling to US, Canada, and 66 countries |
| Subscription | Monthly | LiteLine - One number to ring all phones with Pay As You Go |
| Subscription | Monthly | Ultimate US/Canada Unlimited with DID |
| Subscription | Monthly | Business Unlimited - Unlimited US/Canada calling for business |
| Subscription | Monthly | Basic 500 - 500 minutes local/long distance |
| Subscription | Monthly | Business Toll Free Unlimited |
| Subscription | Monthly | Toll-Free Number Add-on |
| Subscription | Monthly | Business Bulk Plans - High-volume minute packages |
| One time/ perpetual license | Pay-as-you-go | Hardware - IP Phones and ATAs |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels5 records
InPhonex product offering
Product offeringCore offering
InPhonex is a VoIP service provider delivering residential and business phone service over SIP, including unlimited calling plans, international DID virtual numbers, SIP termination and trunking, toll-free numbers, and a white-label reseller platform (VarPhonex). It supports bring-your-own-device hardware (IP phones/ATAs), Asterisk/Trixbox open-source PBX integration, and provides downloadable softphone software.
Product overview
InPhonex is a VoIP service provider offering residential and business phone services. The core product portfolio includes multiple calling plans: World Unlimited (unlimited US/Canada plus 66 countries), LiteLine (pay-as-you-go with one ring-all number), Basic 500 (prepaid minutes), US/Canada Unlimited, and Business Unlimited plans. Add-on services include toll-free numbers, international virtual DID numbers, and local access numbers. Enterprise offerings encompass SIP Termination and SIP Trunking services for carriers and businesses, plus the VarPhonex private-label reseller platform. The service supports Asterisk/Trixbox PBX integration and offers downloadable softphones. Business Bulk Plans cater to high-volume users like call shops and telemarketers.
Differentiator
Problem solved
Functional benefit
Brands
- VarPhonex: Private label VoIP platform for resellers to brand voice over Internet services under their own name.
Quantifiable outcome
- Unlimited calling to US, Canada, and 66 countries for $23.95/month
- +1 more outcomes
Companies that use InPhonex
Customer profileNamed customers4 records
Segments6 records
Ideal customer profiles6 records
InPhonex technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
InPhonex partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- VarPhonexcoreVarPhonex is InPhonex's private label VoIP platform and reseller program, allowing entrepreneurs and businesses to resell voice over Internet (VoIP) services under their own brand name. It provides white-label VoIP infrastructure including billing systems, CDRs, and the ability to set custom markup rates on wholesale services.
Scale indicators3 records
Recent moves5 records
Expansion highlights4 records
InPhonex competitors and assessment
Company assessmentBroad incumbents
- Vonage: Major consumer and business VoIP/UCaaS provider offering cloud phone systems, SIP trunking, and international numbers globally — directly overlapping InPhonex's residential, business, and SIP trunking offerings, but at vastly larger scale and brand recognition.
- RingCentral: Leading cloud UCaaS provider for SMBs and enterprises with global availability, hosted PBX, and SIP trunking — competes head-on with InPhonex's business phone, cloud PBX, and international number offerings, and bundles broader collaboration features.
- 8x8: Public cloud communications provider offering business VoIP, contact center, and international numbers — direct competitor in cloud PBX and SIP services with similar SMB and mid-market targeting as InPhonex.
- Nextiva: Cloud business phone system provider for SMBs with SIP trunking and toll-free services — competes with InPhonex's US/Canada Unlimited, Business Unlimited, and Toll-Free plans for the same SMB buyer.
- Twilio: Cloud communications platform offering programmable voice, SIP trunking, and phone numbers via APIs — competes with InPhonex's SIP trunking and wholesale termination products while serving a developer/enterprise customer base.
Direct peers
- Ooma: Consumer and small business VoIP provider offering home phone replacement and cloud PBX — closely matches InPhonex's residential calling plans and small-business phone system positioning.
- magicJack: Consumer VoIP service focused on low-cost home phone replacement and international calling — direct competitor to InPhonex's Basic 500, LiteLine, and World Unlimited residential plans.
- VoIP.ms: Independent VoIP service provider offering SIP trunking, DID numbers, and per-minute pricing across many countries — comparable independent, self-funded ITSP of similar size and SMB/prosumer targeting as InPhonex.
- Telnyx: SIP trunking and voice API provider with private global IP network and competitive wholesale termination — overlapping InPhonex's SIP Termination, SIP Trunking, and DID business for carriers and high-volume buyers.
- DIDLogic: SIP trunking and international DID reseller with similar wholesale VoIP positioning across many countries — comparable independent ITSP competing for similar reseller and SMB buyers as InPhonex.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights7 records
Customer concentration
InPhonex social profiles
Digital presenceInPhonex financial estimates
Financial estimateRevenue estimate
Valuation estimate
InPhonex leadership team
Management profileNumber of profiles
Profiles3 records
InPhonex funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
InPhonex M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about InPhonex
What does InPhonex do?
InPhonex is a VoIP service provider delivering residential and business phone service over SIP, including unlimited calling plans, international DID virtual numbers, SIP termination and trunking, toll-free numbers, and a white-label reseller platform (VarPhonex). It supports bring-your-own-device hardware (IP phones/ATAs), Asterisk/Trixbox open-source PBX integration, and provides downloadable softphone software.
Is InPhonex a public or private company?
InPhonex is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was InPhonex founded?
InPhonex was founded in 2003. It employs 11 to 50 people.
Where is InPhonex based?
InPhonex is headquartered in Miami, United States, in the North America region.
How does InPhonex make money?
Seven revenue lines are on record. Subscription Plans are the primary driver. The others are prepaid Call Credit, hardware Sales, SIP Trunking and Termination, private Label/Reseller Program, international DID Numbers and toll-Free Numbers.
Who are InPhonex's main competitors?
Broad incumbents on record are Vonage, RingCentral, 8x8, Nextiva and Twilio. Direct peers are Ooma, magicJack, VoIP.ms, Telnyx and DIDLogic.
Does InPhonex have an API?
No public API is recorded for InPhonex.
What industry is InPhonex in?
InPhonex's product category is VoIP Telecommunications. Its primary akta.pro industry code is HDAIAHAD, VoIP Access & ITSP Services, with a secondary code of HDAIAHAB, Cloud PBX & Hosted Telephony. Its NAICS code is 517 and its SIC code is 4813.