Mainberg

What Mainberg does

Mainberg Limited, founded in 2010 and headquartered in Lai Chi Kok, Kowloon, Hong Kong, is a privately held international wholesale voice telecommunications company. It provides IP-based voice termination services to retail, wholesale, mobile, and tier-1 telecom operators across global markets, and operates the Sonido OTT mobile application for consumer cross-border messaging and calling.

The company's core infrastructure is an IP-based voice termination network with Points of Presence (POPs) in the UK and Singapore that connect East with West. It routes millions of minutes daily and supports CLI and signaling features alongside proactive Quality of Service (QoS) management. A 24/7/365 Network Operations Centre provides round-the-clock technical support and unified transmission management. The service portfolio is structured into three tiered packages — Premium (guaranteed QoS with CLI), Budget (quality-focused without CLI), and Economy (cost-optimized) — and a Wholesale Termination offering that delivers A-to-Z country termination to telecom operators. Sonido extends the business into the consumer segment via app store distribution.

Monetization is split between usage-based wholesale voice termination to telecom operators, subscription-based tiered service packages, and freemium consumer revenue from Sonido. The company sells primarily through direct B2B sales to telecom operators and reports connections with 500+ operators globally. Notable operator partners include Celcom, Telia, Telstra, Vodafone, HGC, China Telecom, Dialog, PCCW, Du (UAE), Tata Communications, and IDT. The company does not disclose revenue, funding, or headcount trends; ownership is private with no disclosed parent company or institutional investors.

Name

Mainberg

Legal name

Mainberg Limited

Website

https://mainberg.net

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

11–50 employees

Short description

Mainberg Limited is a Hong Kong-based international wholesale voice telecommunications company providing IP-based voice termination and a tiered service portfolio (Premium, Budget, Economy) to 500+ telecom operators globally, supported by POPs in the UK and Singapore and a consumer OTT app, Sonido.

Ownership category

akta.pro rank

Product category

Wholesale Voice Termination

NAICS

Wired and Wireless Telecommunications Carriers (except Satellite) (51711), All Other Telecommunications (51781)

SIC

Telephone Communications (No Radiotelephone) (4813), Services-Telephone Interconnect Systems (7385)

akta.pro primary industry

International Voice Wholesale (carrier voice, termination, A2P routing) (HDAIAEAD)

Keywords

• Wholesale voice termination
• International voice services
• Telecom carrier services
• OTT messaging app
• SIP trunking services

Headquarters

HQ city

Kowloon City

HQ country

Hong Kong SAR China

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Technology or R&D, Operations

Revenue model

1. Wholesale Voice Termination: International wholesale voice services providing voice termination to telecom operators across A-Z destinations. Routes millions of minutes daily over IP networks for retail consumers, businesses, and wholesale customers.
2. Service Tier Packages: Three tiered service packages - Premium Package (guaranteed QoS with CLI), Budget Service Package (quality-focused without CLI), and Economy Package (cost-optimized for price-sensitive customers.
3. Sonido OTT App: Cross-border communication OTT application providing messaging and calling services to consumers worldwide

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Mainberg is an International Wholesale Voice company that provides voice termination services to telecom operators across A-Z destinations over its IP-based network connecting the UK and Singapore. It sells tiered Direct Termination packages (Premium, Budget, Economy) tailored to different quality and CLI requirements, and Wholesale Termination services for operators needing high QoS at competitive rates, complemented by the Sonido OTT cross-border messaging and calling application.

Product overview

Mainberg is an International Wholesale Voice company providing superior voice termination services in global telecommunication markets. The company offers a tiered Direct Termination service portfolio comprising three packages (Premium, Budget, and Economy) for retail and business customers, alongside Wholesale Termination services for telecom operators requiring high QoS across A-Z destinations. The company also offers Sonido, an OTT mobile application enabling cross-border messaging and calling. Mainberg's network connects with over 500 telecommunication operators and maintains POPs in the UK and Singapore for voice traffic routing.

Differentiator

Problem solved

Functional benefit

Brands

• Sonido: An OTT application for cross-border communication that provides simple, secure, reliable messaging and calling services, available on phones all around the world.

Products and services

• Direct Termination - Premium Package Guaranteed-level voice termination service with CLI, quality, and connectivity assurance, designed for customers requiring premium service standards and committed via multi-year contracts.
• Direct Termination - Budget Service Package Cost-effective voice termination service that ensures quality and connectivity without a CLI requirement, billed pay-as-you-go for customers who prioritize quality but do not need CLI.
• Direct Termination - Economy Package Minimal-cost voice termination package with competitive rates designed to attract price-sensitive telecom customers while maintaining basic service quality, billed pay-as-you-go.
• Wholesale Termination International wholesale voice termination covering A-Z destinations, designed for telecom operators whose retail subscribers expect high QoS at competitive market rates, with CLI and signaling supported over the Mainberg network and proactive QoS management.
• Sonido An OTT application for cross-border communication providing simple, secure, reliable messaging and calling services, available for download on smartphones worldwide to keep individuals connected with friends and family across borders.

Quantifiable outcome

• Routing millions of minutes daily

Named customers4 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Twelve partnerships are on record, tiered core.

• CelcomcoreTechnology or IntegrationTelecom operator partner connected to Mainberg's wholesale voice network for voice termination services.
• TeliacoreTechnology or IntegrationTelecom operator partner connected to Mainberg's wholesale voice network for voice termination services.
• TelstracoreTechnology or IntegrationTelecom operator partner connected to Mainberg's wholesale voice network for voice termination services.
• VodafonecoreTechnology or IntegrationTelecom operator partner connected to Mainberg's wholesale voice network for voice termination services.
• HGC (Hong Kong Telecom)coreTechnology or IntegrationRegional telecom operator partner connected to Mainberg's wholesale voice network.
• China TelecomcoreTechnology or IntegrationMajor Chinese telecom operator partner connected to Mainberg's wholesale voice network.
• DialogcoreTechnology or IntegrationRegional telecom operator partner connected to Mainberg's wholesale voice network.
• PCCWcoreTechnology or IntegrationHong Kong telecom operator partner connected to Mainberg's wholesale voice network.
• Du (UAE)coreTechnology or IntegrationUAE telecom operator partner connected to Mainberg's wholesale voice network.
• Tata CommunicationscoreTechnology or IntegrationGlobal telecom operator partner connected to Mainberg's wholesale voice network.
• IDTcoreTechnology or IntegrationTelecom operator partner connected to Mainberg's wholesale voice network.
• Telecom Operators Network (500+)coreTechnology or IntegrationMainberg is connected with more than 500 telecommunication operators including tier-1 operators, mobile operators, wholesale operators, and retail operators globally for wholesale voice termination services.

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Tata Communications: Tata Communications is a major global carrier offering wholesale voice, international Ethernet, cloud, and managed services. While it operates a much broader portfolio than Mainberg, it is directly comparable on the international wholesale voice termination lane and is listed as a Mainberg partner.
• China Telecom Global: China Telecom Global is the international arm of China Telecom, providing wholesale voice, data, and connectivity services. Comparable to Mainberg on the wholesale voice termination lane, with similar operator counterparties, and is a listed Mainberg partner.
• Arelion (formerly Telia Carrier): Arelion is a global wholesale carrier offering IP transit, Ethernet, cloud connect, and international voice services. Comparable to Mainberg's wholesale voice termination lane and listed Telia as a Mainberg partner relationship.
• Vodafone Carrier Services: Vodafone's wholesale carrier business provides international voice, roaming, and connectivity services to operators globally. Comparable to Mainberg on wholesale voice termination services and is listed as a Mainberg partner.

Direct peers

• PCCW Global: PCCW Global is the international operating arm of Hong Kong Telecom, providing wholesale voice, data, and managed connectivity from a Hong Kong base. Shares Mainberg's Hong Kong domicile and East-West carrier focus, and is listed as a Mainberg partner.
• Lanck Telecom: Lanck Telecom is an international wholesale voice and SMS carrier providing A-to-Z termination and messaging routes to operators. Closely comparable to Mainberg in size, niche wholesale focus, and operator counterparty model, and is a listed Mainberg partner.
• HGC Global Communications: HGC (formerly Hutchison Global Crossing) is a Hong Kong-based international carrier offering wholesale voice, IP transit, and data services. Comparable to Mainberg on geographic base, customer profile (tier-1 and regional operators), and wholesale voice termination model, and is a listed Mainberg partner.
• BICS (Proximus Global): BICS is one of the largest international wholesale voice carriers, providing A-to-Z voice termination, roaming, and messaging services to operators worldwide. Directly comparable to Mainberg as a wholesale voice termination specialist with similar operator-counterparty business model and global lane coverage.
• IDT Corporation: IDT is a long-standing international wholesale voice termination carrier offering carrier, retail, and Boss Revolution consumer services. Comparable to Mainberg in its international A-Z termination focus and tier-1 operator counterparty base, and is explicitly listed as a Mainberg partner.

Emerging players

• Dexatel: Dexatel is a CPaaS and A2P messaging/voice provider offering wholesale communication services to operators and enterprises. Comparable to Mainberg on wholesale termination and emerging into similar operator-counterparty channels, and is a listed Mainberg partner.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/mainbergltd
• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/mainberg-limited

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mainberg