Certified SIP Trunk Providers Singapore

DIDWW

DIDWW, a licensed telecom operator with over 20 years of industry experience, specializes in fully compliant virtual phone numbers, voice, and messaging services across 90+ countries. The company continues to expand its global coverage and currently holds telecom licenses in 30 countries, along with its own numbering resources in 18 of those regions.
DIDWW empowers businesses with flexible, customizable communication solutions, offering a range of products that can be combined to create your perfect solution. For added convenience, all services can be easily configured and managed through the DIDWW online User Panel, ensuring full control over your communication infrastructure.

Singtel

Singtel is Asia’s leading communications technology group, providing a portfolio of services from next-generation communication, 5G and technology services to infotainment to both consumers and businesses. The Group has presence in Asia, Australia and Africa and reaches over 740 million mobile customers in 21 countries. Its infrastructure and technology services for businesses span 21 countries, with more than 428 direct points of presence in 362 cities.
For consumers, Singtel delivers a complete and integrated suite of services, including mobile, broadband and TV. For businesses, Singtel offers a complementary array of workforce mobility solutions, data hosting, cloud, network infrastructure, analytics and cyber security capabilities.
Singtel is dedicated to continuous innovation, harnessing next-generation technologies to create new and exciting customer experiences as we shape a more sustainable, digital future. The Group’s purpose is grounded in empowering our people to innovate better ways to connect with customers, unlock new possibilities for future businesses to thrive and foster a sense of ownership and belonging to better serve our stakeholders, partners and communities.

Telxi Limited

Telxi is a next-generation telecommunications provider offering enterprise-grade VoIP, SIP trunking, and cloud-based communication services. Our scalable, pay‑as‑you‑go platform includes local and international voice termination, DIDs, messaging, fax, and emergency calling—delivered over a secure, fraud-protected infrastructure.
Built for CPaaS platforms, contact centers, and seamlessly compatible with top PBX systems, Telxi ensures easy integration, instant SIP trunk provisioning, unlimited channels, and global coverage. Features include TLS/SRTP encryption, real-time analytics, call recording, and full KYC/AML compliance.
With carrier-grade reliability, flexible API integrations, and 24/7 expert support, Telxi empowers businesses to connect, scale, and operate cost-effectively—anywhere in the world.