Thailand
Thailand Virtual Phone Numbers for Business
Establish a trusted local presence in Thailand. AVOXI's Thailand virtual phone numbers connect your global team to customers across Thailand through a single, reliable solution.
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Thailand Virtual Phone Numbers for Business
Expanding into Thailand shouldn't require costly infrastructure. AVOXI's Thailand virtual phone numbers route calls to any device, anywhere in the world, giving your team a credible local presence without the overhead.
Each VoIP number is easy to manage through AVOXI's software platform, including call forwarding and routing, call recording, usage and call quality data, and number testing.
Buy Thailand Phone Numbers Online
AVOXI provides Thailand virtual phone number types, each fully configurable online with instant activation and integration-ready setup for call forwarding, IVR, and inbound call handling.
Toll-Free
Professional numbers that are free for callers to dial. Ideal for customer service and support functions where accessibility and credibility matter.
TrueLocal Caller ID
Two-way inbound and outbound phone numbers with guaranteed local caller ID to drive higher answer rates and an easier way to connect with customers in Thailand.
National
Numbers reachable from anywhere in Thailand at a consistent rate — no city-specific dialing required. Ideal for businesses that want a single, recognizable number across the entire country.
Local DID
(Direct Inward Dialing)
Inbound numbers with Thailand's +66 country code and city area code. Local presence drives stronger customer trust across Thailand's regional markets.
Thailand Local DID Numbers
Thailand local DID numbers give your business a direct, local point of contact that customers can use to reach your customer service center. For companies entering or already operating in Thailand, local DIDs are one of the most straightforward ways to build credibility and trust with an in-market audience.
Unlike Singapore's single national numbering zone, Thailand uses geographic area codes that vary by city and region. Bangkok and surrounding provinces use a single-digit area code (2), resulting in numbers formatted as +66 2 XXX-XXXX. Outside Bangkok, provincial area codes are two digits (for example, 52 for Chiang Mai, 38 for Chon Buri), with six-digit subscriber numbers. Understanding which area code your customers recognize signals that you're a credible, established local presence — not an unknown overseas line.
AVOXI's Thailand local DID numbers can be forwarded to any contact center or communications application, device, or team, anywhere in the world. Whether your team is based in Bangkok or operating from a global headquarters, your customers always reach a familiar, trusted number. For businesses searching for a virtual telephone number in Thailand, local DID service is often the most direct option.
Thailand Toll-Free Numbers
Toll-free numbers put no cost burden on your callers, making it easier for customers to reach your business without hesitation. In a market where inbound customer contact is a key driver of trust, removing dialing friction can have a direct impact on contact rates and brand perception.
AVOXI's Thailand toll-free numbers follow the national 1800 and 1600 format administered by the NBTC and are routable to any global destination. Every number is provisioned through compliant local carrier relationships, built to handle high call volumes reliably across Thailand's telecommunications infrastructure. Whether you're supporting a contact center, an inbound sales team, or a dedicated customer support function, your operation stays compliant and your callers stay connected.
Two-Way Local Caller ID & PSTN Replacement for Thailand
Thailand's NBTC has taken a particularly firm stance on caller ID integrity. Following a wave of call center fraud affecting Thai consumers, the regulator requires that all outbound calls display a valid, truthful caller ID — and mobile operators are required to prefix incoming international calls with a '+' sign and specific codes so consumers can identify non-domestic calls. For enterprise teams managing ongoing customer relationships in Thailand, this regulatory environment makes a consistent, recognized local number more than a preference — it's a competitive necessity.
AVOXI TrueLocal gives businesses a consistent local Thailand number for outbound calls, so customers see a familiar number rather than an unknown international line. That same number can receive inbound callbacks, creating a more natural and trustworthy customer experience. For sales teams, customer success managers, and field operations managing ongoing relationships across Thailand, that continuity can make a measurable difference.
Replacing legacy PSTN lines with AVOXI's SIP-based infrastructure gives enterprise teams centralized control over call routing, number management, and voice quality through a single online platform. All traffic runs over Tier 1 networks delivering a 4.49+ MOS score, with real-time monitoring across latency, jitter, and packet loss. The result is a leaner, more transparent voice operation — free from carrier complexity and fully aligned with local telecommunications requirements.
Enterprise-Grade Voice Quality for Calls to and from Thailand
Tier 1 Networks
Calls are carried over tier 1 networks and secure SIP connections
4.49+ MOS Score
Our 4.49+ MOS Score sets the standard for global call quality
Real-Time Alerts
Algorithms trigger real-time alerts for security risks and suspicious traffic
VoIP Quality Analytics
Monitor VoIP quality issues like latency, jitter, and packet loss with Call Insights
Expect the Best from Your Thailand VoIP Number Service
- Simple Call Management. Manage call forwarding rules, recordings, voicemail, analytics, and number plans from one intuitive interface.
- Flexible Call Handling. Create multilevel IVR menus, virtual attendants, and personalized greetings, then route calls to any device, group, or location.
- Multiple Number Types That Fit Your Business. Get started quickly with international toll-free numbers, local DID numbers, AVOXI TrueLocal for two-way local caller ID, and more, in 150+ countries.
- Integrations for Voice and Contact Center Teams. Connect AVOXI with CCaaS, UCaaS, and other business apps, while supporting IVR, call routing, analytics, and flexible workflows.
- Proactively Test Number Performance. Use AVOXI Number Testing to monitor call quality, validate routing, and catch issues before they affect customer experience.
- Fast, Reliable, and Easy to Launch. No setup fees, no contracts, and enterprise-grade voice services built to support your business globally.
How to Buy Virtual Phone Numbers Online
Choose Your Phone Number
Pick toll free, non-geographic, or local numbers from 150+ countries, or port a number you already have.
Configure Call Forwarding Settings
Log in to begin configuring forwarding rules, IVR menus, manage numbers and self-service your account.
Download AVOXI Apps
Browse optional applications like click-to-call and mobile app to make and take calls from anywhere.
Start Connecting with Customers
Enjoy crystal-clear voice services in India and beyond with dedicated support to confirm your setup.
Thailand Virtual Phone Number FAQ
Thailand phone number costs depend on your expected call volume. Pay-per-minute plans are available for local DID numbers. Contact AVOXI for current pricing specific to your number type and volume.
Key Regulations for Voice Services in Thailand
Voice and telecommunications services in Thailand are governed by the National Broadcasting and Telecommunications Commission (NBTC) under the Telecommunications Business Act B.E. 2544 (2001) and subsequent amendments. The Personal Data Protection Act B.E. 2562 (PDPA), fully enforced since June 2022, also applies to businesses handling customer voice data. Understanding these regulations is essential for any business operating virtual phone numbers or VoIP services in Thailand.
Regulatory Overview
VoIP is legal in Thailand for business use and is regulated as a telecommunications service requiring an NBTC license. Three license tiers govern how businesses may provide or use VoIP:
- Type 1 (Service-based, no own network): Suitable for VoIP providers that do not operate their own telecommunications infrastructure. Non-transferable, valid for five years.
- Type 2 (Limited infrastructure): For providers operating limited infrastructure or serving a restricted user group. Valid for five to ten years.
- Type 3 (Public network operators): Required for operators owning or operating full telecommunications infrastructure. Valid for 15–25 years.
AVOXI routes all Thailand traffic through licensed local carrier partners in compliance with NBTC requirements.
Key Compliance Requirements
Telecom Licensing (NBTC):
Businesses providing or reselling telecommunications services in Thailand — including VoIP that interconnects with the PSTN — must operate under or in partnership with an NBTC-licensed operator. AVOXI works exclusively with licensed Thailand telecom providers to ensure all calls are routed through approved infrastructure.
Caller ID Integrity & Anti-Fraud (NBTC 2024 Measures):
The NBTC has approved stringent new anti-fraud measures (2024) requiring telecom operators to display valid, truthful caller ID on all outbound calls. Mobile operators must prefix all incoming international calls with a '+' sign and specific codes so consumers can identify non-domestic calls. Call centers and VoIP operators are prohibited from spoofing or misrepresenting caller ID. AVOXI's TrueLocal service is designed to operate within these requirements.
Personal Data Protection Act (PDPA):
Thailand's PDPA, fully enforced since June 1, 2022, requires businesses handling personal data — including voice call records and contact information — to obtain appropriate consent, limit data use to stated purposes, and protect data from unauthorized access. Non-compliance carries significant financial penalties (a 2024 enforcement action resulted in a 7 million THB fine following a data breach that enabled call center fraud).
Number Portability:
Thailand supports mobile number portability (MNP), available since December 2010 and administered by the NBTC. Businesses porting existing numbers must follow NBTC-prescribed procedures, typically facilitated through a licensed provider.
Emergency Services Compliance:
VoIP providers in Thailand must ensure that users can access emergency services from their virtual numbers in compliance with NBTC service obligations. Emergency numbers include 191 (police), 199 (fire), 1669 (medical/ambulance), and 1155 (tourist police).
SIM Registration & Subscriber Verification:
Thailand's strict SIM registration requirements mean that any numbers used for voice operations must be registered to the business or an individual with verified identity. NBTC 2024 cybercrime prevention measures require mobile operators to fully verify new subscriber information within seven days of activation.
AVOXI & Thailand Regulatory Compliance
All virtual numbers provided by AVOXI for Thailand are provisioned through licensed Thai telecom operators and routed through approved infrastructure in compliance with NBTC requirements. Our team can help guide you through the specific requirements for your use case.
Have Questions About Setting Up Business Phone Numbers?
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