Get your Hong Kong "din wah" with local numbers starting at $9.95 or toll-free numbers at $119.95.

We offer national prefixes 852-58 for local and 852-800 toll-free options.

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Use any device or software

Any device can be used to make and receive calls with your FlyNumber.

PC and smartphone and server and laptop in hand-drawn style

Choose from 4 powerful ways to use your FlyNumber

1.) Use FlyNumber SIP to make and receive calls

Incoming call Rings every registered device
🇺🇸
+1 307 429 0155 United States · Sheridan, WY
Included in the number's monthly rate
Outgoing call Dial out from any SIP app or desk phone
Caller ID +1 307 429 0155
🇺🇸 Your number
Billed per minute from your prepaid balance
FlyNumber SIP Make and receive calls
Built-in VoIP
Your own SIP credentials — works with any SIP app or desk phone.
Username13074290155
Password••••••••••
SIP serversip.flynumber.com
DevicesUp to 5
Phone, desktop and desk phone ring together
VoicemailBuilt in
Picks up when no device answers
  • Make and receive calls with your Hong Kong number in any SIP calling app from the app stores — Zoiper, Groundwire, Linphone and more — or on a desk phone. We help you set it up.
  • Incoming calls are included in the number's monthly rate; outgoing calls are billed per minute from your prepaid balance, with your Hong Kong FlyNumber as the caller ID. Hong Kong numbers can't call internationally — see the Hong Kong-specific limitations.
  • Register up to 5 devices, with voicemail built in.
  • Pick your own Hong Kong number when ordering — search by digits or letters.
Set up FlyNumber SIP

2.) Let an AI voice agent answer your Hong Kong calls

Set your Hong Kong number to AI voice agent answers and a built-in agent picks up. It answers questions from what you tell it, takes messages and transfers callers to you.

You write its rules in plain language in your panel: a "When…" sentence plus one action, like "When the caller wants a callback, take a message."

$0.10 per minute of AI conversation, billed per second. No monthly fee for the agent.

Create an AI voice agent How it works
Speaks your callers' language Greeting in 16 languages. The agent switches to the caller's.
English Español Français Deutsch العربية עברית हिन्दी 中文 日本語 한국어 Português +5 more
How a call goes Sunset Bike Repair
Caller dials🇭🇰 +852 58 ••• •••
Recorded greetingHi, you've reached an AI assistant.
Agent saysThanks for calling Sunset Bike Repair. What can I do for you?
Acts on the rule that matches
1.
The caller asks about repair pricesJust answer
2.
The caller asks for the ownerTransfer to +852 ••• ••• •••
3.
The caller wants to book a repairTake a message
4.
The caller says they're doneEnd the call
If it can't take the callGoes to voicemail
New messageBy email and in the panel
Just now
Dana Levi Wants to book a tune-up for Saturday morning. +852 ••• ••• •••

3.) Forward the Hong Kong phone calls to any standard phone number worldwide

Illustration of a phone receiver next to a world map with location markers, a keypad, and an envelope icon, representing global call forwarding and communication options.
  • For a low per min rate you can forward the Hong Kong calls to any regular phone number in the world.
  • You'll see the caller ID of the person calling your Hong Kong FlyNumber on the phone you're forwarding to.
  • Change the forwarding number anytime via the FlyNumber panel.
  • Consider our optional cloud phone system to enhance call forwarding options.
Call Forwarding Options

4.) Set the Hong Kong number directly to VoIP

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  • Set the Hong Kong number directly to a SIP/VoIP address.
  • We'll send the Hong Kong calls to a VoIP destination for free (unlimited minutes).
  • High level call logs to help diagnose/debug any issues.
  • Use any 3rd party VoIP provider or your own PBX system (Asterisk, FreePBX, 3CX, etc.)
  • In your FlyNumber panel this is the Forward to SIP / VoIP Address option.
Details on using Direct VoIP

Note

Switch between them any time from your FlyNumber panel. Two more settings live there: Park the Number, which stops the number ringing anywhere (callers hear busy) with no call charges, and the optional cloud phone system, $14.95 a month for voice menus, ring groups and business hours.

FlyNumber’s stand-out features

  • Manage costs effectively with charges based on phone numbers, not users.
  • Own your Hong Kong phone number (national numbers can't be ported out to another provider).
  • Unlimited incoming call minutes on Hong Kong VoIP calls.
  • Adapt forwarding settings anytime through your account panel.
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Registration Requirements

  • National

Business registration required: full name, contact phone number, company name, incorporation certificate, and Hong Kong Tripartite Agreement.

A Hong Kong address and recent utility bill (less than 6 months old) are required.

  • Toll-free

Personal: Full name and contact number. Business: Full name, contact number, and company name.

A full address is required (can be from anywhere in the world).

Please review our Hong Kong-specific limitations — national numbers can't be ported out, and international outbound calling isn't available.

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Example use cases

Marketing campaign tracking

Assign unique numbers to Facebook ads vs. MTR posters to see which campaigns drive the most calls.

Real estate agents

Use a local +852 number on property listings to build trust and make viewings easier to schedule.

Privacy on Carousell

Buy and sell without revealing your personal number.

Travelers and jet-setters

Forward Hong Kong calls to wherever you are, avoiding roaming charges.

Expat community

Give family back home a local Hong Kong number to reach you affordably.

Call like a local, pay like a local

In many cases if you make outgoing calls to a Hong Kong phone number using a Hong Kong FlyNumber as the caller-ID the rate is significantly cheaper.

  • The rate is sometimes 10x cheaper so if you call a certain country often, it pays to get a FlyNumber from there.
  • Anytime you make outgoing calls with FlyNumber (via FlyNumber SIP or the optional phone system) there is a low per minute rate.
  • You can make outgoing calls with FlyNumber SIP or from the optional phone system.
  • More details on the phone system billing can be found in our docs.
Illustration of a pink vintage rotary phone with piggy bank features, a detached green and yellow telephone receiver, and a golden coin with a dollar sign in the background, symbolizing saving money on phone calls.

General technical details on Hong Kong numbers

  • Country code: +852, no area codes.
  • Local dialing: Directly dial 8-digit phone number.
  • Format: Eight digits, no spaces or dashes.
  • History: Standardized to 8 digits in 1989.
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FAQs

Are there any restrictions for Hong Kong phone numbers?

Yes. Hong Kong numbers can't make international outbound calls, national numbers can't be ported out to another provider, and international caller IDs may not display on incoming calls. See the Hong Kong-specific limitations for details.

What benefits does FlyNumber offer for Hong Kong businesses using a cloud-based phone system?

FlyNumber's cloud-based phone system provides Hong Kong businesses with advanced features like call recording, IVR/menus, and time-based routing, all for a flat fee. Outgoing calls can be made with FlyNumber SIP or the phone system, showing the Hong Kong number as the caller ID — note that international outbound calling isn't available on Hong Kong numbers.

How does FlyNumber's call forwarding work for Hong Kong virtual numbers?

FlyNumber forwards Hong Kong virtual numbers to any global phone number, displaying the caller ID of the original caller. Users can adjust forwarding numbers through the FlyNumber panel, supporting flexible communication with international clients.

Can FlyNumber work with my existing VoIP provider in Hong Kong?

Yes, FlyNumber can route Hong Kong virtual numbers directly to your existing VoIP/SIP address, allowing unlimited incoming minutes. It supports various on-premise solutions like Asterisk and FreePBX, compatible with the SIP protocol.

What makes FlyNumber suitable for startups in Hong Kong?

For startups, FlyNumber's hosted PBX offers an affordable and scalable solution. It enables routing of the Hong Kong number to multiple endpoints, integrating easily with VoIP services and supporting growth without heavy infrastructure investment.

Is it possible to see call logs for my Hong Kong FlyNumber?

Absolutely, FlyNumber provides detailed call logs for both successful and failed calls, ensuring businesses have comprehensive records to optimize customer service and track communication patterns effectively.

Hong Kong forum topics

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Why choose FlyNumber?

Never any contracts or obligations, cancel anytime.

Crystal quality phone calls.

Customer service 7 days a week.

Turn on Auto-Renew — each renewal is a one-time charge — or add funds manually.

We've been in business for well over a decade.

Get your Hong Kong number today
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