+1 800.462.8694 U.S. | +1 770.937.9735 Worldwide

Get SIP Phone Numbers

Forward calls anywhere with international SIP phone numbers. Get a SIP number anywhere for 30 days risk-free.

Get SIP numbers fast

No setup fees or minimum contracts

Forward calls to any device, anywhere

Transfer SIP phone numbers for free

Inbound and outbound calling included

Try any SIP phone number risk-free

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Purchase SIP Numbers in Any Country Risk-Free

A SIP number is a virtual DID number that handles local or international calls online. SIP DID numbers can be used for inbound call routing and outbound SIP trunking services.  In additiona, your SIP phone number from AVOXI includes 20+ features like IVR, call recording, custom caller ID, advanced routing rules and more for no additional cost. There are no minimum contracts or cancellation fees. Buy SIP numbers anywhere you want and try our global VoIP service for 30 days risk-free.

Expect the Best SIP Number Service Anywhere

virtual number services

The Top International SIP Number Provider

  • Local and international SIP numbers start as low as $4.49 per month.
  • Enjoy 15 days of free call recording or instantly activate an extended plan.
  • Earn $25 - $1,000 when you transfer your SIP numbers to AVOXI.
  • Buy SIP numbers online and start taking calls right away.
  • Every SIP phone line includes 20+ features no extra cost.
  • Get SIP phone numbers with no setup fees or contracts. Try any SIP DID plan for 30 days risk-free.

best virtual number service

SIP Number Forwarding

  • Set up SIP number forwarding to any device worldwide.
  • Update your IVR menus and personalized greetings anytime.
  • Customize call forwarding rules like time-based routing, simultaneous ringing, find-me-follow-me and more at no extra cost.

Managing Your Incoming Calls

  • Create unlimited call groups with custom handling rules.
  • View detailed analytics and call logs in your Online User Interface. 
  • Your virtual number service includes advanced forwarding, IVR, voicemail, call screening, call groups, and much more at no extra cost.

virtual business phone numbers

Outbound Calls and SIP Trunking

  • Every SIP telephone number includes global outbound dialing. 
  • Use your local or toll free SIP telephone numbers as your custom caller ID.
  • Establish controls on outbound dialing with call barring rules.
  • Add SIP trunks with up to 480 channels to any VoIP phone number. 
  • Instantly add, remove, and manage SIP trunks online anytime from your AVOXI Core User Interface.

buy voip number

Try the Top SIP Number Provider Risk-Free

  • With AVOXI, you get 99.999% uptime and reliable VoIP failover routing. 
  • Reduce costs and earn credit for transferring virtual numbers to AVOXI. 
  • Instantly buy SIP numbers at amazing rates from 140+ countries.
  • Network centers across North America, Africa, and Asia ensure amazing call quality no matter where you are.
  • Try your virtual number service for 30 days risk-free. There are no setup fees and you can transfer your phone numbers for free.

Find SIP Phone Lines for Any Need

Get the right SIP phone line plan for your company anywhere you need it.

virtual toll free number
Toll Free SIP Numbers

Easy-to-recognize business numbers that allow customers to reach you without being charged for the call.

virtual local numbers
Local SIP DID Numbers

Local phone numbers with custom caller ID for outbound calls and allow you to forward inbound calls anywhere.

Global Virtual Number Service
SIP Trunking Service

Connect your existing PSTN phone system to the cloud with SIP trunk lines. Affordable and easily scalable.

Every SIP Phone Line Include VoIP Business Features

When you choose AVOXI as your SIP number provider, you instantly get access to an easy-to-use Online User Interface. Customize flexible call forwarding rules, listen to call recordings, view analytics and reports, set up new numbers, and much more from your desktop or mobile device. AVOXI can act as your stand-alone business phone system or easily integrate with your existing PBX.

Call Analytics

Call Hold

Custom Caller ID

Voicemail-to-Email

Custom Ring Rules

Self-Service

Custom Greetings

Call Whisper

Call Barge

Custom Call Outcomes

Voicemail Transcription

 How to Buy a SIP Number Now

AVOXI makes it quick, simple, and affordable to buy SIP phone numbers for business. Set up your SIP number service today with any of these options:

  1. Buy SIP numbers online and start customizing your virtual business number settings instantly. An AVOXI specialist will contact you after your purchase to confirm your account, test your new number, and answer any questions about your business features or virtual number service.
  2. Call us directly from any of our international phone numbers to ask us any questions you have about VoIP number services or to have an AVOXI specialist help set up your new phone numbers.
  3. Submit the short contact form to request custom pricing, schedule a free demo, or to search our global database for a custom SIP telephone number.

 How Much Do Local or Toll Free SIP Phone Numbers Cost?

SIP phone line pricing depends on the number type, country, and service plan you choose. SIP numbers in popular service areas like the USA, Canada, UK, Australia, Singapore, Hong Kong, Italy, and many more start at just $4.49 per month. There are no setup fees, minimum contracts, or cancellation costs. Try any SIP phone number plan for 30 days risk-free.

1. Buy SIP Phone Numbers Online

buy sip number

Buy SIP Phone Numbers Online


Buy a SIP number online and customize your features now! After your purchase, an AVOXI specialist will contact you to ensure your service settings are working according to your preferences.

Buy a SIP number online and customize your features now! After your purchase, an AVOXI specialist will contact you to ensure your service settings are working according to your preferences.

2. Contact AVOXI Directly

buy sip phone numbers

Call AVOXI from


 US/Canada: 1 800 394 1980
singapore phone number Singapore: 800 852 6179
 United Kingdom: 0800 652 5029
Worldwide: (770) 937-9735

3. Get Custom Pricing

get sip number

Get Custom Pricing


Submit the short contact form to request custom pricing, schedule a free demo, or to have AVOXI specialists search our global database for the custom phone number you're looking for.

Submit the short contact form to request custom pricing, schedule a free demo, or to have AVOXI specialists search our global database for the custom phone number you're looking for.

Reviews from Our Customers

International SIP Numbers in 160+ Countries

Get international SIP numbers for business in 160+ countries. If you don't see the coverage area you need, contact us today! We can reserve the number you're looking for. Not all available countries are displayed below.

Have Questions About SIP Phone Line Coverage?

We're here to help! Contact us today for assistance or to request custom pricing.

SIP Forwarding Backed by a Global VoIP Network

There's a reason that over 5,000 businesses worldwide trust AVOXI as their SIP number provider. Direct interconnects with Tier 1 carriers around the world allows AVOXI to deliver reliable, high-quality business phone service globally. Our customers get the best in VoIP number reliability and failover provisioning, including fully redundant call routing and 24/7 fraud monitoring. Whether you use AVOXI as your standalone phone service or simply add our virtual business numbers to your company's existing phone system, you get:

Global Redundancy (16)

Worldwide Reliability


AVOXI's global VoIP SIP number network is backed by multiple data centers with failover routing worldwide.

Customer Focus (7)

Customer Focus


Every international SIP phone number plan includes access to 24/7 support and a dedicated account manager.

Best VoIP call quality

Superior Call Quality


Over 98% of calls handled by AVOXI score above the global standard for "excellent" VoIP call quality.

Cutting Costs (8)

Reduced Costs


Compare your current VoIP SIP telephone number rates and learn how much you can save by switching to AVOXI.

GlobalConferencing (5)

Global Coverage


AVOXI's inventory of hard-to-get SIP telephone numbers means you can start taking calls anywhere, fast.

Scalability&Flexibility (6)

Simplified Scalability


Easily add our SIP numbers to your current system or use AVOXI as your complete business phone service.

Common Questions About SIP Phone Lines

How long does it take to get a SIP number activated?

When you purchase a SIP phone number in the online shopping cart, your new business number is set up and activated within 30 minutes or less. If your business email does not match your listed company, an AVOXI expert may reach out to confirm your account details before unblocking the number.

Can I make outbound calls with my SIP DID?

Yes, all SIP phone line plans from AVOXI include outbound calling. In most cases, you can use your number as your custom caller ID.

What if I don't see the SIP phone number I need in the shopping cart?

Not all available SIP numbers are displayed in the Online Shopping Cart. If you do not see the business number you need, let us know! AVOXI is partnered with local carriers in countries around the world. If we do not already have your number in stock, we will order it for you.

Do I need to provide any documentation to get local SIP DID numbers? 

Documentation requirements vary by country. Some countries require you to provide your business address or other documentation to obtain a local virtual number. Most countries do not require any documentation from you to provide toll free virtual numbers.

I already have a virtual phone number, but I want to save money or use AVOXI's hosted number services. What can I do?

To reduce call costs or use our Cloud PBX with an existing business number, simply port your current phone number to AVOXI. Porting phone numbers is a simple process. 

I want to set up virtual number services online. What happens after I buy a virtual phone number in the Online Shopping Cart?

After selecting a virtual business number in the Online Shopping Cart, an AVOXI specialist will contact you shortly to confirm your order and ensure your service settings are set up properly. Once your order is confirmed, you will receive an email with your login information for the AVOXI Core user interface.

What other services does AVOXI offer my business?

In addition to SIP numbers worldwide, popular solutions from AVOXI include Global SIP Trunking and VoIP Number Porting.

Still Have Questions About SIP Phone Numbers?