Australian brands that sell into the US run into the same problem sooner or later: American customers want to call or text, and the store's number is +61. They won't pay international rates to ask where an order is, and US business hours happen while Australia sleeps. A US number fixes the first problem. The second needs a plan for who answers. This guide covers how Australian businesses get US numbers, why the usual shortcuts don't work, what US texting registration asks of a company with an ABN, and how to handle a 14 to 19 hour time gap.
This is general information, not legal or tax advice. We checked the sources below on October 18, 2026; carrier rules change.
The short answer
- Calls: Many virtual phone providers sell US numbers to Australian businesses and ring them on an app.
- Texts: US carriers require registration for every business number that texts. Some providers accept only a US tax ID; ask before you buy.
- Google Voice: Not an option in Australia: personal Voice is US-only, and Google calling plans for Workspace aren't sold in Australia.
- Hours: US business hours fall in the Australian night. Calls during them need an answer you don't have to wake up for.
Why Google Voice doesn't work here
Google's help center lists the numbers for personal Google Voice and its standalone plans as "US only" (Google Voice Help). For Google Workspace, Google's country list says "Google calling plans aren't available in Australia"; Australian Workspace customers can connect their own carrier through Carrier Link or SIP Link instead (Google Workspace Admin Help). Neither gives an Australian business a Google-supplied US number.
Option 1: a virtual number provider
This is how most Australian sellers do it. A cloud phone provider sells you a US local or toll-free number, and calls ring on your phone or computer in Australia. Ask before you sign up:
- Do you sell US numbers to Australian businesses, and what proof of identity or address do you need?
- Can I register for US texting with you using my ABN, or do you require a US EIN?
- How are calls answered in Australia billed? Some providers charge per minute for the leg to your Australian mobile.
- Which currency do you bill in? Many US providers bill in US dollars, so the exchange rate moves your cost.
- Can I port the number away later?
Option 2: a US company
Some Australian brands with big US sales set up a US entity for tax, payments or marketplace reasons. It gets a US Employer Identification Number (EIN), which every US texting registration accepts. The IRS says businesses based outside the US apply for an EIN by phone, fax or mail with Form SS-4 rather than online (IRS Form SS-4 instructions). It's a big decision for a phone number alone; get advice on the whole picture.
Texting US customers from Australia
US carriers block unregistered business texts. There are two registration paths, and they treat non-US companies differently:
- Local US numbers (10DLC): Telnyx's 10DLC FAQ says non-US brands can be added and that all 10DLC rules and penalties still apply to them. Its 10DLC API docs, though, describe the brand country as US or CA and the tax ID as a US EIN. In practice, whether an Australian company can register depends on the provider's form. See 10DLC registration.
- US toll-free numbers: Toll-free verification asks for a business registration number, type and issuing country on new submissions from February 2026, and Telnyx's docs give an Australian ABN as an example. That suggests a toll-free route for Australian businesses, but confirm with your provider. See toll-free verification.
Either way, US consent rules apply when you text US customers: get clear opt-in, honor STOP, and keep records. See SMS opt-in examples.
The time gap, and who answers
| US time | Sydney time, Nov to early Mar | Sydney time, Apr to early Oct |
|---|---|---|
| 9 a.m. Eastern (New York) | 1 a.m. next day | 11 p.m. same day |
| 5 p.m. Eastern | 9 a.m. next day | 7 a.m. next day |
| 9 a.m. Pacific (Los Angeles) | 4 a.m. next day | 2 a.m. next day |
| 5 p.m. Pacific | 12 p.m. next day | 10 a.m. next day |
Most of the US business day happens between midnight and late morning in Sydney. The usual options: let calls go to voicemail and reply in your morning, hire an overnight answering service, have a teammate in a US time zone, or use an AI receptionist that answers on your number and leaves your team a summary. Whichever you choose, tell callers what to expect, and give them a text or chat option so they don't have to wait for a callback.
What US customers ask an overseas store
If you're shipping from Australia, expect calls and texts about things a US-based store rarely hears. Prepare answers before your US number goes live:
- Delivery times: How long shipping from Australia takes, and where the order is now. Have tracking links ready.
- Duties and taxes: Whether the customer pays anything on delivery. Say clearly on your site who pays and when.
- Returns: Where returns go and who pays the postage. A US return address, if you have one, saves most of these calls.
- Charges in their currency: What the charge on their card will be, especially if you price in Australian dollars.
- Are you real?: Some callers just want to know a person or business is behind the store. A quick, friendly answer on a US number goes a long way.
Write these answers into whatever handles your calls, whether that's a voicemail greeting, an answering-service script or an AI receptionist's instructions, so customers get them at 3 a.m. Sydney time without waiting for you.
Choosing an area code
- Toll-free: Free for US callers and not tied to a city, which suits a national online store. It may not accept calls from outside the US.
- A local area code: Pick the area code of your biggest market, or your US warehouse, if you have one. Local numbers text under 10DLC registration.
- Keep it simple: One US number on your site is easier for customers than several.
Customers in Australia
Keep your Australian number for Australian customers. A call from Australia to your US number is international for them, and US toll-free numbers often don't accept calls from abroad (Aircall's help center). Show each market its own number on your site.
A checklist before you buy
- Calls only, or calls and texts?
- Local US area code or toll-free?
- Get the provider's answer in writing on registering an Australian business with an ABN.
- Check the billing currency and international usage charges.
- Decide who answers during the Australian night.
- Make sure you can port the number out.
How Chargezen helps
Chargezen offers US (+1) numbers only. What we've confirmed, and what we haven't:
- Answers while you sleep: Concierge answers calls on your US number as an AI receptionist that knows your store: it recognizes the caller, looks up their orders and handles the request within the rules and approvals you set. Your team picks up the thread in the morning.
- A person when needed: When a caller needs a person, Concierge alerts your team in the Finn app and the browser, and emails or texts the teammates you pick. A teammate awake in any time zone can join from the browser. See human handoff.
- Your number: New numbers are US toll-free numbers. You can also bring a US number you already have.
- Texting: contact us to confirm: Our in-app 10DLC form asks for a US EIN, US state and 5-digit ZIP code, so an Australian company without a US entity can't complete it there today. We haven't confirmed that an Australian business can complete toll-free verification through Chargezen. Contact us before you count on texting. Chargezen texts go to US numbers.
- Billed in US dollars: Concierge Starter is $20 a month with 20,000 credits. Pro is $199 a month with 199,000 credits, or $1,990 a year. Phone and text charges are billed as used. See pricing.
Chargezen doesn't sell Australian numbers, call forwarding or international calling. Related terms: toll-free verification, 10DLC and AI receptionist. Related guides: how to call the US from Australia, a US phone number in the UK and AI receptionist vs answering service.
Frequently asked questions
Can I use Google Voice in Australia to get a US number?
No. Personal Google Voice is US-only, and Google calling plans for Workspace aren't available in Australia.
Can an Australian company text US customers?
Yes, once a US number is registered with US carriers. Toll-free verification accepts business registration numbers, with ABN given as an example in Telnyx's docs; 10DLC acceptance varies by provider.
What does a US number cost?
It depends on the provider and number type, and US providers usually bill in US dollars. Add carrier registration fees if you plan to text.
How do I handle US calls overnight?
Voicemail with a next-morning reply, an overnight answering service, a US-based teammate or an AI receptionist on the number.
Sources
Google Voice Help; Google Workspace: Voice supported countries; Telnyx 10DLC FAQ; Telnyx 10DLC brand registration; Telnyx toll-free verification; IRS Form SS-4 instructions; Aircall's help center; Fair Work Ombudsman; NIST. All checked October 18, 2026.
