For owners overseas
Contact support for your company abroad
Your company is abroad. Its support number is too. Find the right department, check when it takes calls, and see the browser call rate before you dial.
US LLC and registered-agent support
Ask your formation provider about its service or your order. IRS tax questions and EIN requests follow separate official paths.
- Northwest Registered Agent
Northwest customers with registered-agent, company-formation or existing-order questions
+1 509 768 2249
Confirm current phone-support hours with Northwest on its official contact page.
- Bizee
Bizee customers, including former Incfile customers, asking about an existing order or company service
+1 864 712 4933
Monday to Friday, 9am to 6pm, labelled CST by Bizee. Confirm its daylight-saving schedule with support before converting these hours.
- ZenBusiness
ZenBusiness customers with formation, registered-agent, order or subscription questions
+1 844 493 6249
Monday to Friday, 8am to 8pm Central time. Saturday and Sunday, 9am to 6pm Central time. Holiday hours may differ.
Singapore company support
ACRA handles company registration and filing. IRAS handles corporate income tax. Your company secretary is a separate provider.
- ACRA
people with Singapore company-registration, Bizfile or filing questions for ACRA
+65 6248 6028
Monday to Friday, 8:30am to 6pm Singapore time, except public holidays.
- IRAS corporate tax support
overseas callers with Singapore corporate income tax, ECI, Form C-S or Form C questions
+65 6356 8622
Monday to Friday, 8am to 5pm Singapore time. Closed on public holidays. Christmas, New Year and Chinese New Year eves have shorter hours, ending at 1pm.
UK company support
Companies House handles company records and filing. HMRC handles Corporation Tax.
- HMRC Corporation Tax
callers outside the UK with general Corporation Tax enquiries for HMRC
+44 151 268 0571
Monday to Friday, 8am to 6pm UK time. Closed on UK bank holidays.
- Companies House
people with UK company-filing, registration or WebFiling questions for Companies House
+44 303 123 4500
Monday to Friday, 8:30am to 6pm UK time, except bank holidays.
Dubai free-zone support
Use IFZA for IFZA services. Other free zones and UAE authorities have their own contact paths.
- IFZA
people with IFZA Dubai business-setup, free-zone or existing-service questions
+971 4 228 5285
Call centre: Monday to Friday, 8:30am to 8pm Dubai time. Sunday, 10am to 4pm. No Saturday call-centre hours are listed. Confirm holiday availability with IFZA.
Need a callback number?
Airlophone offers US and Canadian numbers for incoming calls and supported inbound SMS. Check whether your provider accepts the number for your intended use. A number rental does not establish a business address or guarantee bank, identity-verification or one-time-code acceptance.
See US and Canadian number rentalsContact sources checked October 9, 2026. Each support page links to the official source. Airlophone provides the phone connection and is not affiliated with these organisations. This directory covers contact routes, not company-formation or tax advice.