Add a new Sipflex number
- Sign in to the Sipflex portal.
- Open Account → Numbers.
- Choose the UK area and number type you require.
- Select an available number and review the displayed price.
- Confirm the order, then connect the number to the appropriate trunk or profile.
Port an existing UK number
UK number porting costs £10 + VAT per number.
- Sign in to the Sipflex portal.
- Open Account → Numbers.
- Select Port an existing number.
- The portal opens the Sipflex UK number-porting form.
- Complete the form and submit the supporting bill.
The form linked from the portal is the authoritative starting point. There is no need to contact support simply to obtain it.
Have a current bill ready
Required document
You need a current bill from the existing provider showing the phone number being ported.
Use clear, complete documentation. If several numbers are included in the request, make sure the supporting information shows the relevant numbers.
Avoid preventable delays
- Enter the number exactly
- Use current losing-provider details
- Check that the account information matches the supporting bill
- Include every number that belongs in the request
- Do not submit conflicting requests through multiple providers
Keep the existing service active
Do not cancel the number with the existing provider before the port completes. Continue operating the existing service until the confirmed transfer point, and prepare the Sipflex trunk and inbound routing before that point wherever practical.