Can I Keep My Business Number When Changing Phone Provider?

In many cases, a UK business can keep its telephone number when changing provider. This is known as number portability. Ofcom rules support the right to port, but a successful order still depends on accurate records, a compatible destination and the technical status of the number.

Do not cancel the existing service simply because a new provider has been selected. The port should form part of the migration plan.

Which numbers can be kept?

Geographic, non-geographic and mobile numbers can often be ported, although processes differ. The new provider should check the range holder, current network and whether the number is active and portable to the proposed service.

Numbers in a contiguous range may need to move together. A single published DDI can be technically linked to a larger block, so the full inventory must be understood.

What information is needed?

Prepare the current provider, account name, billing number, installation address, postcode, number list and recent bill. Records should match the losing provider exactly. Business trading names and site addresses that have changed over time are common sources of mismatch.

A managed business number port should include validation before a target date is promised.

Will changing a number affect broadband?

It can when telephone and broadband services are bundled or share the same underlying line. Ask the current and new provider to identify dependencies. Moving a number without planning the associated access service can cause an unintended cease.

What if the service was already cancelled?

Ofcom states that customers may still request to keep a number for at least one month after switching or cancellation in many circumstances. Recovery is not something to rely on: contact the intended provider immediately and avoid further account changes.

How is the number used after the port?

The new platform must have the correct destination, schedules and outbound presentation configured. Test calls from several networks and verify queues, voicemail and out-of-hours treatment. Update emergency-location and account information where required.

The number can route through managed business telephone-number services to a hosted PBX, SIP trunk, team or contingency destination.

How to reduce risk

• Inventory every number and associated service.
• Match the losing provider’s records exactly.
• Validate range and broadband dependencies.
• Build and test the destination before the port.
• Do not cancel the old service prematurely.
• Test all important routes after completion.

Keeping the number is often achievable, but it deserves the same care as the rest of the phone-system migration. Ask our porting team to check your number before changing the existing account.