Of all the reasons businesses stay with a telecoms provider they have stopped liking, the biggest is not price or contract length. It is the fear of losing the number. Twenty years of letterheads, van livery, Google listings and repeat customers all point at one set of digits, and nobody wants to gamble with it.
The good news is that in almost every case you keep it. The bad news is that there is one mistake that loses it permanently, and it is an easy one to make. Here is how porting actually works.
Can I keep my number if I switch provider?
Yes, you can almost always take your number with you. It is called porting, and it means the number is transferred from your old provider to your new one. It is a legal process between the two companies, not a technical trick, and it is routine.
The exceptions are rare: some non-geographic and specialist numbers behave differently, and a number that has already been disconnected cannot be recovered. That second one is the trap.
Never cancel your old service first. A number that has been disconnected is gone, and no amount of goodwill from either provider brings it back. Always port first, then cancel.
Why does cancelling first lose the number?
It feels logical: close the old account, open the new one. But porting moves a live number between providers. The moment your old service is terminated, the number goes back into the pool and the port has nothing to move. We have seen businesses lose numbers they had held for decades this way, usually because someone tried to be helpful and tidy up the billing.
Let the new provider run the port, and cancel only once the number is confirmed live on the new service. Any provider worth using will tell you exactly when that is.
What do you need to port a business number?
Ports fail on paperwork far more often than on technology, and nearly always because a detail does not match what the losing provider has on file. To give it the best chance we need:
- A recent bill for the line or lines, ideally the most recent one.
- The exact account details as your current provider holds them, not as you would write them today.
- The installation address in the format on the bill, including any suite or unit number.
- A letter of authority so we can act for you with the losing provider.
- A full list of numbers if you are porting a range, including any you rarely use.
Why do number ports get rejected?
A rejection is not usually a refusal, it is a mismatch. The common ones:
- The business name has changed since the line was installed and the old provider still has the previous one.
- The address on the order does not match the address on the account, often by something as small as a missing unit number.
- The account number has been transcribed wrongly, or a customer reference has been given instead.
- Part of a number range has been requested rather than the whole range.
- There is an unpaid balance or a dispute open on the account.
Each of those is fixable, but each costs days. Getting the details right at the start is worth more than any amount of chasing later.
How long does number porting take?
A straightforward single-line port is usually measured in working days rather than weeks. A larger range, a multi-site setup, or anything where the records need correcting takes longer, and the honest answer for a complex estate is that it depends on what the survey of your existing lines turns up.
What matters more than the headline figure is that nothing changes for you until cutover. Your existing service keeps running throughout, and the switch itself is brief.
Can I keep my number if I move premises?
This surprises people. Traditionally a geographic number was tied to an exchange, so moving across town meant a new number. Once a number is on a hosted phone system it is no longer tied to a physical line, so you can keep an 0151 number while working from anywhere, and keep it if you move.
That is one of the quieter advantages of moving off copper, and worth knowing about if a move is on the horizon. Our moving premises checklist covers the rest of the sequence.
What happens on the day of the port?
Cutover is usually a short window during which calls transfer from the old network to the new. We agree the date and time with you in advance, and we pick a quiet period rather than the middle of your busiest morning. Your new system is built and tested beforehand, so the port is the last step rather than the first.
Afterwards, keep an eye on anything that dials out on your behalf: alarm lines, card machines, lift lines and franking machines are all easy to forget and all worth checking.
What we do
We run the port, deal with the losing provider, and chase the rejections rather than forwarding them to you with a shrug. If a detail does not match, we work out what the old records actually say and resubmit. And we will tell you plainly if a number cannot be ported, before you commit to anything, rather than after.
If you are thinking about changing provider and the number is what is stopping you, that is the conversation to have first. Have a look at our hosted phone systems, or just ring and ask.
Number porting questions, answered
Can I port a number my provider says I do not own?
Usually yes. Numbers are allocated to providers by Ofcom and assigned to you, so a provider saying you "do not own" a number is describing the allocation, not a refusal to port. The right to take it with you is separate, and losing providers cannot unreasonably refuse a valid porting request.
Can I port only some of my numbers?
Sometimes, but it depends how the numbers were supplied. A block allocated as a single range often has to move as a range. Tell us every number you hold at the outset, including ones you rarely use, so we request the right thing first time.
Will my phones stop working during the port?
No. Your existing service runs as normal right up to cutover, which is a short switch at a time we agree with you. The new system is built and tested before that point, so the port is the last step rather than the first.
What happens to my number if I go out of contract?
Being out of contract does not put the number at risk on its own. Disconnection does. If you are on a rolling arrangement and thinking about moving, start the port before giving notice, not after.
Can I keep an 0151 number if my business leaves Merseyside?
Yes, once the number sits on a hosted phone system rather than a physical line. Geographic numbers are no longer tied to an exchange, so an 0151 number can ring anywhere. Plenty of businesses keep a local presence this way after moving.