VoIP Number Porting: How It Works and How to Switch in 2026

How Does VoIP Number Porting Work?

VoIP number porting is a process that moves your existing business phone number from your current carrier to a new VoIP provider without changing a single digit. Here is how it works: you sign a Letter of Authorization, your new provider submits the port request, your old carrier validates the account, and on port day your number starts ringing on the new system. Customers never notice the switch.

Can I keep my number when I switch to VoIP? Yes. Carriers must honor valid port requests, so landline, mobile, and VoIP numbers can all move, including lines facing copper landline retirement.

How long does porting take? Simple single-line ports can finish in one business day, and most business ports with Phone Service Now complete in 5 to 10 business days.

What does it cost to switch? Phone Service Now plans start at $18.99 per user per month, month-to-month, with a one-time $25 setup and training fee.

Most businesses delay switching phone providers for one reason: they are afraid of losing the number customers already know. Porting removes that risk. New to VoIP numbers? Start here: how to get a VoIP phone number for your business.

Why Port Your Number Instead of Starting Over

Your phone number is a business asset. It is printed on your trucks, saved in hundreds of customer contacts, listed on your Google Business Profile, and tied to every review and directory listing you have built. A new number throws all of that away. Porting keeps it, along with the trust and search visibility that number has earned over the years.

Under Local Number Portability (LNP) rules enforced by the FCC, the number belongs to you, not to your carrier, and interconnected VoIP providers are covered by the same porting obligations as traditional phone companies. When a port completes, the national routing database (the Number Portability Administration Center, or NPAC) points your number to the new provider. Your old carrier simply stops being the carrier of record, and its monthly bill stops with it.

That is the real reason to port rather than forward. Forwarding means paying your old carrier every month just to redirect calls. Porting ends that bill entirely and puts the number on a system with features legacy lines cannot match: an auto attendant that greets callers by department, call forwarding to any cell phone, call recording, voicemail delivered to email as text, and texting from your business number.

One question we hear constantly from business owners is whether switching means starting over with customers. It does not. The same number rings, in more places, on a plan that often costs less than the line you have now. The only thing that changes is who you pay and what that number can do.

VoIP Number Porting: How It Works Step by Step

VoIP number porting works in six stages: you confirm the number is portable, gather your account details, sign a Letter of Authorization, your new provider submits the request, your old carrier confirms a date, and the number activates on the new system. Your current service stays live the entire time.

1. Confirm portability. Your new provider checks that it can serve the number in its local rate center.
2. Gather your account details. Pull a recent bill showing the account number, account holder name, service address, and every number on the account.
3. Sign the Letter of Authorization (LOA). The LOA gives your new provider written permission to request the number for you, and it must match your carrier records exactly.
4. Submit the port request. Your new provider sends the request to your current carrier, which checks it against the Customer Service Record (CSR).
5. Receive the Firm Order Commitment (FOC). The old carrier accepts the request and returns the date your number will switch.
6. Test and go live. On port day, the number activates on your new system and you place test calls before canceling anything.

When you port with Phone Service Now, we handle steps one, four, and five for you. You sign the LOA and send a recent bill; we submit the request, track the FOC date, and follow up with your old carrier. While the port runs in the background, we build your users, greetings, and call routing, so your new system is ready the moment the number lands.

What You Need to Port Your Number

To port a phone number to VoIP, you need a signed Letter of Authorization, your current account number, the account holder name and service address exactly as your carrier lists them, the billing telephone number, and any port-out PIN. A recent phone bill covers most of it.

The word that matters is “exactly.” Your old carrier compares the request field by field against its records. If the CSR lists “Smith Dental Group LLC” at Suite 200 and your LOA says “Smith Dental” with no suite, the carrier can reject it. Confirm these items before you sign:

• Port-out PIN. Wireless carriers and many VoIP providers require a separate transfer PIN, and FCC fraud rules now require wireless carriers to verify your identity before releasing a number.
• Billing telephone number (BTN). If you port the main billing number but leave other lines behind, those lines need a new BTN first.
• Every number on the account. Include fax, alarm, and rollover lines. Anything left off stays with the old carrier.
• An authorized signer. The person signing the LOA must be authorized on the account, which matters when the original account holder has left the business or the account is under an old company name.

Not sure your bill has everything? Send it to us during your call and we will check it against the LOA before anything is submitted, which is the single best way to avoid a rejected port.

How Long Does Number Porting Take in 2026?

In 2026, FCC rules require a simple single-line port to be completed within one business day of a valid request, while non-simple business ports have traditionally taken about four business days. With Phone Service Now, most business ports complete in 5 to 10 business days from a complete, signed LOA.

The one-business-day rule comes from the FCC’s Porting Interval Order (FCC 09-41), codified at 47 CFR 52.35, and a request must reach the old carrier by 1 p.m. local time to count as received that day. Most business accounts are not simple, though. Multiple lines, hunt groups, and rollover numbers make a port non-simple, and toll-free numbers move separately by changing the number’s Responsible Organization (RespOrg) in the toll-free registry administered by Somos.

Port type	FCC interval	What usually adds time
Simple single line	1 business day	LOA errors or a request sent after the 1 p.m. cutoff
Non-simple multi-line	About 4 business days, traditionally	Number of lines, hunt groups, and CSR mismatches
Mobile to VoIP	1 business day when simple	Port-out PIN and identity checks
Toll-free (800, 888, 877)	Separate RespOrg process	RespOrg response time and paperwork

Providers often come to us after a previous port dragged on for weeks because nobody caught a rejected request. We track the FOC date and tell you the exact day your number moves, so you can plan around a real date.

Why Number Ports Get Rejected

The most common rejection we see is not technical. It is a typo. Carriers must honor valid port requests, but the losing carrier decides whether the paperwork matches its records. These issues cause most rejections:

• Mismatched account details. A name, suite number, or ZIP code that differs from the CSR, even slightly.
• A wrong or missing PIN. Many wireless and VoIP accounts need a transfer PIN the customer never set.
• Canceled service. Once an account closes, the number can return to the carrier’s pool and may be impossible to recover.
• Pending orders. An open move, feature change, or disconnect order freezes the port until it clears.
• Partial ports with no new BTN. Porting the main billing number while leaving other lines behind without reassigning the BTN first.
• Unportable numbers. A number outside the new provider’s coverage area, or served by a rural carrier with an FCC porting waiver, may not move.

A rejection comes back with a reason, and the fix is to correct that field and resubmit, not to start over. The one mistake you cannot undo is canceling your old service early. Keep it active until your new provider confirms the port is complete. This is exactly why businesses hand porting to us: we read the rejection, fix it, and resubmit the same day instead of letting it sit.

Port Your Number to Phone Service Now

Phone Service Now is an all-in-one VoIP phone service built for small businesses and growing teams. Every plan includes unlimited minutes and web and mobile app access, with no long-term contract. Setup typically takes one business day, so your team can start using the new system right away while the port completes. Support is available Monday through Friday, 9 a.m. to 5 p.m. Eastern, and the service is HIPAA compliant for healthcare practices.

Plan	Price per user	Best for and key features
Business Basics	$18.99/month	1 to 2 users; unlimited minutes, 1 local number, web and mobile access
Business Plus	$23.99/month	1 to 25 users; adds a free toll-free number, 30 days of call recording, business texting
Business Platinum	$27.99/month	Any size; adds auto attendant, call queues, unlimited recording, voicemail to email as text

Here is what that looks like in real numbers. A five-person office on Business Plus pays about $120 a month plus a one-time $25 setup and training fee, with numbers ported in and a toll-free line included. Compare that against what you pay today with our guide to what a business phone line should cost, or see every plan on our pricing page.

If your carrier has sent a copper retirement notice, act before the network change date. Verizon’s copper landline retirement is affecting businesses in several states this year, and copper numbers port to VoIP like any other number. Customers often come to us with only weeks left, and porting before the deadline is the simplest way to keep your number safe.

Frequently Asked Questions

Next Steps

• Compare plans. See every feature and price on our pricing page.
• Leaving copper? Read what Verizon’s copper landline retirement means for your lines.
• Need a number while you wait? Learn how to get a VoIP phone number.
• Weighing cost first? Find the most affordable VoIP phone service for small business.
• Ready to port? Book a call and we will review your bill and start your LOA today.