How to Port Your Number from Nextiva to Zinng

If your business number is currently on Nextiva and you want your Zinng AI receptionist to answer calls and texts on that number, you need to transfer (port) it to Zinng. This guide walks you through the entire process step by step. It takes about 10 minutes of your time, plus roughly 1 week for a local number to complete (longer for toll-free numbers, see the note below).

Local vs Toll-Free: Which Applies to You

There are two versions of this process, and which one you follow depends entirely on whether your number is a regular local number or a toll-free number. Read this first so you know which path you are on.

Everything in Steps 1 through 5 applies to both. If you have a toll-free number, there is one extra step (the Toll-Free Only section) that a local number can skip. Your number keeps working the entire time either way.

What You'll Need

For any number (local or toll-free):

• Access to your Nextiva admin portal (the NextOS / Nextiva Voice portal at nextiva.com), with administrator permissions
• Your Nextiva account number and your porting PIN
• Your Nextiva billing name and service address, exactly as they appear on your account
• An account in good standing, with no outstanding balance, billing hold, or pending order (any of these will block the port)

Extra for toll-free (800) numbers:

• A recent Nextiva bill or invoice (last 30 days) that shows your account number and address, or a Customer Service Record (CSR) if the invoice does not show those details. See the Toll-Free Only section.

Step 1: Find Your Account Number and PIN

Sign in to your Nextiva admin portal (NextOS / Nextiva Voice) at nextiva.com using your administrator login. The details a port needs are in your account settings and on your invoice:

• Account number — your Nextiva account number, shown in the admin portal and printed on your invoice. It is often tied to your main billing telephone number (BTN).
• Porting PIN — Nextiva uses a PIN to authorize a port-out. If you set a PIN when your account was created and still have it, use that. If you do not know it, call Nextiva Support and ask for the PIN needed to port your number out.
• Billing name and service address — the account holder name and the service address exactly as Nextiva has them on file. Copy these exactly.
• Your invoice — download your most recent invoice from the billing area of the portal. You only need this for a toll-free port (see Step 2).

If you cannot find your account number or the porting PIN, call Nextiva Support at 1-800-799-0600 and ask for your account number and the PIN required to port your number out. Also confirm your account has no outstanding balance or billing hold, because those will block the port before it starts.

Step 2: Gather Your Account Details

Collect the following so the port goes through on the first try. The name and address must match Nextiva's records exactly, mismatches are the most common cause of port delays.

• The phone number(s) you want to port
• Your Nextiva account number
• Your Nextiva porting PIN
• The account holder / billing name on the Nextiva account
• The service address on file with Nextiva
• Toll-free numbers only: your most recent Nextiva bill or invoice, or a CSR (see the next section)

Porting a local number? You can skip the next section and go straight to Step 3, the account number, PIN, and matching name and address are all that a local port needs.

Toll-Free Only: Get a Bill or CSR That Shows Your Account Details

This section only applies if you are porting a toll-free number (800, 888, 877, 866, 855, 844, or 833). Local numbers do not need it.

A toll-free port requires a document that proves the account details: your account number, the account holder name, and the service address. First try downloading your latest invoice from the billing area of the Nextiva portal.

If your invoice does not clearly print your account number and service address, do one of the following:

• Send a screenshot of your Nextiva account settings showing your account number and billing name and address alongside the invoice, so all of it is visible, or
• Request a Customer Service Record (CSR) from Nextiva. The CSR is the official record of your account number, name, and address as the carrier has them, and it is the document that reliably unblocks a toll-free port. Call Nextiva Support at 1-800-799-0600 and ask for your CSR for porting.

Not sure which you need? Just send us whatever your invoice shows and we will tell you if it is enough or if we need the CSR. We can also help you request the CSR from Nextiva.

Step 3: Send Your Details to Zinng

Start your Zinng trial, then send your Zinng contact (or email [email protected]) the number you are porting, your account number, your porting PIN, and the billing name and service address on file. For a toll-free number, also include your most recent bill or your Customer Service Record (CSR).

From there, number porting is our job. We handle the carrier side and keep you posted until your number is live on Zinng.

Step 4: Sign the Letter of Authorization

Once we have your details (and, for a toll-free number, your bill or CSR), we prepare a Letter of Authorization (LOA) and send it to you. The LOA is what gives us permission to move the number on your behalf, and it is a normal part of every port, local or toll-free. All you have to do is sign it and send it back.

The LOA usually arrives as a PDF. If you are not sure how to sign a PDF, you do not need to print anything, you can sign it online for free in a couple of minutes. We have a short walkthrough here: How to Sign a PDF for Free. Once it is signed, send it back to us and we start the port.

Step 5: Wait for the Port to Complete

Nextiva port-outs typically take about 3 to 7 business days for a local number. Toll-free numbers (800, 888, 877, and similar) take longer, usually around 7 to 14 business days, because they go through a separate toll-free porting process. Your number keeps working on Nextiva the entire time, so you will not miss calls during the transfer. There is usually a brief cutover (a few minutes) at the exact moment the number switches to Zinng. We will email you when it goes live.

Step 6: Cancel Your Nextiva Account

Only after we confirm the port is complete should you cancel your Nextiva plan. Nextiva is required to release your number as long as your account is in good standing, but the account does not close automatically, so once the number has moved, contact Nextiva to close out the service for that number so you are not billed further. Check your contract terms first, since canceling before the end of a term can carry an early-termination fee (this is separate from the port itself, which is free).

Things to Know

• Porting is free. Nextiva does not charge a fee to port your number out. (An early-termination fee on your plan is separate, check your contract.)
• Stay in good standing. An outstanding balance, billing hold, or pending order on your Nextiva account will block the port. Clear these first.
• Keep your account active. Do not cancel Nextiva until the port is done, or you risk losing the number.
• US and Canada, local and toll-free. Nextiva local numbers and North American toll-free numbers can be ported. International numbers cannot.
• Toll-free needs one extra document. Local numbers just need your account number, PIN, and matching name and address. Toll-free numbers also need a recent bill or a Customer Service Record (CSR), because they go through the separate RespOrg process.
• Details must match. The account name and address you give us must match Nextiva's records exactly, or the port can be rejected.

About the Author

Timothy Bramlett

Co-Founder & CEO, Zinng

Timothy Bramlett is an American entrepreneur, software engineer, and product strategist. He is the founder of Zinng, an AI-powered phone agent platform that helps businesses never miss a customer call with intelligent call handling, real-time transcripts, and instant summaries.

View profile →