Check Disposable Phones

Overview

The checker matches the number against a database of disposable phone numbers collected from public SMS-receiving services and refreshed daily. Anyone can read the codes sent to those numbers, so a sign-up verified with one proves nothing about the person behind it. Paid plans also count how many listed numbers share the number's 100-number block, which catches fresh burner numbers from ranges the SMS sites already use. Use it to stop fake accounts at registration before you spend money sending an SMS code, and pair it with the Phone Number Validator when you also need the line type and country.

Live Test Check Disposable Phones Source →

Formula

One function covers the whole catalog: the first argument names the source, the next are its inputs, and the field after them says which single value lands in the cell. Formulas covers the grammar that applies to all of them.

=VERVE("disposablephone", A2, "isDisposable")

A2 holds the phone you are looking up. Drag the formula down and each row resolves on its own.

With literal values

Nothing has to come from a cell — typed values work the same way.

=VERVE("disposablephone", "+12085813945", "isDisposable")

Inputs

Required inputs are positional, in the order below, followed by the field. Everything else is passed as a "name", value pair after that — the same shape as SUMIFS. Premium inputs are accepted on every plan but only take effect on plans that include them.

Input	Type	Where it goes	Description
`phone`Required	string	argument 2 (A2)	The phone number to check, in E.164 format (e.g., +12085813945), or in national format together with country phone
`country`Optional	string	"country", value	Two-letter ISO country code for a number given in national format (e.g., GB for 07700 900123). Not needed for E.164 numbers

Passing an option

=VERVE("disposablephone", A2, "isDisposable", "country", "US")

What lands in your sheet

The field — the argument after the inputs — is what makes the formula resolve to one cell. Its value is a dot-path from the table below, so swapping it is how you pull a different value — one formula per column.

Seeing everything at once

Leave the field out and the formula returns the whole response instead: two columns, field name on the left and value on the right, spilling from the cell you typed in.

=VERVE("disposablephone", A2)

Good for exploring, not for filling down

The second row's table would land on top of the first's, and every cell after the first reads #REF! (#SPILL! in Excel). Keep one per sheet, or name a field, and leave the cells below and to the right empty.

Response fields

Paths are relative to data. Each one is exactly what the field argument accepts, so swapping it is how you pull a different value into a cell. On a plan without a Premium field the cell reads #PREMIUM(field) rather than a value, so a locked field never looks like a real answer.

Use as the field	Type	Example cell value	Description
`phone`	string	`+12085813945`	The phone number that was checked
`isDisposable`	boolean	`true`	Whether the phone number is a known disposable/temporary number
`firstSeen`	string	`2024-01-30`	Date the number was first seen on a disposable list, null if not listed
`listedInRange`Premium	number	`12`	How many other numbers in the same 100-number block (the number with its last two digits varied) are on the disposable list. SMS-receiving sites buy numbers in runs, so a block with several listed numbers usually belongs to one
`isRiskyRange`Premium	boolean	`true`	True when 3 or more other numbers in the block are listed. About 1 in 5 numbers newly added to the list in September and October 2026 already sat in such a block, so this flags burner numbers before they are listed

Filling a whole column

Both platforms make one batched call for a column rather than one request per cell, and both cost the same — 6 credits per row looked up. How you write it differs, because the two runtimes batch at different points.

Rows 2–100 in one call

=VERVE("disposablephone", A2:A100, "isDisposable")

In Google Sheets, give the arguments ranges and the answers spill down from the cell you typed in. Custom functions there run synchronously and in isolation, so dragged cells cannot be coalesced — the range form is how a column becomes one call. The field is required here: a per-row two-column table has nowhere to spill. Use a full column per input (A2:A100, not A2) — a single-cell reference is read as row 1 only and the rest of the column comes back blank.

In Excel, type the formula once and fill down — no range form and none needed, because its runtime is asynchronous and the add-in coalesces the calls a fill produces into a single batched request. Do not hand VERVE.CALL a range: Excel flattens it into positional arguments, so A2:A100 arrives as a hundred separate arguments and the cell reads #ERR rather than filling.

Either way, column A holds your phone values and the answers land beside them, one row each, blank rows skipped.

When a cell doesn't fill

A failed lookup returns readable text starting with #ERR rather than a spreadsheet error, because Excel cannot show a custom message on a real error — you would get a bare #VALUE! with no reason. The trade-off is that IFERROR() will not catch it; test with LEFT(cell, 4) = "#ERR" instead. Error handling covers the rest.

Cell reads	What happened
`#ERR Not connected`	No API key saved. Open the side panel and connect your account.
`#ERR Replace <name> with a cell or value`	A preview formula was copied as-is. Swap the placeholder for a cell reference.
`#ERR No "x" in disposablephone`	An option name this source does not take. The message lists the ones it does.
`#ERR No data point "…"`	The field path is not in the response. Check it against the table above.
`#PREMIUM(field)`	The field exists but your plan does not include it.
`#ERR Out of credits`	The cycle's credits are spent. Usage resets on your billing date.

Before the formula works

The add-in reads the API key you saved once in the side panel — the key never goes in the formula, so a shared sheet does not leak it and a collaborator without access simply sees the last calculated values.

Install the add-in for Google Sheets or Excel.
Open the side panel and sign in, or paste a key from your dashboard.
Type the formula above into any cell.

Use cases

User Registration: Detect and block disposable phone numbers during user registration to prevent fake accounts and improve user quality
Phone Fraud Detection: Identify temporary phone numbers used in fraudulent activities and protect your platform from abuse
SMS Verification: Ensure SMS verification codes are sent to real phone numbers, not temporary ones that can be easily abandoned
Lead Quality: Filter out leads with disposable phone numbers to focus on genuine prospects and improve conversion rates

Other ways to use Check Disposable Phones

Set up Check Disposable Phones on VerveSheets, or reach the same source a different way. Your VerveSheets account and credits work on all of them — one key, one balance.

Call it as a REST APIOne HTTPS endpoint and an x-api-key header, with SDKs for Node, Python and .NET.APIVerve →Reference →

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.VerveKit →Reference →

Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.VerveContext →Reference →