TextNow Phone Number Lookup

What Is a TextNow Number and Why Is It on My Caller ID?

TextNow is a free calling and texting app. Anyone can download it and get a real, working US or Canadian phone number in minutes, no SIM card or phone contract required. The numbers work over the internet, which makes them VoIP numbers.

When you look up a number that was created through the app, the carrier lookup shows "TextNow" or the wholesale carrier that supplies TextNow's numbers, such as Onvoy. It will never show the name of the person using the app, because the number belongs to the service, not to a registered subscriber.

Is a call or text from a TextNow number spam?

Treat it with more caution than a regular mobile number. Millions of people use TextNow legitimately as a second line or a budget phone. But because the numbers are free, anonymous, and take minutes to create, they are heavily used for spam, scam calls, and fake accounts. A TextNow number contacting you about money, prizes, or verification codes deserves real skepticism.

Never share a verification code, don't trust caller ID names, and use the lookup tool above to confirm a number's carrier and line type. Block unwanted numbers and report persistent offenders at donotcall.gov.

How to Identify TextNow Numbers Using Abstract API

Abstract's Phone Number Validation API offers a reliable way to check whether a phone number is an app-based VoIP number.

Step 1: Sign Up and Get Your API Key

Sign up for a free account with Abstract API. Your unique API key is on your account dashboard after you register.

Step 2: Send a Request to the API

Send a GET request with your API key and the phone number in international E.164 format:

https://phonevalidation.abstractapi.com/v1/?api_key=YOUR_API_KEY&phone=+15558675309

Step 3: Interpret the Response

The JSON response includes the number's validity, country, location, line type, and carrier. A TextNow number typically returns a VoIP line_type with "TextNow" or its wholesale partner in the carrier field.

Why Identifying a TextNow Phone Number Is Important

App-based numbers behave differently from regular mobile numbers, and knowing you are dealing with one changes how you should treat it.

• Fraud Prevention - Free, anonymous VoIP numbers are the number one tool for fake signups and verification bypass. Flagging them at onboarding stops abuse early.
• Deliverability - Some app numbers cannot receive standard SMS reliably, so carrier data prevents wasted sends.
• Security Screening - A VoIP line type on a "personal" number is a meaningful risk signal for transactions.
• Accurate Contact Data - Knowing which contacts are app numbers keeps databases honest.

Why Use Abstract API for TextNow Phone Number Lookup?

Abstract API provides a reliable and fast method for phone number validation, with accurate carrier and line type data for any number, including app-based VoIP numbers.

• Real-Time Data Access - Every lookup returns the most current carrier information available.
• Scalable Architecture - The system handles high volumes of requests without performance degradation.
• Simple Integration - Clear documentation lets developers add phone validation with minimal effort.
• Global Coverage - The API supports phone numbers from 190+ countries.

Looking for more phone intelligence tools? Try our phone number lookup tool, or explore the Phone Validation API for programmatic validation and carrier detection. You can also browse every carrier we cover in the phone number carrier checker directory.

Phone spam rarely travels alone. If you are also getting suspicious emails, run the sender's address through our free email risk checker, or use the Email Reputation API.

Frequently Asked Questions

Can I find out who owns a TextNow number?

Not through a carrier lookup, and generally not through any public tool. TextNow numbers are not tied to a registered subscriber the way a phone-company account is, so a lookup can confirm the number is an app-based VoIP number, but it cannot reveal the user's name. For harassment or fraud cases, law enforcement can request account records from TextNow directly.

Why does a phone number lookup show TextNow or Onvoy?

Lookups return the carrier of record for the number. TextNow numbers are provisioned through wholesale carrier partners, so results may show "TextNow", "Onvoy, LLC", or another wholesale label depending on the number block. All of them mean the same thing: an internet-based number from the TextNow service.

Is TextNow itself a scam?

No. TextNow is a legitimate app used by millions of people as a free or low-cost phone line. The service is just also attractive to scammers because its numbers are free and anonymous. The app is legitimate; any individual number deserves the same scrutiny as an unknown caller.

What line type do TextNow numbers appear as in the API response?

Non-fixed VoIP in almost all cases, under the line_type field. Non-fixed VoIP means the number is not tied to a physical address or SIM card, which is exactly why it is a strong risk signal for fraud screening at signup or checkout.

What number format is required when querying carrier data?

Submit numbers in international E.164 format with a leading + sign (for example, +15558675309 for a US number). This ensures consistent parsing across the 190+ countries the API supports.