Phone carriers · Telnyx
Carrier guide
What Is a Telnyx Phone Number?
Telnyx at a glance
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One OCN, 073H, covers Telnyx blocks in all 50 states, DC, Puerto Rico and the US Virgin Islands. Trueguard returns a number in a Telnyx block as line.type voip, line.voipType nonFixed and line.carrierType cpaasVirtual.
Published by Trueguard. Facts about Telnyx read 14 November 2026.
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What Trueguard returns for a number in a Telnyx block
| Field | Value | Why |
|---|---|---|
line.type | voip (VoIP) | A number served over the internet. |
line.voipType | nonFixed (Non-fixed VoIP) | A number obtained online without a physical line. |
line.carrierType | cpaasVirtual (Virtual number provider (CPaaS)) | Served from a communications platform. |
line.smsCapable | true | Trueguard marks non-fixed VoIP numbers SMS capable. |
line.originalCarrier | Telnyx | The holder of the number block. A number in a Telnyx block reads Telnyx. |
line.currentCarrier | Telnyx | Telnyx when the number is not ported. For a US number that was ported, the carrier it moved to. |
risk.status | safe | Safe unless the number is disposable or premium rate. |
Telnyx in Trueguard's data
Telnyx blocks hold 0.70% of US numbers and 18.2% of the disposable numbers Trueguard saw in US blocks, about 26 times its share.
| Carrier | Numbers in blocks held | Share of US numbers | Area codes | Trueguard line type | Share of disposable numbers |
|---|---|---|---|---|---|
| Onvoy | 219,574,000 | 11.7% | 364 | Non-fixed VoIP | 36.4% |
| Bandwidth | 79,220,000 | 4.2% | 358 | Non-fixed VoIP | 26.5% |
| Telnyx | 13,067,000 | 0.70% | 338 | Non-fixed VoIP | 18.2% |
| Twilio | 342,000 | 0.018% | 188 | Non-fixed VoIP | 3 seen, too few to share |
Trueguard data, 14 November 2026: disposable numbers in US blocks, grouped by the carrier that holds the number block. Disposable here means a number listed on a public receive-SMS site that Trueguard monitors, in the last 180 days. Base: 11,314 disposable numbers in US blocks. Block sizes from NANPA data.
Get your free API keyAbout Telnyx
Who Telnyx is
Telnyx lists US local numbers from $1.00 a month. An additional $0.10 a month applies to add SMS and MMS to a number, and the price falls to $0.25 a month at 5,000 or more numbers.
Source: Telnyx pricing, numbers page, read 14 November 2026.
Telnyx says it runs its "private, global, multi-cloud IP network" and spans "over 190 countries".
Source: Telnyx about page, read 14 November 2026.
NANPA data lists the holder as "TELNYX LLC" under one OCN, 073H, in 338 area codes.
Source: NANPA number block data, as loaded by Trueguard, read 14 November 2026.
Why a Telnyx number calls or texts you
Developers buy Telnyx numbers by API to send codes, alerts and messages, and to place calls from software. A call or text from one comes from whoever holds the account, not from Telnyx itself.
Telnyx blocks also hold many disposable numbers. The figures on this page show how often, so you can set the rule on a signup.
Can you find out who owns it?
Trueguard shows the carrier and line type, not the owner. The platform that holds the number keeps the account details, and Trueguard does not do reverse phone lookup or caller names.
If a call or text bothers you, block the number on your phone, report the message to your own mobile carrier, and report abuse to the platform that holds the number.
Detect Telnyx numbers at signup
Trueguard returns a number in a Telnyx block as non-fixed VoIP, so the rule is to step up. A non-fixed number with receive-SMS history is blocked.
| The rule for numbers on Telnyx | Action |
|---|---|
line.type mobile, risk.status safe | Allow |
line.voipType fixed | Allow. line.smsCapable is false, so verify by another channel such as email. |
line.voipType nonFixed, no disposable history | Step up |
line.voipType unknown | Step up |
Any line with risk.previouslyDisposable true | Step up |
line.voipType nonFixed and risk.isDisposable true | Block |
line.voipType nonFixed and risk.previouslyDisposable true | Block |
Any line with risk.status risky (disposable or premium rate) | Block |
risk.status invalid | Reject and ask the user to re-enter |
Check for Telnyx numbers from your code
The same data comes from POST /v2/phone/validation, one number per request. 100 checks a month are free with no card. The Standard plan is $49.99 a month for 20,000 checks, then $0.0025 a check. Median response is under 500 ms.
curl -X POST https://api.trueguard.io/v2/phone/validation \
-H "X-API-KEY: $YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"phone":"+14159929960"}'Questions about Telnyx numbers.
Anything missing? Contact support or read the documentation.
What is a Telnyx number?
A number rented from Telnyx, a communications platform. Check one with Trueguard: line.originalCarrier reads Telnyx when Telnyx holds the number block, and line.carrierType reads cpaasVirtual. 5 checks a day are free here, and 100 a month with a free API key.
Why is a Telnyx number calling me?
Someone with a Telnyx account rented the number, often to send codes, alerts or messages from software. The carrier names the platform, not the sender.
Is Telnyx a VoIP carrier?
Trueguard returns numbers in Telnyx blocks as line.type voip with line.voipType nonFixed and line.carrierType cpaasVirtual, and marks them SMS capable.
Can I find who owns a Telnyx number?
Not with a carrier lookup. Trueguard returns carrier and line type, not the owner. The account details sit with the platform that holds the number, so report abuse to Telnyx or the app that sent the message.
Why does Telnyx have a high share of disposable numbers?
Per million numbers held, Trueguard saw 157.6 disposable numbers in Telnyx blocks and 18.8 in Onvoy blocks (14 November 2026). Telnyx lists US local numbers from $1.00 a month, plus $0.10 for SMS and MMS (Telnyx pricing, read 14 November 2026).
Can I block Telnyx numbers at signup?
Blocking every Telnyx number also blocks real users. The Trueguard rule steps up non-fixed VoIP and blocks a non-fixed number listed on a receive-SMS site in the last 180 days. The last 30 days sets risk.isDisposable and status risky. 31 to 180 days sets risk.previouslyDisposable.
Is a Telnyx number a scam?
Not by itself. Telnyx rents numbers to many customers. Judge the message, and never share a code you did not request.
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