What is PSTN replacement?

PSTN replacement refers to the ability to offer fully-featured phone services in a specific region or area. Specific telephony services include inbound and outbound local calling; geographic, toll-free, and national number resources; emergency service-enabled numbers; guaranteed Calling Line Identity (CLI) passthrough; dual-tone multi-frequency (DTMF) signaling and number portability.

Can I port international numbers to Telnyx?

Yes, you can port international numbers to Telnyx. Users can set up and manage their ports through the Mission Control Portal or via API.

Global Numbers

Scaling your business doesn't have to be hard. Search and provision local, national and toll-free DIDs in the portal or via API.

Search in the portal

Looking for specific numbers? Ask our experts

7M+Active phone numbers managed

130+Countries of local calling

24/7Support

WHY TELNYX

Why leading companies choose Telnyx phone numbers

Global reach
Local, national, toll-free, and short code numbers across 130+ countries. One API to search, order, and manage numbers worldwide.
Instant provisioning via API
Search, reserve, and purchase phone numbers programmatically with the Numbers API. Go from search to active number in seconds.
Cost efficient pricing
For one dollar, your application can programmatically acquire phone numbers. As a licensed carrier in 30+ countries, Telnyx gives you direct access to millions of numbers with no middleman markups.

FEATURES

Feature rich phone numbers at your fingertips

Connect around the world through voice, messaging, emergency, and fax-enabled numbers.

PSTN replacement numbers
PSTN replacement in 50+ countries with geographic, toll-free, mobile, and national numbers. Access a deep inventory of local DIDs to expand your business to new markets quickly.
Automated phone number porting
[Automated porting](https://telnyx.com/products/number-porting "Number Porting") makes bringing your numbers to Telnyx a breeze. Our APIs and portal give you complete control and transparency over the number porting process.
Multi-function phone numbers
One number for voice, SMS, MMS, and fax. Enable calling and messaging on the same number without additional infrastructure.
10DLC registration and compliance
Built-in 10DLC brand and campaign registration, automated opt-out handling, and throughput management. Stay compliant with A2P 10DLC carrier rules without extra tools.

“We use Telnyx to purchase and assign DIDs to our Genesys Cloud phone system. The ease of use allows our Tier 2 team to perform the tasks and reduces man-hours to obtain the DID itself.”

G2 Review

HOW IT WORKS

NUMBERS API FOR DEVELOPERS

Search and buy numbers in minutes

With Telnyx REST APIs and SDKs in 5+ languages, you can search, reserve, and purchase phone numbers globally with 24/7 free support.

Search Numbers cURL

curl -X GET "https://api.telnyx.com/v2/available_phone_numbers?filter[country_code]=US&filter[phone_number_type]=local&filter[limit]=5" \
  -H "Authorization: Bearer YOUR_API_KEY"

Search Numbers Python

from telnyx import Telnyx
import os

client = Telnyx(api_key=os.environ.get("TELNYX_API_KEY"))

numbers = client.available_phone_numbers.list(
    filter_country_code="US",
    filter_phone_number_type="local",
    filter_limit=5
)

for n in numbers.data:
    print(n.phone_number)

Search Numbers Node.js

import Telnyx from 'telnyx';

const client = new Telnyx({ apiKey: process.env.TELNYX_API_KEY });

const numbers = await client.availablePhoneNumbers.list({
  'filter[country_code]': 'US',
  'filter[phone_number_type]': 'local',
  'filter[limit]': 5
});

console.log(numbers.data);

Search Numbers Ruby

require "telnyx"

client = Telnyx::Client.new(api_key: ENV["TELNYX_API_KEY"])

numbers = client.available_phone_numbers.list(
  filter: { country_code: "US", phone_number_type: "local", limit: 5 }
)

numbers.data.each { |n| puts n.phone_number }

Search Numbers .NET

using Telnyx;

TelnyxConfiguration.SetApiKey(Environment.GetEnvironmentVariable("TELNYX_API_KEY"));

var service = new AvailablePhoneNumberService();
var numbers = await service.ListAsync(new AvailablePhoneNumberListOptions {
    FilterCountryCode = "US",
    FilterPhoneNumberType = "local",
    FilterLimit = 5
});

foreach (var n in numbers.Data)
    Console.WriteLine(n.PhoneNumber);

PRICING

Business number pricing

Pay only for the numbers you need month-to-month: no contracts required.

Starting at:

$1.00

per month

See pricing

PRODUCTS

Build with Phone Numbers

Sign up and start building

Talk to an Expert Sign up

FAQ

Local numbers are numbers that can be identified by an area code in a specific region–such as a city or state. Local numbers can help businesses engage with customers in specific areas.

Resources, Docs, Support

Phone Numbers hub

Getting started with Telnyx Phone Number APIs | Telnyx
Introduction
Read more
Number Search tutorial | Telnyx
Tutorial for Number Search
Read more
Number Orders tutorial | Telnyx
Tutorial for Number Orders
Read more
Getting started with Telnyx Porting API | Telnyx
Introduction
Read more
List available phone numbers API | Telnyx
List available phone numbers
Read more
Create a number order API | Telnyx
Creates a phone number order.
Read more
List phone numbers API | Telnyx
List phone numbers
Read more
Retrieve a phone number API | Telnyx
Retrieve a phone number
Read more
Update a phone number API | Telnyx
Update a phone number
Read more
Telnyx Blog | CPaas & UCaaS Resources
Find data-driven research, comprehensive guides and all things SIP trunking, voice and SMS APIs, wireless and more.
Read more
Telnyx Blog | CPaas & UCaaS Resources - Page 2
Page 2 - Find data-driven research, comprehensive guides and all things SIP trunking, voice and SMS APIs, wireless and more.
Read more
Purchase a phone number with Telnyx
Learn how to quickly purchase a phone number with Telnyx Mission Control. It's fast, and easy!
Read more
What is a VoIP number? Guide to voice over IP numbers
Unlike traditional phone numbers, a VoIP number is assigned to a user, not a specific phone line. Here, we'll take a closer look at how VoIP numbers work.
Read more
Types of phone numbers and their business use cases
Discover different types of phone numbers, their benefits, and which number is the best fit for your use case.
Read more
5 Advanced Phone Number Searching Examples with Telnyx
Telnyx offers the most powerful number search and purchasing APIs and portals on the market. Check out our demonstration of advanced searches.
Read more
Automated International Number Search and Order
Streamline your international number search and order process with our latest API.
Read more
FastPort® Makes Number Porting Simple
Experience hassle-free porting on a global scale via our easy-to-use portal and API. Watch this short video to see FastPort® in action.
Read more
FastPortⓇ - Number Porting On Demand
Moving a phone number to a different network has historically been a manual, often long and frustrating process, with users at the mercy of carriers.
Read more
8 global number porting issues that slow you down
Avoid delays in global number porting. Learn about common issues and best practices for a smooth, hassle-free transfer.
Read more
The best Bandwidth alternative - Telnyx
Looking for a Bandwidth alternative? Compare Telnyx vs. Bandwidth on reliability, pricing, and support. See why Telnyx is the top choice.
Read more
#1 Plivo Alternative - Telnyx vs Plivo
The top Plivo alternative. Find out why businesses are choosing Telnyx as the better Plivo alternative for CPaaS.
Read more
Phone Numbers | Telnyx Help Center
Detailed info about phone numbers, ordering, and the numbering team. Start building on Telnyx today.
Read more
Requesting Numbers | Telnyx Help Center
This article explains the process for requesting numbers of all kinds which may be unavailable to purchase from the Mission Control Portal
Read more
Search and Buy Numbers | Telnyx Help Center
This article describers to process of obtaining numbers through Telnyx
Read more
DID Numbers that Telnyx Offers | Telnyx Help Center
In this article we will explain the types of DID numbers that Telnyx offers.
Read more
Global Number Types | Telnyx Help Center
Here you will find an explanation of all the different number types that Telnyx offers: local, toll free & International.
Read more
International Coverage | Telnyx Help Center
International numbers - Learn about proposed numbers for different countries (in ISO 2 and ISO 3).
Read more
Embedded Number Search (Provisioning)
Build number searching into your application with ease using Telnyx. Our number lookup API is fast, and priced competitively.
Read more
Embedded Porting | Build with Telnyx
With embedded porting transferring phone numbers from another provider to Telnyx is quick, simple, and effective.
Read more

Global Numbers

7M+Active phone numbers managed

130+Countries of local calling

24/7Support

Global reach

Instant provisioning via API

Cost efficient pricing

Feature rich phone numbers at your fingertips

Set up a portal account

Search for your perfect number

Connect your phone number for use

Launch your communications

Search and buy numbers in minutes

Business number pricing

Toll-Free Numbers

10DLC Registration

Voice API

Number Porting

Sign up and start building

FAQ

What is a local number?

What is PSTN replacement?

Can I port international numbers to Telnyx?

Getting started with Telnyx Phone Number APIs | Telnyx

Number Search tutorial | Telnyx

Number Orders tutorial | Telnyx

Getting started with Telnyx Porting API | Telnyx

List available phone numbers API | Telnyx

Create a number order API | Telnyx

List phone numbers API | Telnyx

Retrieve a phone number API | Telnyx

Update a phone number API | Telnyx

Telnyx Blog | CPaas & UCaaS Resources

Telnyx Blog | CPaas & UCaaS Resources - Page 2

Purchase a phone number with Telnyx

What is a VoIP number? Guide to voice over IP numbers

Types of phone numbers and their business use cases

5 Advanced Phone Number Searching Examples with Telnyx

Automated International Number Search and Order

FastPort® Makes Number Porting Simple

FastPortⓇ - Number Porting On Demand

8 global number porting issues that slow you down

The best Bandwidth alternative - Telnyx

#1 Plivo Alternative - Telnyx vs Plivo

Phone Numbers | Telnyx Help Center

Requesting Numbers | Telnyx Help Center

Search and Buy Numbers | Telnyx Help Center

DID Numbers that Telnyx Offers | Telnyx Help Center

Global Number Types | Telnyx Help Center

International Coverage | Telnyx Help Center

Embedded Number Search (Provisioning)

Embedded Porting | Build with Telnyx