Step-by-Step Guide: How to Use InstantNum to Receive SMS Codes

Many websites and apps require phone verification before allowing access. While this helps reduce spam, it can also expose your personal phone number to unwanted messages and privacy risks.

InstantNum offers a simple solution — receive SMS verification codes online using temporary phone numbers.

This guide walks you through exactly how to use InstantNum, step by step.

What Is InstantNum?

InstantNum is an online platform that provides public temporary phone numbers for receiving SMS messages. These numbers can be used for:

• One-time verifications

• App signups

• Testing SMS workflows

• Short-term access needs

No SIM card or registration is required.

Temporary phone numbers have many practical and responsible applications. If you want to explore them in detail, check out our guide on Top 10 Legitimate Use Cases for Temporary Phone Numbers.

Step 1: Visit the InstantNum Website

Open your browser and go to InstantNum.

You’ll see a list of available temporary phone numbers from different countries.

Step 2: Choose a Country

Select the country that best fits your needs.

Some websites only accept numbers from specific regions, so choosing the right country increases the chance of receiving the verification SMS successfully.

Step 3: Select a Temporary Phone Number

Click on a phone number from the list.

Each number has a public inbox where incoming SMS messages appear in real time.

Step 4: Enter the Number on the Website or App

Copy the selected phone number and paste it into the signup or verification form of the website or app you’re registering on.

Make sure to:

• Include the correct country code

• Enter the number exactly as shown

Step 5: Wait for the SMS Verification Code

Once the website sends the message:

• Return to the InstantNum inbox

• Wait a few seconds for the SMS to appear

Most messages arrive quickly, but delays can occasionally happen depending on the sender.

Step 6: Read and Copy the OTP Code

When the message appears:

• Open it in the inbox

• Copy the verification (OTP) code

• Paste it back into the website or app

Your verification should complete instantly.

Step 7: If the SMS Doesn’t Arrive

If you don’t receive the code:

• Refresh the inbox

• Try a different number

• Choose another country if available

• Request a new code from the website

Some platforms block shared or public numbers, which is normal.

Important Things to Know

Before using InstantNum, keep these points in mind:

• SMS inboxes are public — do not use for sensitive accounts

• Messages may be visible to others

• Numbers are temporary and may stop working at any time

InstantNum is best for non-critical, short-term verifications.

Best Practices for Safe Use

To get the best experience:

• Avoid using temporary numbers for banking or financial services

• Use them only for one-time or testing purposes

• Do not reuse numbers for long-term accounts

Responsible usage ensures privacy and security.

Why Choose InstantNum?

InstantNum offers:

• Free access to temporary numbers

• Multiple country options

• No registration required

• Fast SMS delivery

It’s a convenient tool for users who value privacy and simplicity.

Final Thoughts

Receiving SMS verification codes doesn’t have to mean sharing your personal phone number everywhere.

With InstantNum, you can receive SMS online quickly and responsibly — perfect for signups, testing, and short-term access.