If you're switching to a different DNS provider or hosting service, you’ll need to update the nameservers (NS records)for your domain in Namecheap.

This guide explains how to update your domain’s nameservers quickly and safely.

Prerequisites  

• Access to your Namecheap account

• The new nameservers (usually provided by your DNS/hosting/CDN provider)

Steps to Change Nameservers on Namecheap  

1. Log in to Namecheap  

• Go to https://www.namecheap.com/

• Click Sign In and enter your credentials

2. Go to the Domain List  

• Once logged in, click on "Domain List" from the left-hand menu.

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3. Find and Select Your Domain  

• Locate the domain you want to update

• Click the "Manage" button next to it

4. Update Nameservers  

• In the "Domain" tab, scroll to the "Nameservers" section

• From the dropdown, choose:

• Custom DNS — if you're entering nameservers manually

• (Other options like Namecheap Basic DNS or third-party DNS might also be shown)

5. Enter Your New Nameservers  

• Input the new NS values provided by your service

• Example:

• delhi.ns.vergedns.com

• goa.ns.vergedns.com

• Click the green ✅ check icon to save the changes

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Propagation Time  

DNS changes usually begin updating within minutes, but full propagation may take up to 24–48 hours globally. 

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Important Tips  

• Double-check your DNS records are already set up at the new provider before switching NS.

• During propagation, you may see intermittent website or email behavior if configurations are incomplete.

• If using a CDN like VergeCloud, they will provide you with their own NS values to enter.

Example  

You are moving DNS management to VergeCloud, and they give you:

• delhi.ns.vergedns.com

• goa.ns.vergedns.com

In Namecheap:

• Select "Custom DNS"

• Enter those two nameservers

• Click the ✅ checkmark to save

Refer to below link for more details.

https://www.namecheap.com/support/knowledgebase/article.aspx/767/10/how-to-change-dns-for-a-domain/