If you need an IP address to whitelist for Zoho CRM's IMAP or outbound email traffic, be aware that Zoho doesn't maintain a single, permanently fixed IP address for this purpose, and this is a genuinely common point of confusion.
Zoho operates its infrastructure across a range of IP addresses, and these can change over time as Zoho scales, adds capacity, or reorganises its data centres. Users repeatedly asking Zoho's community for a current IP list is itself a sign that any list published at a given moment tends to go stale, sometimes within a year or less, so treating a specific IP address you've found somewhere as permanently correct is risky.
If your question is instead about which server address to enter when connecting an external email account to Zoho CRM via IMAP, this depends entirely on your email provider, not on Zoho. Your email provider, such as Gmail, Outlook, or your own hosting provider, publishes its own IMAP server hostname and port, and that's what you'd enter during setup in Zoho CRM, rather than an IP address associated with Zoho itself.
If you're troubleshooting a failed IMAP connection rather than looking for an IP to whitelist, Zoho has published guidance on common error messages encountered while configuring IMAP in Zoho CRM and how to resolve them, which is generally a more productive starting point than chasing a specific IP address.