Hi Ramya,
You could try the Google API for this. This one might not be free though. You can also use this page to find different options: https://rapidapi.com/collection/top-address-validation-api
Hope this helps
There is no such thing as a free lunch. Most API will cost you. We use this one for Dutch addresses: https://www.postcodeapi.nu/prijzen You can try it out for free though.
Regards,
Ronald