Lost iPhone 6S

Hi,

I have lost my iPhone sometime ago. Looked everywhere. Not sure where it could've gone. It was insured. But I don't think I ever registered it on iTunes/iCloud, being mainly an android user and not very techy with Apple products.

And the phone didn't have a SIM card as it was meant to be for my kids usage mainly.

Now the insurance company want proof that the phone was actually with us. I've shown them proof of purchase. But they might not uphold the insurance terms and we may not get a replacement.

I would like to know, is there a way for me to track it with with just the IMEI number or any other means to see whether its still in the house or not?

Thanks

Jehan