As long as your domain stays the same, changing hosting companies or changing your IP address shouldn't affect your site's listing in Google News. We recommend following these steps when migrating a site to a new IP address:
- Bring a copy of your site up at the new IP address.
- Update your nameserver to point to the new IP address.
- Once you see search-engine spiders fetch pages from the new IP address (typically within 24-48 hours), it's safe to take down the copy of your site at the old IP address.