map.lightningmaps.org is a real-time lightning tracking site that loads quickly and uses a valid SSL certificate. There are no signs of malware or shady activity. The site blocks automated checks, but that doesn't affect regular visitors.
Most lightning map services are hobby projects or open data tools, not commercial businesses. That means it's normal not to find an about page, privacy policy, or company disclosures. The lack of a Wayback Machine history suggests this domain is relatively new or has never been archived — not a warning sign by itself for a niche tool.
If you're just checking lightning strikes in your area, the site should work fine. There is no reason to suspect it's a scam or fake based on the available evidence. Just don't expect a polished business site with detailed contact info.