Domain and hosting records of a company are often more complete than its corporate register entry, and the year a shell company moved between registrars is often a more precise date than any filing the register itself carries.
A reader trying to date the true operational history of a private company whose registry filings are thin, whose accounts are dormant, and whose website has been redesigned twice, will find a fuller picture in the WHOIS record (the public registration data for a domain), the historical hosting configuration, archive.org captures of prior versions of the site, and the mail-server records that describe where the company's email has been hosted over time.
Historical WHOIS databases retain snapshots of registrant details from before privacy protection became widespread, and the earliest snapshot often names an individual or an entity that later filings do not. Passive DNS records describe the sequence of IP addresses a domain has resolved to over years. Archive captures of the about and team pages disclose personnel and partnerships that current versions of the site have removed.
Pull the internet history in parallel with the corporate history. A company whose website is older than its filings is describing a decision the filings will not describe on their own.