It's common for an established web brand to end up associated with more than one domain extension over time — sometimes through official expansion, sometimes because unrelated parties register similar-sounding addresses hoping to catch stray traffic. Football fixture platforms are no exception, and names like Soccer100 attract this kind of domain variation given how much search interest the term generates.
For fans, the practical concern isn't really which extension is "correct" in some abstract sense, but which specific address they're actually using to check schedules or account information, if any is required. The safest approach is the same one that applies to any brand with multiple domain variants: bookmark the specific address you've verified is legitimate, rather than re-searching the brand name and clicking whichever result appears first.
This matters more for football fixture sites than it might for some other categories, simply because of how much traffic spikes around major matchdays. High-traffic search terms are attractive targets for domains looking to capture overflow clicks, whether through parked pages, ad-heavy content, or in less benign cases, attempts to mimic a trusted source closely enough to fool a quick glance.
None of this should be read as an accusation against any particular domain — plenty of variations exist for entirely mundane reasons, including brand owners securing multiple extensions defensively, or old domains that simply never got updated. But from a fan's perspective, the practical habit worth building is the same regardless: know your trusted source by its exact address, not just its name, and be a little more careful before entering any information on a domain you haven't specifically verified.
As football content platforms continue to multiply across different extensions and regional variants, this kind of basic domain awareness is likely to matter more, not less, for fans trying to find reliable fixture information without getting sidetracked.
A few concrete checks help here beyond just noting the domain extension. Looking for a secured connection, checking whether the site has a reasonable amount of general information about itself (an about page, contact details, clear policies) rather than being a bare-bones page focused entirely on ads, and being cautious of sites that immediately push a download or app install are all reasonable signals. None of these checks are foolproof on their own, but together they give a fan a reasonably quick way to judge whether a domain variant is worth trusting before spending much time on it.