This site is clearly a scam. As others have said, its just random generated names and not a legitimate database. The only purpose for doing this that I can think of is so they can load malicious code into your computer.
D H.'s review of Tel2name earned 17 Very Helpful votes
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Empty.
This entire site is randomly generated. Pull up a page (e.g. https://tel2na.me/719-277) and...
None of the names they give for the phone numbers are real as far as I can tell. Endless BS...