by4si.com
by4si.com is a live English-language website hosted on Amazon.com, Inc. (AS16509) in the United States, served by Vercel. cl0q first saw it on 2026-08-17 and last crawled it on 2026-08-17. It resolves to 216.198.79.1 and has mail (MX) records set up. Its favicon is fingerprinted by SHA-256, so you can find every other site that serves the same icon.
How the site describes itself:
4SI Presence Key | One Key. Only yours.
Meet 4SI Presence Key: a personal physical trust interface designed to be worn, built to work offline and made useless to anyone but you.
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2026-08-17 |
| Last crawled | 2026-08-17 |
| IPv4 | 216.198.79.1 |
| Network | AS16509 Amazon.com, Inc. · California |
| Mail (MX) | by4si-com.mail.protection.outlook.com |
| Language | en |
| Server | Vercel |
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