optimem.org
optimem.org is a live English-language website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2026-08-01 and last crawled it on 2026-08-05. It resolves to 104.21.75.130 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:
Optimem: Learn Anything Fast · Free Flashcards & Spaced Repetition
A distraction-free learning app that helps you truly remember what you study. Beautiful flashcards, spaced repetition, and optional AI — free without ads.
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2026-08-01 |
| Last crawled | 2026-08-05 |
| IPv4 | 104.21.75.130 |
| IPv6 | 2606:4700:3034::6815:4b82 |
| Network | AS13335 Cloudflare, Inc. · California |
| Mail (MX) | tuesday.mxrouting.net,tuesday-relay.mxrouting.net |
| Language | en |
| Server | cloudflare |