pysdr.org
pysdr.org is a live website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2026-07-05 and last crawled it on 2026-10-29. It resolves to 104.21.91.217 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:
PySDR: A Guide to SDR and DSP using Python
PySDR is a free online textbook (not a Python library!) that provides a gentle introduction to wireless communications and software-defined radio (SDR) using an abundance of diagrams, animations, and Python code examples.
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2026-07-05 |
| Last crawled | 2026-10-29 |
| IPv4 | 104.21.91.217 |
| IPv6 | 2606:4700:3033::ac43:b4c4 |
| Network | AS13335 Cloudflare, Inc. · United States |
| CNAME | pysdr.org |
| Mail (MX) | route1.mx.cloudflare.net.,route2.mx.cloudflare.net.,route3.mx.cloudflare.net. |
| Server | cloudflare |
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