What powers hdsdr.de?
Last seen Aug 2026 · 1 technologies across 1 categories
Web servers
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| sdr radio software | #5 | 210 |
| hdsdr | #1 | 180 |
| sdr definition | #51 | 120 |
| software defined radio software windows | #1 | 97 |
| sdr | #44 | 47 |
| free software defined radio | #1 | 21 |
| hdsdr download | #1 | 15 |
| sdr radio windows | #6 | 11 |
| sdr free software | #2 | 11 |
| free sdr software | #2 | 11 |
| sdr radio | #25 | 5 |
| software defined radio software download | #3 | 5 |
| software defined radio download | #3 | 5 |
| sdr software free | #2 | 3 |
| sdr radio software download | #4 | 3 |
| sdr program download | #4 | 3 |
| sdr# software | #5 | 2 |
| sdr radio online | #51 | 2 |
| sdr ham radio | #16 | 2 |
| sdr for windows | #4 | 2 |
| software defined radio online | #54 | 2 |
| online sdr | #46 | 2 |
| best sdr software for windows | #8 | 1 |
| windows sdr software | #3 | 1 |
| usb software defined radio | #17 | 1 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 82% desktop
- 18% phone
United Kingdom
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.27 / 10 · ranked #221,720 of all domains
147 referring domains · OpenPageRank
Search traffic
770 est. monthly organic visits (US)
79 keywords in Google's top 30
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.0 MB · 10 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ONE-NETWORK (5.44.111.104)
- DNS: alfahosting.info
- Email: no MX record returned
- Email security: SPF (soft fail)
- SSL: Let's Encrypt, RSA 4096, wildcard, expires Sep 2026
- Common Crawl link graph: rank 1,886,657, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| hdsdr.de | 1 |
| www.hdsdr.de | 1 |