What powers philzimmermann.com?
Last seen Jun 2026 · 1 technologies across 1 categories
Web servers
Apache HTTP Server
since Oct 2021
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| philip zimmermann | #2 | 59 |
| pgp word list | #2 | 6 |
| base32 | #33 | 2 |
| phil zimmermann | #71 | 2 |
| phil zimmermann | #51 | 2 |
| philip zimmermann | #72 | 1 |
| philip zimmermann | #38 | 1 |
| base32 characters | #35 | 0 |
| pgp wiki | #62 | 0 |
| pgp corp | #23 | 0 |
| pgp code | #33 | 0 |
| cypherpunks mailing list before:2010 | #47 | 0 |
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 robots.txt, all AI crawlers allowed
Open Page Rank
5.93 / 10 · ranked #114,520 of all domains
284 referring domains · OpenPageRank
Search traffic
73 est. monthly organic visits (US)
12 keywords in Google's top 30
Infrastructure
- Hosted on SWCP-AS (216.184.2.32)
- DNS: swcp.com
- Email: philzimmermann.com
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 459,208, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| philzimmermann.com | 1 |
| www.philzimmermann.com | 1 |