What powers ferd.ca?

Last seen Aug 2026 · 2 technologies across 2 categories

Miscellaneous

RSS
since Dec 2022

Web servers

Apache HTTP Server
since Jan 2019

AI Crawlers

Blocks 15 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.

Training crawlers

  • Applebot-Extended Blocked
  • Bytespider Blocked
  • CCBot Blocked
  • ClaudeBot Blocked
  • cohere-training-data-crawler Blocked
  • Diffbot Blocked
  • FacebookBot Blocked
  • GPTBot Blocked
  • img2dataset Blocked
  • meta-externalagent Blocked
  • Webzio-Extended Blocked

Search and AI assistants

  • Amazonbot Blocked
  • PetalBot Blocked
  • YouBot Blocked

User-request fetchers

  • ChatGPT-User Blocked

The other 18 AI crawlers we track are not mentioned and stay allowed by default.

  • robots.txt found
  • llms.txt not found
  • ai.txt not found

See who blocks each AI crawler across the web

Top search keywords

KeywordPositionEst. monthly visits
awk #8 120
erlangs #16 28
foucault discipline and punish #47 11
work as imagined vs work as done #2 8
unaccountability machine #8 5
ai art and its impact on artists #7 5
irony of automation #5 4
unaccountability book #8 3
erlang syntax #4 3
code for fun #39 2
tyranny of structurelessness #13 2
what does scad stand for #25 2
male centric #12 2
male-centric #11 2
three thinking performance modes #8 1
what is erlang language #79 1
what is erlang #72 1
what is erlang #32 1
operability definition #68 1
foucault's disciplinary power #13 1
best book distributed systems #62 0
which accident theory is considered too simplistic and rarely used #34 0
which accident theory divides into three phases #27 0
work as intended #27 0
zipper data structure #73 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

15 of 33 AI crawlers blocked

Full breakdown

Audience

  • 54% phone
  • 46% desktop
  • United States

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

6.24 / 10 · ranked #93,606 of all domains

243 referring domains · OpenPageRank

Search traffic

200 est. monthly organic visits (US)

73 keywords in Google's top 30

Core Web Vitals

LCP1.4 s
CLS0
TTFB800 ms

Real user p75, Chrome UX Report, Aug 2026.

Page

  • Language: English
  • Weight: 0.3 MB · 8 requests

Homepage as crawled by the HTTP Archive, Sep 2026.

Infrastructure

  • Hosted on GRIDFURY-AS (208.94.116.79, IPv6)
  • DNS: nearlyfreespeech.net
  • Email: Fastmail
  • Email security: no SPF record, no DMARC record
  • SSL: Let's Encrypt, ECDSA P384, expires Nov 2026
  • Common Crawl link graph: rank 1,185,491

DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted

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