indexo.dev

250bpm.com

.com crawl

First seen 2026-04-12 · Last seen 2026-05-05 · ok HTTP/1.1 200 1433 ms crawled 2026-05-05

US · 3.231.35.217 · AS14618 Amazon.com, Inc.

Reputation 100/100

sector tech type blog

HTML metadata

Title
250bpm | Martin Sustrik | Substack
Description
Martin Sustrik's personal blog. Click to read 250bpm, by Martin Sustrik, a Substack publication with hundreds of subscribers.
Language
en
Canonical
https://www.250bpm.com/
Feeds

Open Graph

url
https://www.250bpm.com/
title
250bpm | Martin Sustrik | Substack
description
Martin Sustrik's personal blog. Click to read 250bpm, by Martin Sustrik, a Substack publication with hundreds of subscribers.

Technology

CDN
Cloudflare
CMS
Gatsby
Analytics
  • Cloudflare Insights
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • substackcdn.com×252
  • fonts.gstatic.com×1
  • js.sentry-cdn.com×1
  • static.cloudflareinsights.com×1

Registration

Registrar
Gandi SAS
Created
2009-10-25
Expires
2028-10-25 889 days left
Updated
2025-10-21
Name servers
  • ns1.he.net
  • ns2.he.net
  • ns3.he.net
  • ns4.he.net
  • ns5.he.net

DNS records live

NS
  • ns1.he.net
  • ns2.he.net
  • ns3.he.net
  • ns4.he.net
  • ns5.he.net
MX
  • 10 smtp.lucina.net
TXT
  • v=spf1 redirect=_spf.lucina.net

Certificate (current)

E8
from 2026-03-29 to 2026-06-27
Expires in 39 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://www.250bpm.com/

present
  • strict-transport-security
  • content-security-policy
findings
  • CSP uses wildcard sources
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
content-security-policy
frame-ancestors 'self' https://*.substack.com https://substack.com
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (7)

Linked from (1)