holynski.org

.org crawl

First seen 2026-04-13 · Last seen 2026-05-15 · ok HTTP/1.1 200 905 ms crawled 2026-05-07

US · 185.199.111.153 · AS54113 Fastly, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: Aleksander Holynski
Description: Aleksander Holynski
Language: en

Technology

CDN: Fastly
Server: GitHub.com
CMS: Gatsby

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (4)

fonts.googleapis.com×3
ajax.googleapis.com×1
maxcdn.bootstrapcdn.com×1
www.googletagmanager.com×1

Social

Contact

Email

aleksander@holynski.org

Registration

Registrar

Squarespace Domains II LLC

Created

2015-06-07

Expires

2026-06-07 19 days left

Updated

2025-07-18

Name servers

ns-cloud-a4.googledomains.com
ns-cloud-a1.googledomains.com
ns-cloud-a3.googledomains.com
ns-cloud-a2.googledomains.com

DNS records live

NS

ns-cloud-a1.googledomains.com
ns-cloud-a2.googledomains.com
ns-cloud-a3.googledomains.com
ns-cloud-a4.googledomains.com

MX

10 mxa.mailgun.org
10 mxb.mailgun.org

TXT

google-site-verification=TEG-sAOXAoQrKh8ziu0C9NjwEYKAfeY7jBOy9udxRCM

Email authentication partial

SPF: v=spf1 include:mailgun.org ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-04-28 to 2026-07-27

Expires in 69 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://holynski.org/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy