adamsitnik.com

.com crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 384 ms crawled 2026-06-01

US · 185.199.108.153 · AS54113 Fastly, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title

Adam Sitnik – .NET Performance and Reliability

Description

.NET Performance and Reliability

Feeds

Adam Sitnik - .NET Performance and Reliability RSS

Open Graph

description: .NET Performance and Reliability

Technology

CDN: Fastly
Server: GitHub.com

Social widgets

YouTube Embed

Third-party hosts loaded (4)

avatars2.githubusercontent.com×1
cdnjs.cloudflare.com×1
user-images.githubusercontent.com×1
www.youtube.com×1

Social

Registration

Registrar

NetArt Registrar Sp. z o.o.

Created

2017-01-15

Expires

2027-01-15 226 days left

Updated

2025-12-22

Name servers

ns1.nazwa.pl
ns2.nazwa.pl
ns3.nazwa.pl

DNS records live

NS

ns1.nazwa.pl
ns2.nazwa.pl
ns3.nazwa.pl

TXT

Show 8 TXT records
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Email authentication no MX

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-04-30 to 2026-07-29

Expires in 56 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://adamsitnik.com/

findings

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

Links to (11)

Linked from (2)

xaml.dev×1
sharpgis.net×1