#dns

Subdomain Takeover: A Real Bug I Found👾️

Introduction:

I Created a MongoDB Private Endpoint. Why Does DNS Just Magically Work?

As engineers, we’re trained to celebrate when something works.

Attack and Security Series: Episode 3

DNS Spoofing: When the Internet Sends You to the Wrong House 🌐🎭

Block Unwanted Domains on Mac

Apps and websites can contact more domains than you expect.

🔍 Microsoft AD-Integrated DNS’de Gizli Bir Davranış: Neden Aynı DNS Kaydı Eski Harf Formatıyla…

💡 Geçtiğimiz günlerde VMware Cloud Foundation (VCF) kurulumu sırasında oldukça ilginç bir DNS davranışıyla karşılaştık.

The Best DNS Products Don’t Add Features. They Remove Operational Risk.

If you look at the postmortems of the most damaging DNS outages of the last decade, a pattern emerges that should make every product leader…

Your email passes SPF and DKIM but still fails DMARC. Here’s why

You set up SPF. You set up DKIM. You send a test message and both come back pass. Then your DMARC reports show fail, or a receiver…

7 stealthy ways threat actors hide in network traffic

NetworkTigers examines how threat actors hide in network traffic using stealth tactics that evade detection and mimic legitimate activity…

CKA-24-CoreDNS in Kubernetes: A Practical Deep Dive

Explore CoreDNS configuration, Kubernetes DNS records, and the steps to diagnose name-resolution failures.

CKA-23-Service Discovery in Kubernetes

Learn Kubernetes service discovery patterns and how workloads find each other reliably inside a cluster.

DDoS Protection Layers Explained: From DNS to WAF

It’s 2026 and DDoS attacks have become more advanced, common and also specific as never before! Be it AI training clusters, hightraffic…

Understanding DNS resolution in Kubernetes

In this article, we will explain how DNS resolution works in a Kubernetes cluster.

What Is Dynamic DNS (DDNS)? The Easiest Way to Keep Your Home Server Online

Ever wondered how people access their home servers, security cameras, or gaming servers even when their internet provider keeps changing…

The DNS Outage That Wasn’t a DNS Problem: A Troubleshooting Story

There’s a particular kind of frustration that comes with an issue affecting only some users, on some networks, for reasons nobody can…

Ping Worked, DNS Didn’t: A Linux Troubleshooting Story That Changed How I Debug Network Issues

A few days ago, I encountered a networking issue that reminded me why troubleshooting requires understanding how things work under the hood…

Introductory Networking — TryHackMe

Part of my Cyber Security Internship at Cyber Leelawat

Why WHOIS Lookup Still Matters in 2026 (And the Tool I Built to Make It Easier)

Every website starts with a domain name.

Welcome Tucows Domains as the newest Bronze Member to DNS-OARC

We’re pleased to welcome Tucows Domains as a new Bronze Tier member of DNS-OARC.

LINKSPREED ANNOUNCES UPCOMING LAUNCH OF LINKSPREED NAME SERVICE (LNS) TO CHALLENGE ICANN’S MONOPOLY

ALBUQUERQUE, NM — June 28, 2026 — LINKSPREED, the pioneer in next-generation decentralized web architectures, today announced the upcoming…

When the Signature No Longer Fits the Packet

A new quantum executive order quietly sets a deadline that breaks DNSSEC, not just TLS.

Somthing I wish I could knew before about DNS on Azure

DNS resolution on Azure confused me early on. There are multiple layers, and if you don’t know the priority order, troubleshooting becomes…

Brightspace email authentication: how to set up DMARC, DKIM, and SPF

Brightspace email should pass DMARC before course notifications, enrollment messages, announcements, and password workflows rely on a…

Why Put Agent Discovery in DNS (Not Another Registry)

Agents and MCP servers are multiplying fast. Each one needs an endpoint, and right now most of us are wiring those endpoints by hand…

I Built My Own Mini Internet to Understand How DNS Really Works

I’ve always been curious about what actually happens when we type a domain like google.com into a browser. It looks simple, but behind it…

🌍 বিদেশে থেকেও দেশের সিম সবসময় চালু রাখতে চান?

Should you change DMARC from p=none to p=reject?

Move to reject only after reports, sender ownership, SPF or DKIM alignment, and staged enforcement show what will keep working.

No Registry: A Marketing Push for PKDNS

Domain Names Without a Kill Switch

LINKSPREED LLC Announces Strategic Integration with OpenSRS to Deliver Seamless Web2 Registrations…

ALBUQUERQUE, NM — June 16, 2026 — LINKSPREED LLC, a deep-tech infrastructure architect building the next-generation decentralized internet…

Best Bulk Domain Datasets in 2026: WHOIS, RDAP & Zone-File Sources Compared

If you need bulk domain data in 2026, the right source depends on what you’re optimizing for. For official zone files, ICANN’s CZDS is the…

Spamhaus CERT Insight Portal: how botnet C&C enrichment helps email teams

Spamhaus has updated its free CERT Insight Portal with richer botnet command and control reporting, JSON/API access, and broader alert…

Understanding DNS

Domain Name System(DNS) is often called the phone book of the internet, this is because like a phone book, which is an equivalent of your…

DMARC p=reject policy: how to avoid deliverability issues

Move to enforcement with sender inventory, aligned DKIM or SPF, staged policy gates, and rollback rules before legitimate mail starts…

Changed Your DNS But Your Website Isn't Live Yet? Here's the Fix

DNS Bozuk Demeden Önce

Evet huncarca birşeye bozuk demeden önce neyin ne olduğunu öğrenmekte fayda var.

Top 12 Playit.gg Alternatives for Low-Latency Game Server Hosting in 2026

Multiplayer gaming has come a long way, and so have the tools that keep your servers accessible. Playit.gg has served gamers well as a…

A Developer Built a VPN That Hides Internet Traffic Inside DNS Queries

Firewalls Can’t Stop This. Here’s Why. Most VPNs fail for a simple reason: Network administrators know exactly what to block.

The Internet Walks on a Pegleg Named Cloudflare

Part of the series “Obscure Peglegs of Modern Society” — the load-bearing infrastructure nobody voted for and almost no one can name.

RDAP vs WHOIS for OSINT: Why You Should Already Be Using the Modern Protocol

First: Access this Article for free without membership requirement here:

DMARC tags, explained for operators

What each DMARC tag controls, which ones matter first, and how to move from monitoring to enforcement.

DNS Found Google’s IP… So Why Isn’t the Website Loading Yet?

Every day, millions of people type website names like google.com, youtube.com, and microsoft.com into their browsers.

What Happens When You Type a URL?

Hello everyone, Did you think about what will happen when we hit a URL?

What happens when you type google.com in your browser and press Enter

Everyone has visited a URL to get to a website. That’s how you got to this blog. But how is that writing “medium.com/some_id” gets you to…

DMARC record and policy examples that move safely to enforcement

Start with monitoring, fix SPF and DKIM alignment, then move through quarantine before reject.

How DNS Actually Works: The System That Turns Names Into IPs

The core problem DNS solves

How DNS Works: What Happens When You Type google.com?

A beginner-friendly guide to DNS, Root Servers, TLD Servers, and the hidden journey behind every website visit.

DNS Explained for Software Engineers: From Domain Names to Distributed Systems

The Engineering Guide to Latency, High Availability, and Zero-Downtime Infrastructure

Sekolah Negeri, Nasibmu Kini

DULU, di era tahun 2000-an ke belakang, lembaga pendidikan sekolah dasar negeri (SDN) sangat mendominasi. Saking favoritnya, hampir tidak…

What Happens When You Type a URL? Web Architecture Explained Simply

Learn how browsers, DNS, servers, and networks work together to deliver a webpage to your screen

Dig Dug

https://tryhackme.com/room/digdug

Best DNS for Gaming in 2026: Lower Ping, Better Connections

Most gamers spend hours tweaking GPU settings but overlook DNS — the network layer that resolves every server address before a game session…