dns-monitoring

DNS-BLM checks if your domains are flagged as malicious on blocklists.

Open, vendor-neutral specification for portable synthetic monitoring checks. Define checks once, run anywhere. Supports HTTP, TCP, DNS, TLS, domain, and browser automation checks. Apache 2.0 licensed.

High-performance self-hosted uptime monitoring built in Rust. Fast, lightweight, and designed for full ownership of your infrastructure.

DNS Monitor is a customizable tool that detects changes to critical DNS records such as MX, SPF, DKIM, and DMARC, providing instant notifications via Pushover and Telegram to help prevent unauthorized modifications and enhance both email and general DNS security.

Self-hosted internet uptime monitor. Logs every connection drop with its cause, duration, and exact timestamp; live dashboard, Discord alerts, and ISP-ready reports. Pure Python, zero dependencies, perfect for a Raspberry Pi.

GitHub App that watches custom domains on GitHub Pages: DNS, CAA and TLS checks on every push, and an issue when the domain breaks. By CustomDomain™.

Home Assistant integration for dnsdist

Self-hosted companion dashboard for Pi-hole: per-device DNS visibility, proactive alerts (new devices, vendors, domains, quiet clients), and analysis tools (live stream, blocklist simulator, heatmaps, domain fan-out) that Pi-hole's own UI doesn't have.

Continuous attack-surface change monitor for bug bounty & security teams — diffs your authorized targets on a schedule and alerts the moment a new subdomain, live host, subdomain-takeover risk, or DNS change appears. Single Go binary; runs free in a GitHub Action.

ENG.A Python-based script that monitors AdGuardHome DNS queries and sends notifications to a Discord webhook./SVK: Skript v Pythone, ktorý sleduje DNS požiadavky v AdGuardHome a odosiela upozornenia na Discord webhook.

Detect DNS record drift across resolvers and over time, distinguishing propagation lag from genuine misconfiguration.

Discord bot for large-scale website monitoring. Tracks content changes, DNS records, IP addresses, response times, status codes, and captures screenshots. Sends real-time alerts and supports concurrent monitoring of 100+ sites efficiently.

Self-hosted DNS propagation checker and monitor: query 124 global resolvers, trace delegation, and get alerts via Shoutrrr or WhatsApp

Dns queries and responses with scapy

Hosted MCP server for Sentinel uptime monitoring: connect Claude or any MCP client to your monitors, SSL/DNS/domain checks, and incidents

Internet & DNS connection monitor with informative web view and alerts via Pushover

Automated PBN monitoring script using Serpmax API with Telegram alerts. Checks website audit score, SSL validity, and critical major issues. Lightweight Python automation script for sysadmins and SEO experts. Supports cron and Windows Task Scheduler.

Prevent client-discovered DNS, email and certificate outages with runbooks and an agent skill from DNS Notify.

Single-binary, local-first DNS forwarder for Pi homelabs with per-device query logs, SQLite storage, domain dashboards, and no cloud telemetry.

Watcher is a conservative asset monitoring CLI for tracking DNS changes, open ports, web services, discovered URLs, and lightweight exposure risks over time.