
UptimeRobot
EasyDMARC
Pingdom
HetrixTools
dmarcian
Mail Tester
StatusCake
All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.

WhatIsMy-IPAddress.com
ipinfo.io
IP Location
DataFeature
IPTools
IP Tools: Network Scanner
ToolPing.nl
Free browser-based tools for public IP checks, IP lookup, CGNAT and Double NAT diagnosis, subnet calculation, DHCP planning, Wi-Fi analysis, and router troubleshooting.

Which is more popular?
Based on our record, MxToolBox seems to be more popular. It has been mentioned 201 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | mxtoolbox.com | routernat.com |
| Pricing | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of MxToolBox yet.
RouterNAT is a collection of free browser-based utilities for router owners, home-network users, technicians, and small-office administrators. The tools help users understand IP addressing, NAT behavior, subnetting, DHCP configuration, Wi-Fi performance, and common router problems without...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
MxToolBox is highly recommended for IT professionals, network administrators, email server administrators, and anyone responsible for maintaining the health and security of network systems. It is also beneficial for businesses of all sizes that rely on email communication and need to ensure their servers and domains are functioning correctly and not blacklisted.
No analysis of RouterNAT yet.
Walkthroughs and reviews on video.
Episode 201 - Tools, Tips and Tricks - MXToolbox.com
No RouterNAT videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing MxToolBox and RouterNAT.
RouterNAT's answer:
RouterNAT uses Go, PostgreSQL, server-rendered HTML, CSS, and lightweight JavaScript. It runs on Linux with Caddy providing HTTPS and reverse-proxy services.
RouterNAT's answer:
The primary audience includes home router owners, Wi-Fi users, IT students, network technicians, small-office administrators, and people troubleshooting IP addressing, NAT, DHCP, subnetting, or wireless performance.
RouterNAT's answer:
RouterNAT was created to make common router and network concepts easier to understand. Many existing tools provide a single number without explaining its meaning. RouterNAT combines useful calculations with practical guidance so users can make better-informed troubleshooting decisions.
RouterNAT's answer:
RouterNAT combines practical networking calculators, diagnostic tools, and clear technical explanations in one lightweight website. Many calculations run directly inside the browser. The tools do not attempt to sign in to, scan, or modify routers and connected devices.
RouterNAT's answer:
RouterNAT focuses specifically on problems faced by router owners, home-network users, and small-office administrators. Results include understandable explanations, limitations, and relevant troubleshooting guidance instead of returning unexplained values.
RouterNAT's answer:
RouterNAT is a free public resource and does not claim named enterprise customers.
It is designed for individual router owners, home-network users, technicians, students, and small-office administrators.
Share your experience with using MxToolBox and RouterNAT. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Did you do blacklist (and other) checks with https://mxtoolbox.com/ ? - Source: Hacker News / about 1 month ago
Made the switch to self-hosted https://mailu.io (on k8s) 2 years ago when Gandi announced the deprecation of their free plan. Happy after IP was off most blocklists, but setup was kinda rough - https://mxtoolbox.com is your friend. - Source: Hacker News / over 1 year ago
I used these tools in the past: https://mxtoolbox.com/ https://www.mail-tester.com/. - Source: Hacker News / over 2 years ago
Tracking RouterNAT since Oct 2026.
When comparing MxToolBox and RouterNAT, you can also consider the following products.


Free IP lookup plus a full privacy check in your browser: VPN/Tor detection, DNS, IPv6 and WebRTC leak tests, browser fingerprint and IP blacklist. No sign-up.
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With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Compare Pingdom to MxToolBox or RouterNAT:

IPLocation.io provides a free lookup tool to check the location of your Public IP Address. It finds this data through various GEO IP databases and online services. Just enter an IP and check its location easily.
Compare IP Location to MxToolBox or RouterNAT: