MX Lookup - CbrTool

What it does

Check MX records, mail servers, and DNS configurations instantly with our free MX Lookup tool. Verify email delivery settings, detect DNS issues, and ensure domain email authentication in seconds

This tool allows you to scan and display MX Server for the domain name. Instantly check whether a website is online, offline, or experiencing downtime. Online dnslookup is a web based DNS client that queries DNS records for a given domain name. The open port checker is a tool you can use to check your external IP address and detect open ports on your connection. Calculate IPv4 and IPv6 subnet masks, CIDR ranges, network addresses, broadcast addresses and available hosts instantly. Feel free to request missing tools or give some feedback using our contactfrom cbrtool.com

• 
  Dns Lookup — CbrToolJun 2026 · cbrtool.com · ▲3

  Lookup DNS Records for Any Domain Instantly

• 
  MX Lookup2017 · mxtoolbox.com · ▲5

  Check your DNS MX records

• 
  A site to look up DNS records2017 · dnsrecords.io · ▲82

  DNS record lookups just as you like 'em

• 
  Email Validator by SidemailFeb 2026 · sidemail.io · ▲16

  Hi HN – Kristyna here. I built this free, online email validator and would love to share it with you. What it checks: - Syntax – Confirms correct proper email format. - Domain & DNS – Verifies the domain exists and resolves. - MX records – Verifies the domain can receive mail. - SMTP handshake (optional) – Checks the mail server accepts the recipient (no message is sent). - Disposable domains – Flags temporary inbox providers that can hurt deliverability lists. - Common typos – Catches mistakes and suggests fixes. How it works: Paste an email > click Validate > get a clear result with…

• 
  SMTP Email VerifierJun 2026 · apify.com · ▲7

  Check email lists with syntax, MX, and SMTP verification

• 
  DNS Digger2025 · dnsdigger.xyz · ▲13

  Blazing fast DNS lookup, WHOIS & record check in one tool

• 
  WallHop – 12ft.io is gone, so I built a replacement▲287

  wallhop is a free paywall bypass. Paste any article link to read it without paywall popups, ads or clutter. No signup, no extension. A simple 12ft.io alternative.

  Growth · 12d ago · wallhop.io

• 
  Prefer▲201

  The execution layer for AEO

  Growth · 23d ago · tryprefer.com

• 
  MakerMap▲197

  A living map of makers and what they’re building

  Growth · 27d ago · makermap.lol

• 
  Fundraisly▲1,537

  AI fundraising agent that finds investors and books meetings

  AI · Jun 2026 · fundraisly.com

• 
  Homebrew 6.0.0▲1,481

  Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!

  Dev tools · Jun 2026 · brew.sh

• 
  Performative-UI – A react component library of design tropes▲1,181

  Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!

  Life & fun · Jun 2026 · vorpus.github.io

• 
  Upstream▲976

  The inbox designed for humans and agents

  AI · Jun 2026 · upstream.do

• 
  Goldfish▲958

  Press Option. It knows your work and replies like you

  AI · Jun 2026 · goldfish.sh

• 
  I made Google Trends for Hacker News by indexing 18 years of comments▲822

  Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.

  Life & fun · Jun 2026 · hackernewstrends.com