intoDNS is described as 'checks the health and configuration of DNS and mail servers' and is an website in the Network & Admin category. There are more than 25 alternatives to intoDNS, not only websites but also apps for a variety of platforms, including SaaS, Windows, Linux and Mac. The best alternative is Pingdom. It's not free, so if you're looking for a free alternative, you could try MxToolBox or Curler by Amixr.IO. Other great sites and apps similar to intoDNS are Up Ninja (Paid), Silent Down (Paid), Netthrob (Paid) and RapidSpike (Paid).
Free DNS Report - Tests A, MX, SOA, SPF records for speed, accuracy, and consistency. Includes timed out information which reports how many times a name server timed out. Also reports the average speed of your name server.
Monitor your website, server, API, application, service and get notified if your resources have some problems with availability. Upzilla notifies you in Slack, Telegram, Messenger, or by email. Works also as a public status page with subscriptions.
DNS Check is an application which compares the DNS records that you enter to what nameservers are returning in response to queries. If there's an issue, DNS Check will notify you, and enable you to quickly identify what it is.
Uptime.com provides peace of mind to thousands of customers like Apple, Microsoft, IBM, Palo Alto Networks, Kraft and BNP Paribas, who trust us to monitor website downtime, performance, speed, and domain health.