All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information.


DomainCat is described as 'Monitors SSL certificates and domain health for sysadmins and managed service providers. Get escalating expiry alerts, full DNS/SPF/DMARC checks, and a Grafana-compatible API — all without agents or firewall changes' and is a Uptime Monitor service in the network & admin category. There are three alternatives to DomainCat for Web-based and SaaS. The best DomainCat alternative is MxToolBox, which is free. Other great apps like DomainCat are DNSchecker and Dnsstuff.
All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information.


Check DNS Propagation worldwide. DNS Checker provides name server propagation check instantly. Changed nameservers so do a DNS lookup and check if DNS and nameservers have propagated.

DNSstuff offers DNS tools, Network tools, Email tools, DNS reporting and IP information gathering. Explore monitoring products and free DNS tools at DNSstuff.
