Operations | Monitoring | ITSM | DevOps | Cloud

The best DNS monitoring tools are Hyperping for fast DNS checks with on-call and a status page, Oh Dear for authoritative nameserver comparison and change history, Site24x7 for DNSSEC and global locations inside a suite, UptimeRobot for inexpensive DNS checks next to HTTP, and DNS Spy for dedicated DNS security and WHOIS. I analyzed 24 current products and shortlisted five. Every tool below can query DNS on a schedule and alert when the answer is missing or wrong.

The best API monitoring tools are Hyperping for HTTP and API checks with on-call and status pages, Checkly for API monitoring as code, Postman Monitors for teams that already keep collections in Postman, Datadog for connecting failed checks to traces and logs, Grafana Cloud for teams using k6, Better Stack for checks inside a broader incident workflow, and UptimeRobot for inexpensive availability checks.