Alternatives

Products that do what DNS change monitor and RFC validator does

1. 1RD
   Recursive DNS Server Fingerprint▲120

   2017 · recdnsfp.github.io

2. 2DD
   Dnsyo – DNS propagation checker▲56

   2013 · samarudge.github.io

3. 3AS
   A simple-to-update dynamic DNS service▲30

   2014 · dhcp.io

4. 4DS
   DNS spy, monitoring for a more robust DNS setup▲6

   2017 · dnsspy.io

5. 5DA
   Dug, A global DNS propagation checker on your CLI▲33

   2021 · github.com

6. 6DS
   DNS Spy – Monitor, back-up and alert on changes in DNS records▲6

   2017 · dnsspy.io

7. 7WD
   Which DNS servers are you pointing to?▲283

   2020 · which.nameserve.rs

8. 8DR
   DNS Rebind Toolkit▲5

   2018 · github.com

9. 9AS
   A site to look up DNS records▲82

   2017 · dnsrecords.io

10. 10DR
    DNS rebinding protection for Express.js▲30

    2018 · github.com

11. 11IT
    Identifying the DNS server used to fulfill a HTTP request▲17

    2013 · 5f5.org

12. 12DL
    DNS Live on Handshake▲48

    2020 · live.ix

13. 13ED
    Essential Dynamic DNS▲17

    2014 · slimdns.com

14. 14DB
    DNS Benchmark Tool – Compare and monitor resolvers▲59

    I built a CLI to benchmark DNS resolvers after discovering DNS was adding 300ms to my API requests. v0.3.0 just released with new features: compare: Test single domain across all resolvers top: Rank resolvers by latency/reliability/balanced monitor: Continuous tracking with threshold alerts 1,400+ downloads in first week. Quick start: pip install dns-benchmark-tool dns-benchmark compare --domain google.com CLI stays free forever. Hosted version (multi-region, historical tracking, alerts) coming Q1 2026. GitHub: https://github.com/frankovo/dns-benchmark-tool…

    Nov 2025 · github.com

15. 15GB
    GitHub-based DNS Hosting▲37

    2014 · dns-api.com

16. 16AD
    A DNS over HTTPS proxy in 80 lines of Golang▲20

    2018 · github.com

17. 17MI
    Monitor.io – remote monitoring and debugging for socket.io▲51

    2014 · drewblaisdell.github.io

18. 18DR
    DNS Rewrite Proxy▲14

    2020 · github.com

19. 19DB
    DNS-based alternative to the web for structured data▲59

    2020 · num.uk

20. 20DD
    Domain DMARC Checker▲6

    May 2026 · dmarcdefender.io

21. 21MA
    MassDNS – A high-performance DNS stub resolver in C▲35

    2016 · github.com

22. 22SC
    Server Check.in - inexpensive website uptime monitoring▲32

    2012 · servercheck.in

23. 23DA
    Dnsbeat – An Elasticsearch Beat to Monitor DNS Zones▲8

    2020 · github.com

24. 24RM
    rfc.me▲21

    2017 · rfc.me

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