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EDNS Compliance
ISC is testing EDNS compliance because the lack of proper EDNS compliance impacts the deployment of new DNS features. In particular we wish to deploy Domain Name System (DNS) Cookies [RFC 7873] which requires Unknown EDNS Options to be correctly handled by all servers.
That said we are testing all of the features of EDNS as we don't know when we are going to need to use one of the other features and it is better to fix all the issues we can see sooner rather than later as delaying will only increase the amount of fixing required and will make using the other extension mechanisms less deterministic.
EDNS Compliance Tester
NB: this ISC tester is a low capacity service. Clients found abusing it (e.g. by automating queries) may be blocked.
If you want to run bulk queries please run your own instance - the source code is available on our Gitlab server.
EDNS Compliance Reports
- Root and TLD EDNS Compliance Report
- Umbrella Top 1000 EDNS Compliance Report
- Umbrella Bottom 1000 of Top 1M EDNS Compliance Report
- .AU domains from Umbrella Top 1M EDNS Compliance Report
- .EDU domains from Umbrella Top 1M EDNS Compliance Report
- .GOV domains from Umbrella Top 1M EDNS Compliance Report
- .GOV domains (GSA + Umbrella Top 1M) - EDNS Compliance Report
External EDNS Compliance Reports
Other Compliance Reports
- Umbrella 1 Million - EDNS Compliance Report (raw data alexa1m.txt.gz)
- Probably DNS Flag Day Problematic Servers in Umbrella 1 Million
- Root and TLD - DNS Compliance Report
- Root and TLD - TYPE Code Handling Compliance Report
- Root and TLD - TSIG Well Know Key Handling Report (experimental) (raw data tld-tsig-wkk-report-raw.txt
- Umbrella 1 Million - TSIG Well Know Key Handling Report (experimental (raw data alexa1m-tsig-wkk.txt.gz)
DNS Testing Tools
Internet Systems Consortium, Inc.
PO Box 360
Newmarket, NH 03857
USA
Email: info@isc.org
Phone: +1 650 423 1300
Fax: +1 650 423 1355
© 2019 Internet Systems Consortium