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n/dns.md: add sources for ecs debug domains and Cloudflare ECS of Akamai test domain

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Aminda Suomalainen 2024-05-06 15:32:02 +03:00
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n/dns.md
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@ -208,13 +208,19 @@ These issues bring additional questions:
Or what is being sent to the authoritative servers.
```bash
# https://support.google.com/interconnect/answer/7658602
dig +short TXT o-o.myaddr.l.google.com.
# https://www.akamai.com/blog/developers/introducing-new-whoami-tool-dns-resolver-information
dig +short TXT whoami.ds.akahelp.net.
dig +short TXT whoami.ipv6.akahelp.net.
dig +short TXT whoami.ipv4.akahelp.net.
# https://powerdns.org/useful-names/
dig +short TXT whoami-ecs.lua.powerdns.org.
dig +short TXT whoami-ecs.v6.powerdns.org.
dig +short TXT whoami-ecs.v4.powerdns.org.
```
- Note: Cloudflare sends ECS only for `whoami.ds.akahelp.net`, nowhere else.
- Note: [Cloudflare sends ECS only for `whoami.ds.akahelp.net`, nowhere else](https://developers.cloudflare.com/1.1.1.1/faq/#does-1.1.1.1-send-edns-client-subnet-header).
---