EDNS - ECS problem

Hi everyone,

I’ve been having an issue with NextDNS's "Anonymized EDNS Client Subnet" feature. When it’s enabled, my subnet ip advertised is from São Paulo, even though I’m located in Brasília. Here’s what I’ve found:

Steps to Reproduce:

Run this command to query a DNS record using NextDNS’s ECS server:

dig +tcp +nocomment chaos google.com @ecs-test.nextdns.io

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Here’s part of the output I received:

;google.com.            CH    A
google.com.        299    IN    A    142.251.135.206
device-id.nextdns.io.    299    CH    TXT    "XXXX"
profile.nextdns.io.    299    CH    TXT    "xxxxxxxxxx"
client.nextdns.io.    299    CH    TXT    "189.61.51.xx"
client-name.nextdns.io.    299    CH    TXT    "dnscrypt"
device-model.nextdns.io. 299    CH    TXT    "Cloud Gateway Ultra"
proto.nextdns.io.    299    CH    TXT    "DOH"
server.nextdns.io.    299    CH    TXT    "edgeuno-bsb-1"
device-name.nextdns.io.    299    CH    TXT    "Ubiquiti"
smart-ecs.nextdns.io.    299    CH    TXT    "177.32.0.0/24"

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As you can see, the ECS subnet 177.32.0.0/24 is located in São Paulo, even though I’m in Brasília.

Has anyone else faced this problem? Is there a way to fix the ECS location accuracy without disabling the feature?

Thanks