Akamai and EDNS Client Subnet issues

### Issue Details

$ CLASS=CH RRTYPE="TXT" dnslookup id.server tls://dns.adguard.com
dnslookup v1.9.1
dnslookup result (elapsed 276.594529ms):
;; opcode: QUERY, status: NXDOMAIN, id: 60293
;; flags: qr rd ra; QUERY: 1, ANSWER: 0,
AUTHORITY: 1, ADDITIONAL: 6
;; QUESTION SECTION:
;id.server. CH TXT ;;
AUTHORITY SECTION:
. 1237 IN SOA a.root-servers.net.
nstld.verisign-grs.com. 2024012202 1800 900
604800 86400
;; ADDITIONAL SECTION:
client-ip.adguard-dns.com. 3600 CH TXT "14.226.99.x"
server-ip.adguard-dns.com. 3600 CH TXT "94.140.14.14"
country.adguard-dns.com. 3600 CH TXT "VN"
asn.adguard-dns.com. 3600 CH TXT "45899"
subdivision.adguard-dns.com. 3600 CH TXT "HP" resp.res-
type.adguard-dns.com. 3600 CH TXT "normal"

### Expected Behavior

When you are in the North of Vietnam, your ECS should be set to ones in the North, because the client should connect to CDNs in Hanoi/HCM/Hongkong for shorter distances and latency, instead of Singapore.

### Actual Behavior

$ RRTYPE=TXT dnslookup o-o.myaddr.l.google.com tls://dns.adguard.com
dnslookup v1.9.1
dnslookup result (elapsed 285.909138ms):
;; opcode: QUERY, status: NOERROR, id: 18760
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION: ;o-
o.myaddr.l.google.com. IN TXT

;; ANSWER SECTION:
o-o.myaddr.l.google.com. 60 IN TXT "edns0-client-subnet 222.255.238.0/24"
o-o.myaddr.l.google.com. 60 IN TXT "138.199.46.250"

$ ipinfo.sh 222.255.238.0 [11:14:28]
{
"ip": "222.255.238.0",
"hostname": "static.vnpt.vn",
"city": "Ho Chi Minh City",
"region": "Ho Chi Minh",
"country": "VN",
"loc": "10.8230,106.6296",
"org": "AS45899 VNPT Corp",
"postal": "71606",
"timezone": "Asia/Ho_Chi_Minh"
}