From 669bbd04cb240ea2138d4ab23d51805d7295d7e8 Mon Sep 17 00:00:00 2001
From: Mike <3455235+mike406@users.noreply.github.com>
Date: Sat, 12 Sep 2026 17:43:48 -0400
Subject: [PATCH] Allow including additional HTTP headers with any .nextdns.io
 subdomain

---
 config.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config.go b/config.go
index 73484d70..90a3d530 100644
--- a/config.go
+++ b/config.go
@@ -658,7 +658,7 @@ func (uc *UpstreamConfig) isNextDNS() bool {
 			domain = u.Hostname()
 		}
 	}
-	return domain == "dns.nextdns.io"
+	return strings.HasSuffix(strings.ToLower(domain), ".nextdns.io")
 }
 
 func (uc *UpstreamConfig) dohTransport(dnsType uint16) http.RoundTripper {