ISP 可以進行 DHCP 等網路設定基礎架構，以傳回 Google 公用 DNS 位址 (8.8.8.8、8.8.4.4 和 IPv6)，讓網路上的用戶端直接使用 Google 公用 DNS。這是最簡單可靠的方法。藉由讓網路用戶端直接將 DNS 查詢傳送至 Google 公用 DNS，每個用戶端都會受到個別用戶端的頻率限制，非濫用用戶端不太可能受到節流影響。
透過本機解析器使用 Google 公用 DNS
ISP 也可能使用本機解析器進行用戶端查詢，並要求本機解析器將查詢轉送至 Google 公用 DNS。這可能是出於法規原因或營運的 ISP 的要求。
家用路由器或其他網路裝置
大部分的本機解析器都是在由 ISP 管理的路由器、防火牆或 DSL/有線數據機上執行。
其中，單一客戶具備專屬的 IP 位址，其運作方式就像直接使用 Google 公用 DNS 的用戶端。
共用快取解析器
如要減少 DNS 查詢的延遲時間，尤其是距離 Google 解析器位置較遠的 ISP，網際網路服務供應商 (ISP) 可以使用為許多用戶端提供服務的快取 DNS 解析器。
這可減少傳送至 Google 公用 DNS 的 DNS 查詢量，但專注於幾個 IP 位址，就更有可能進行節流作業。具備共用解析器將查詢轉送至 Google 公用 DNS 的 ISP 應監控 DNS 查詢率，並在比率超出限制時，要求提高頻率限制，或是超過 1% 的查詢未獲得回應。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-07-25 (世界標準時間)。"],[[["\u003cp\u003eGoogle Public DNS is a free service offered to everyone but utilizes rate limits to maintain service quality, which may result in throttling for high query volumes from a single IP address.\u003c/p\u003e\n"],["\u003cp\u003eBefore utilizing Google Public DNS, it is advised to determine your peak DNS queries per second and the number of routable IP addresses to ensure compliance with the default rate limits or to request a rate limit increase if needed.\u003c/p\u003e\n"],["\u003cp\u003eGoogle Public DNS can be implemented directly by configuring clients to use it or via local resolvers, with direct use offering individual rate limiting and greater resilience to throttling.\u003c/p\u003e\n"],["\u003cp\u003eISPs using shared resolvers or CG-NAT may require rate limit increases and should monitor their query rates, potentially requesting an increase if they exceed the limit or encounter significant unresponsive queries.\u003c/p\u003e\n"],["\u003cp\u003eFor enhanced reliability and to mitigate against single points of failure, Google Public DNS can be used in conjunction with other resolvers, or as an emergency fallback, although the latter requires careful configuration to avoid throttling during surges.\u003c/p\u003e\n"]]],["Google Public DNS, a free service with rate limits, may throttle high query volumes from single IPs (or IPv6 /64). Users should measure their peak DNS query rate and compare it to the 1500 QPS default limit. If exceeding, they can use direct queries or request a limit increase. ISPs can configure direct DNS queries or use local/shared resolvers. For increased reliability, they should use alternative resolvers, configure Google Public DNS as a fallback, and establish network peering with Google.\n"],null,[]]
