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1.0.0.1 IPv4 ✓ Known IP

Cloudflare DNS — Secondary

Cloudflare, Inc. · AS13335

Overview

1.0.0.1 is the secondary resolver of Cloudflare Public DNS, intended to be configured alongside 1.1.1.1. The two share infrastructure, policies, and audited privacy commitments.

Common use cases

Always pair 1.1.1.1 with 1.0.0.1 in DNS settings — a single resolver is a single point of failure. If your primary becomes unreachable, the OS retries on the secondary.

Technical details

1.0.0.1 is part of 1.0.0.0/24, served by Cloudflare via anycast. Supports DNS over UDP/TCP 53, DNS-over-TLS on 853, and DNS-over-HTTPS at cloudflare-dns.com. DNSSEC enabled by default.

Frequently asked questions

Is 1.0.0.1 different from 1.1.1.1?

Functionally no — same service, same policies, same anycast network. The two IPs exist for primary/secondary redundancy.

位置

国家 N/A
城市 N/A
地区/州 N/A
邮政编码 N/A
大洲 N/A
坐标 N/A

时区

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欧盟成员

网络 / ISP

ISP Cloudflare, Inc.
组织 Cloudflare, Inc.
ASN AS13335

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