AS13335
Cloudflare Inc.
San Francisco, California, US
CDN / Security Provider ARIN United States
Check if your current IP address belongs to Cloudflare or another ISP
🔍 Check My IP →
🏢 Organisation
Full nameCloudflare Inc.
ASNAS13335
TypeCDN / Security Provider
CountryUnited States
HeadquartersSan Francisco, California, US
Founded2009
Websitecloudflare.com
RegistryARIN
🌐 Network
Total IPs~2.8 million (IPv4)
UpstreamTier-1 and Tier-2 peers — highly connected at major IXPs worldwide
IPv62606:4700::/32, 2803:f800::/32
RIRARIN
Abuse emailabuse@cloudflare.com
Abuse formReport abuse →
📌 IPv4 Address Ranges
1.1.1.0/24 1.0.0.0/24 104.16.0.0/12 172.64.0.0/13 131.0.72.0/22 162.158.0.0/15 198.41.128.0/17
🔁 BGP Peers
AS1299 (Telia) AS3356 (Lumen) AS174 (Cogent) AS6939 (Hurricane Electric) AS2914 (NTT) AS3257 (GTT)
🔒
Your ISP can see every website you visit
A VPN encrypts your traffic and hides it from Cloudflare and any other ISP.
PureVPN → IPVanish →

About Cloudflare Inc. (AS13335)

AS13335 is Cloudflare's primary ASN used for its global CDN, DDoS protection, DNS resolver (1.1.1.1), and Zero Trust security products. Cloudflare's network spans over 300 cities and handles roughly 20% of all internet traffic. The 104.16.0.0/12 range alone hosts millions of websites that use Cloudflare for protection and performance. Cloudflare also operates the world's fastest public DNS resolver at 1.1.1.1 from this ASN.

What AS13335 Means for Your Privacy

Every time you visit a website, your IP address — and therefore your ISP (Cloudflare Inc.) — is visible to that site. Cloudflare Inc. as your ISP can see all unencrypted traffic passing through their network, including the domains you visit. This is standard practice for all ISPs and is typically used for network management, legal compliance, and in some cases targeted advertising.

If your device is assigned an IP in Cloudflare Inc.’s ranges, websites you visit will identify your connection as coming from Cloudflare Inc.. To prevent this, a VPN replaces your ISP-assigned IP with the VPN server’s IP, making your traffic appear to come from a different provider entirely.

Technical Notes for AS13335

AS13335 is registered with ARIN — the Regional Internet Registry responsible for IP allocations in North America. The ASN is used to announce IP prefixes to the global BGP routing table, allowing other networks to route traffic to Cloudflare Inc.’s infrastructure.

Cloudflare Inc. peers with major transit providers and internet exchanges to ensure global reachability. BGP peering relationships determine how traffic flows between Cloudflare Inc. and the rest of the internet.

Frequently Asked Questions About AS13335

Why does Cloudflare's AS13335 appear for so many different websites?
Cloudflare uses shared IP addresses across its CDN. Millions of websites point their DNS to Cloudflare, which then serves their content from shared IPs in the 104.16.0.0/12 range. This means many different websites resolve to the same Cloudflare IP.
Does Cloudflare log my DNS queries on 1.1.1.1?
Cloudflare states it does not log DNS queries linked to individual users and purges all logs within 24 hours. Their DNS resolver is audited annually by KPMG to verify privacy practices.
How do I report abuse through a Cloudflare-proxied website?
Use Cloudflare's abuse form at cloudflare.com/abuse. Cloudflare will forward the report to the website owner. For illegal content, Cloudflare may terminate the service.

Learn More About IP Addresses & Privacy

Related ISPs & Networks

AS15169
Google LLC
Content Provider
AS8075
Microsoft Corporation
Content Provider / Cloud
AS14618
Amazon.com Inc.
Cloud Provider

← Back to ISP & ASN Lookup: Complete List of Networks

Last updated: March 30, 2026 • Data sourced from ARIN WHOIS, BGP.he.net, and public routing tables. • Report an error

Scroll to Top