asn.dev

Autonomous system

AS13335 CLOUDFLARENET

Hosting ARIN Content

IPv4 addresses 1.34M 876 prefixes
IPv6 prefixes 1,796 counted as prefixes, not addresses
Countries 1 mostly US
Flagged prefixes 0 none

Summary

Cloudflare, Inc.

Global · AI-generated

cdn dns security ddos-protection

Cloudflare runs one of the world's largest edge networks, sitting in front of a

huge slice of the web as a CDN, reverse proxy, and DDoS-mitigation layer.

What it's used for

  • Caching and accelerating websites from data centers in hundreds of cities.
  • Absorbing and filtering DDoS attacks and malicious traffic before it reaches an origin server.
  • Public DNS resolver 1.1.1.1, WARP/Zero Trust, R2 storage, and the Workers edge-compute platform.

Notable

  • 1.1.1.0/24 (the 1.1.1.1 resolver) is one of the most recognizable prefixes on the internet and a common test target.
  • Because so many sites hide behind Cloudflare, an IP in this ASN usually tells you the proxy, not the site's real origin or its true location.

Interesting

  • Cloudflare famously points a wall of lava lamps ("LavaRand") at cameras to help seed cryptographic randomness.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Address space

Summary

Full explorer
CountryNamePrefixes
USUnited States of America2,672

Registry

Allocation record

via ARIN RDAP
Registry
ARIN
Handle
AS13335
Registry name
CLOUDFLARENET
Registrant
Cloudflare, Inc.
Abuse contact
abuse@cloudflare.com
Registered
2010-07-14
Last changed
2017-02-17
Status
active

Declared

PeeringDB profile

self-reported
Name
Cloudflare
Network type
Content
Scope
Global
Traffic ratio
Mostly Outbound
Peering policy
Open
IRR as-set
AS13335:AS-CLOUDFLARE
Present at
355 exchanges
Facilities
223 facilities
Website
https://www.cloudflare.com

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

No IC3 indicators Nothing from the FBI IC3 feed.

Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check