AS13335 Cloudflare, Inc. — Informations ASN

AS13335Cloudflare, Inc.CDN

WHOIS Topology

United States · ARINcloudflare.com

Hosts top sitesAnycastCDNDDoS mitigationCritical infrastructureRPKI filteringVPN services

IPv4 addresses

1 459 712

2 708 announced prefixes

IPv6 addresses

1.52 × 10³⁰

3 084 announced prefixes

BGP neighbours

…

CAIDA rank

#62

Customer cone 1 033 ASNs

Estimated users

17 M

APNIC: 17,5 M

RPKI

95% valid

6 invalid · 284 not covered

Average purity

15 029 sampled IPs

IXPs / facilities

357 / 224

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

Loading routing history…

IP ranges

Currently announced prefixes with their RIR registration and geolocation.

Prefix	RPKI	Registration	Geolocation	Addresses
152.114.0.0/17	Not found	NPSHOLDINGSRIPE	United Kingdom	32 768
150.48.128.0/18	Valid	STUB-150-48-128SLASH18APNIC	United States	16 384
152.114.128.0/18	Not found	NPSHOLDINGSRIPE	United Kingdom	16 384
204.195.192.0/18	Valid	—	United States	16 384
104.21.0.0/19	Valid	—	—	8 192
104.21.32.0/19	Valid	—	—	8 192
104.21.64.0/19	Valid	—	—	8 192
104.21.96.0/19	Valid	—	—	8 192
104.21.192.0/19	Valid	—	—	8 192
162.159.128.0/19	Valid	—	United States	8 192
172.65.0.0/19	Valid	—	—	8 192
172.65.32.0/19	Valid	—	—	8 192
16.5.144.0/20	Valid	—	United States	4 096
90.96.176.0/20	Valid	NET-90-96-176-0-20RIPE	United States	4 096
104.16.0.0/20	Valid	—	—	4 096
104.16.16.0/20	Valid	—	—	4 096
104.16.32.0/20	Valid	—	—	4 096
104.16.48.0/20	Valid	—	—	4 096
104.16.64.0/20	Valid	—	—	4 096
104.16.80.0/20	Valid	—	—	4 096

Only the first 500 prefixes are listed; address counts and geography use all prefixes.

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 2 211 / 5 702 （39%） · flagged 1 481

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

104.21.64.0/1931/32 with data · 13 flagged

104.21.0.0/1928/32 with data · 12 flagged

104.21.32.0/1928/32 with data · 13 flagged

162.159.128.0/1928/32 with data · 13 flagged

104.18.0.0/2016/16 with data · 15 flagged

104.18.32.0/2016/16 with data · 14 flagged

104.26.0.0/2016/16 with data · 14 flagged

162.159.0.0/2016/16 with data · 4 flagged

172.67.64.0/2016/16 with data · 12 flagged

172.67.160.0/2016/16 with data · 6 flagged

104.17.128.0/2015/16 with data · 1 flagged

104.17.144.0/2015/16 with data · 5 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 670–84 11 04950–69 3 3630–49 611

0.57%

Share of IPv4 reported or blocklisted

8 071

Listed IPs

15 029

Analysed IPs

Riskiest /24 blocks

/24 block	Flagged	Analysed
104.28.163.0/24	61	114
104.28.156.0/24	38	99
104.28.159.0/24	32	92
104.28.162.0/24	32	79
104.28.166.0/24	31	81
104.28.164.0/24	29	77
104.28.155.0/24	28	73
104.28.152.0/24	26	66
104.28.157.0/24	24	99
104.28.165.0/24	20	81

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

United States35.3%
United Kingdom12.0%
Germany4.6%
Singapore3.8%
India3.7%
Brazil3.4%

Scope: Global
In registered country: 35.3%

Estimated by sampling IPv4 ranges against a geolocation database.

Chargement…

Opérateurs amont et voisins BGP

AS13335Page dédiée

Chargement des opérateurs amont et des voisins…

WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

Information	Source	Updated
Registered country	RIR daily delegation statistics	2026-10-22
Registered address & allocation date	RIR registration data (RDAP)	2026-09-26
Organization & company country	AS-to-organization data	2026-10-22
Network type	CleanIP ASN canon	2026-10-22
Exchanges & facilities	Operator self-reported interconnection data	2026-10-22
Announced prefixes & BGP neighbours	Public BGP routing data	2026-10-22
IPv4 geography	Geolocation database	—
RPKI validation	RPKI ROA validation data	2026-10-22
Rank & customer cone	CAIDA AS Rank	2026-10-01
Estimated users (APNIC)	APNIC Labs user estimates	2026-10-20
Network tags	Public routing data community tags	2026-10-22
IP reputation	CleanIP lookups and neighbour sampling	—

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Recoupement multisource · Données de réputation internes · Uniquement des données réelles

Résultat de recherche ASN pour AS13335 Cloudflare, Inc. : taille du réseau, routage BGP et enregistrement

Présence en datacenter

Opérateurs amont et voisins BGP