$ query “AS13335” --type=asn → 1 result(s)

AS13335 · CLOUDFLARENET (CLOUDFLARENET ☁️)

Cloudflare Inc.

AS13335 is operated by Cloudflare Inc. and serves as a major transit provider, registered in the United States since 2010. The system announces an impressive 1.4 million IPv4 addresses, including a /14, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in the United Kingdom and Unknown Region, and smaller footprints in 47 additional countries. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #61 by Degree — Top 100 by unique BGP neighbor count

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
July 14, 2010
Last Changed
March 04, 2026
Last Seen
April 18, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
2 468 / 876
IPv6 Prefixes (raw / aggregated)
3 014 / 1 708
IPv4 Addresses
1 377 024
Largest IPv4 Prefix
/14 (262 144 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇺🇸 United States (1 270 784 IPs), 🇬🇧 United Kingdom (100 352 IPs), 🇿🇿 Unknown Region (32 768 IPs) and 47 more
Prefix Changed
April 19, 2026

Reputation

Reputation
Good — 399 flagged IPs out of 1 377 024 total (0.03%)
Open Proxies
3 known open proxies in this network

Connectivity Summary

Upstream Providers
151 upstreams providing transit
Peers
818 networks exchanging traffic without transit
Downstream Customers
939 downstreams buying transit
Unclassified
63 unclassified BGP neighbors
Degree
1 971 unique BGP neighbors
Reach
36 575 networks in customer cone

Upstream Providers (151)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS37468 — ANGOLA-CABLES
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)
  • AS3216 — SOVAM-AS
  • AS37100 — SEACOM-AS
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS3549 — LVLT-3549
  • AS30844 — LIQUID-AS
  • and 141 more

Prefix Lists

IPv4 Prefixes (2 468 total)

  • 104.16.0.0/14 (262 144 addresses (/14 prefix))
  • 172.65.0.0/16 (65 536 addresses (/16 prefix))
  • 104.25.0.0/16 (65 536 addresses (/16 prefix))
  • 104.28.0.0/16 (65 536 addresses (/16 prefix))
  • 104.21.0.0/17 (32 768 addresses (/17 prefix))
  • 152.114.0.0/17 (32 768 addresses (/17 prefix))
  • 172.67.128.0/17 (32 768 addresses (/17 prefix))
  • 104.24.128.0/17 (32 768 addresses (/17 prefix))
  • 104.27.0.0/17 (32 768 addresses (/17 prefix))
  • 104.29.128.0/18 (16 384 addresses (/18 prefix))
  • 162.159.0.0/18 (16 384 addresses (/18 prefix))
  • 172.67.64.0/18 (16 384 addresses (/18 prefix))
  • 104.24.0.0/18 (16 384 addresses (/18 prefix))
  • 104.20.0.0/18 (16 384 addresses (/18 prefix))
  • 152.114.128.0/18 (16 384 addresses (/18 prefix))
  • 150.48.128.0/18 (16 384 addresses (/18 prefix))
  • 204.195.192.0/18 (16 384 addresses (/18 prefix))
  • 104.30.160.0/19 (8 192 addresses (/19 prefix))
  • 162.158.160.0/19 (8 192 addresses (/19 prefix))
  • 104.30.0.0/19 (8 192 addresses (/19 prefix))
  • 162.159.128.0/19 (8 192 addresses (/19 prefix))
  • 172.64.32.0/19 (8 192 addresses (/19 prefix))
  • 104.24.64.0/19 (8 192 addresses (/19 prefix))
  • 172.66.128.0/19 (8 192 addresses (/19 prefix))
  • 104.21.192.0/19 (8 192 addresses (/19 prefix))
  • 172.66.160.0/20 (4 096 addresses (/20 prefix))
  • 172.70.32.0/20 (4 096 addresses (/20 prefix))
  • 104.23.160.0/20 (4 096 addresses (/20 prefix))
  • 172.68.16.0/20 (4 096 addresses (/20 prefix))
  • 172.66.192.0/20 (4 096 addresses (/20 prefix))
  • 104.23.208.0/20 (4 096 addresses (/20 prefix))
  • 104.23.224.0/20 (4 096 addresses (/20 prefix))
  • 172.64.240.0/20 (4 096 addresses (/20 prefix))
  • 172.64.208.0/20 (4 096 addresses (/20 prefix))
  • 203.168.192.0/20 (4 096 addresses (/20 prefix))
  • 172.64.144.0/20 (4 096 addresses (/20 prefix))
  • 104.26.0.0/20 (4 096 addresses (/20 prefix))
  • 172.70.240.0/20 (4 096 addresses (/20 prefix))
  • 104.27.192.0/20 (4 096 addresses (/20 prefix))
  • 172.71.144.0/20 (4 096 addresses (/20 prefix))
  • 162.159.240.0/20 (4 096 addresses (/20 prefix))
  • 162.159.64.0/20 (4 096 addresses (/20 prefix))
  • 162.158.224.0/20 (4 096 addresses (/20 prefix))
  • 104.21.224.0/20 (4 096 addresses (/20 prefix))
  • 172.69.128.0/20 (4 096 addresses (/20 prefix))
  • 198.41.192.0/20 (4 096 addresses (/20 prefix))
  • 104.29.64.0/20 (4 096 addresses (/20 prefix))
  • 162.158.208.0/20 (4 096 addresses (/20 prefix))
  • 162.158.112.0/20 (4 096 addresses (/20 prefix))
  • 172.70.128.0/20 (4 096 addresses (/20 prefix))
  • and 826 more

IPv6 Prefixes (3 014 total)

  • 2a0a:6c80::/29
  • 2a09:bac4::/30
  • 2a09:bac2::/31
  • 2405:b500::/32
  • 2c0f:f248::/32
  • 2606:54c0::/32
  • 2a09:bac1::/32
  • 2607:8940:2000::/35
  • 2606:4700::/36
  • 2405:8100:c000::/38
  • 2602:f660:80::/41
  • 2606:4700:3000::/42
  • 2606:4700:4000::/43
  • 2606:4700:90c0::/43
  • 2606:4700:9c60::/44
  • 2606:4700:9a90::/44
  • 2a06:98c1:3100::/44
  • 2606:4700:9b00::/44
  • 2401:c2e0:8000::/44
  • 2606:4700:8de0::/44
  • 2606:4700:99e0::/44
  • 2606:4700:91b0::/44
  • 2606:4700:8dd0::/44
  • 2606:4700:8d90::/44
  • 2606:4700:8d70::/44
  • 2606:4700:8ca0::/44
  • 2606:4700:9a60::/44
  • 2a02:d21:20::/44
  • 2606:4700:83b0::/44
  • 2606:4700:8390::/44
  • 2606:4700:4400::/44
  • 2606:4700:9ad0::/44
  • 2a06:98c0:1c60::/44
  • 2a06:98c0:1c20::/44
  • 2606:4700:9760::/44
  • 2606:4700:9640::/44
  • 2606:4700:3110::/44
  • 2606:4700:9ae0::/44
  • 2803:f800:50::/45
  • 2606:54c3::/45
  • 2a06:98c0:1c40::/45
  • 2a06:98c0:1c38::/45
  • 2606:4700:4030::/45
  • 2606:4700:42c8::/45
  • 2606:4700:43d8::/45
  • 2400:cb00:190::/45
  • 2606:4700:4020::/45
  • 2a06:98c0:1c50::/45
  • 2a06:98c0:1c70::/45
  • 2405:8100:50::/45
  • and 1658 more