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

AS13335 · CLOUDFLARENET-AS (CLOUDFLARENET-AS ☁️)

Cloudflare Inc.

AS13335 is operated by Cloudflare Inc. and serves as a major transit provider, established in the United States in 2015. The system announces an impressive 1.4 million IPv4 addresses, including a /14, and supports IPv6. Its primary geographic footprint is in the United States, with additional presence in the United Kingdom and Singapore, and smaller footprints in 48 additional countries. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #60 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
October 08, 2015
Last Changed
May 10, 2026
Last Seen
June 22, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
2 371 / 870
IPv6 Prefixes (raw / aggregated)
2 872 / 1 629
IPv4 Addresses
1 357 056
Largest IPv4 Prefix
/14 (262 144 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇺🇸 United States (1 269 760 IPs), 🇬🇧 United Kingdom (101 632 IPs), 🇸🇬 Singapore (13 568 IPs) and 48 more
Prefix Changed
June 23, 2026

Reputation

Reputation
Good — 88 flagged IPs out of 1 357 056 total (0.01%)

Connectivity Summary

Upstream Providers
143 upstreams providing transit
Peers
810 networks exchanging traffic without transit
Downstream Customers
974 downstreams buying transit
Unclassified
50 unclassified BGP neighbors
Degree
1 977 unique BGP neighbors
Reach
32 265 networks in customer cone

Upstream Providers (143)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS6461 — MFNX (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS37468 — ANGOLA-CABLES
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)
  • AS3216 — SOVAM-AS
  • AS37100 — SEACOM-AS
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS30844 — LIQUID-AS
  • and 133 more

Prefix Lists

IPv4 Prefixes (2 371 total)

  • 104.16.0.0/14 (262 144 addresses (/14 prefix))
  • 104.28.0.0/16 (65 536 addresses (/16 prefix))
  • 172.65.0.0/16 (65 536 addresses (/16 prefix))
  • 104.25.0.0/16 (65 536 addresses (/16 prefix))
  • 104.27.0.0/17 (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))
  • 152.114.0.0/17 (32 768 addresses (/17 prefix))
  • 104.21.0.0/17 (32 768 addresses (/17 prefix))
  • 104.20.0.0/18 (16 384 addresses (/18 prefix))
  • 104.24.0.0/18 (16 384 addresses (/18 prefix))
  • 104.29.128.0/18 (16 384 addresses (/18 prefix))
  • 172.67.64.0/18 (16 384 addresses (/18 prefix))
  • 150.48.128.0/18 (16 384 addresses (/18 prefix))
  • 152.114.128.0/18 (16 384 addresses (/18 prefix))
  • 204.195.192.0/18 (16 384 addresses (/18 prefix))
  • 162.159.0.0/18 (16 384 addresses (/18 prefix))
  • 104.21.192.0/19 (8 192 addresses (/19 prefix))
  • 104.24.64.0/19 (8 192 addresses (/19 prefix))
  • 104.23.224.0/19 (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))
  • 104.30.160.0/19 (8 192 addresses (/19 prefix))
  • 172.66.128.0/19 (8 192 addresses (/19 prefix))
  • 104.30.0.0/19 (8 192 addresses (/19 prefix))
  • 104.21.224.0/20 (4 096 addresses (/20 prefix))
  • 172.70.32.0/20 (4 096 addresses (/20 prefix))
  • 172.64.80.0/20 (4 096 addresses (/20 prefix))
  • 203.168.192.0/20 (4 096 addresses (/20 prefix))
  • 172.71.144.0/20 (4 096 addresses (/20 prefix))
  • 104.23.208.0/20 (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))
  • 104.26.0.0/20 (4 096 addresses (/20 prefix))
  • 172.66.160.0/20 (4 096 addresses (/20 prefix))
  • 104.27.192.0/20 (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))
  • 104.23.160.0/20 (4 096 addresses (/20 prefix))
  • 198.41.192.0/20 (4 096 addresses (/20 prefix))
  • 172.70.240.0/20 (4 096 addresses (/20 prefix))
  • 172.64.144.0/20 (4 096 addresses (/20 prefix))
  • 172.64.112.0/20 (4 096 addresses (/20 prefix))
  • 162.159.240.0/20 (4 096 addresses (/20 prefix))
  • 108.162.192.0/20 (4 096 addresses (/20 prefix))
  • 162.159.64.0/20 (4 096 addresses (/20 prefix))
  • 162.158.208.0/20 (4 096 addresses (/20 prefix))
  • 141.101.112.0/20 (4 096 addresses (/20 prefix))
  • 162.158.160.0/20 (4 096 addresses (/20 prefix))
  • 162.158.112.0/20 (4 096 addresses (/20 prefix))

IPv6 Prefixes (2 872 total)

  • 2a0a:6c80::/29
  • 2a09:bac4::/30
  • 2a09:bac2::/31
  • 2401:9860::/32
  • 2405:b500::/32
  • 2c0f:f248::/32
  • 2a09:bac1::/32
  • 2606:54c0::/32
  • 2607:8940:2000::/35
  • 2606:4700::/36
  • 2405:8100:c000::/38
  • 2602:f660:80::/41
  • 2606:4700:3000::/42
  • 2606:4700:90c0::/43
  • 2606:4700:4000::/43
  • 2606:4700:8d90::/44
  • 2606:4700:9a60::/44
  • 2606:4700:8d70::/44
  • 2a06:98c1:3100::/44
  • 2606:4700:8dd0::/44
  • 2606:4700:8de0::/44
  • 2606:4700:83b0::/44
  • 2606:4700:91b0::/44
  • 2606:4700:9640::/44
  • 2606:4700:9760::/44
  • 2606:4700:99e0::/44
  • 2606:4700:8ca0::/44
  • 2606:4700:9a90::/44
  • 2606:4700:9ad0::/44
  • 2606:4700:9ae0::/44
  • 2606:4700:9b00::/44
  • 2606:4700:9c60::/44
  • 2606:4700:8390::/44
  • 2606:4700:4400::/44
  • 2a02:d21:20::/44
  • 2606:4700:3110::/44
  • 2a06:98c0:1c20::/44
  • 2401:c2e0:8000::/44
  • 2a06:98c0:1c60::/44
  • 2a06:98c0:1c38::/45
  • 2a06:98c0:1c80::/45
  • 2405:8100:50::/45
  • 2606:4700:4020::/45
  • 2606:4700:4030::/45
  • 2606:4700:42c8::/45
  • 2606:4700:43d8::/45
  • 2a09:bac0:1008::/45
  • 2400:cb00:50::/45
  • 2400:cb00:720::/45
  • 2400:cb00:960::/45