AS202623 CLOUDFLARENET-CORE Cloudflare Inc

CLOUDFLARENET-CORE Cloudflare Inc · registered in the United States

IPv4 addresses30,72011 prefixes · <0.001% of announced IPv4

Rank in United States#1,792largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#4,985of 79,396 networks with IPv4

IPv623 x /4815 prefixes

CountryUnited States18,679 ASNs registered there

Open AS202623 in ASN lookup Look up an IP in this network (104.23.32.1) All networks in United States

IPv4 prefixes

All 11 prefixes, in address order.

104.23.32.0/19
104.23.64.0/19
141.101.64.0/24
141.101.91.0/24
162.159.83.0/24
172.71.32.0/19
172.71.64.0/20
198.41.143.0/24
198.41.150.0/24
198.41.245.0/24
198.41.252.0/23

IPv6 prefixes

All 15 prefixes.

2400:cb00:420::/48
2400:cb00:1028::/47
2a06:98c0:1401::/48
2a06:98c0:3605::/48
2a06:98c0:3606::/47
2a06:98c0:360e::/48
2a06:98c0:3612::/48
2a06:98c0:3616::/48
2a06:98c0:3626::/47
2a06:98c0:362b::/48
2a06:98c0:362c::/47
2a06:98c0:362f::/48
2a06:98c0:3630::/47
2a06:98c0:3632::/48
2a06:98c0:3634::/46

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AS6142#1793 SUN-JAVA - Oracle Corporation30,464

AS1585#1794 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD)30,464

AS14090#1795 NDTELCO - North Dakota Telephone Co.30,464

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources