AS33759 Regeneron Pharmaceuticals Inc.

REGENERON - Regeneron Pharmaceuticals Inc. · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#11,425largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#50,997of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS33759 in ASN lookup Look up an IP in this network (24.38.10.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

24.38.10.0/24
72.43.219.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS33621#11422 CWL-30-IT-ASN - COMMNET WIRELESS LLC512

AS33685#11423 LOAFHOSTS - Loafhosts512

AS33726#11424 GENEVACOLLEGE-AS - GENEVA COLLEGE512

AS35850#11426 SCLS - Suffolk Cooperative Library System512

AS35851#11427 BANKERSBANKOFKANSAS - Bankers' Bank of Kansas512

AS35855#11428 UCCU - UTAH COMMUNITY FEDERAL CREDIT UNION512

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