AS21771 Nucor

NUCOR - Nucor · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#14,448largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#64,255of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS21771 in ASN lookup Look up an IP in this network (66.162.2.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

66.162.2.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS21754#14445 MARKEL-CORPORATION - Markel Corporation256

AS21761#14446 CLUBCAR-01 - Club Car, LLC256

AS21764#14447 CFCU-CORP - Clearview Federal Credit Union256

AS21780#14449 GRIFFITH-LABORATORIES - GRIFFITH FOODS INC.256

AS21791#14450 HUNTSVILLE-MEMORIAL-HOSPITAL - HUNTSVILLE MEMORIAL HOSPITAL256

AS21792#14451 FLAGLERHOSPITALINC - Flagler Hospital, Inc256

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