AS43 Brookhaven National Laboratory

BNL-AS - Brookhaven National Laboratory · registered in the United States

IPv4 addresses66,5605 prefixes · 0.002% of announced IPv4

Rank in United States#873largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,653of 79,396 networks with IPv4

IPv633 x /483 prefixes

CountryUnited States18,679 ASNs registered there

Open AS43 in ASN lookup Look up an IP in this network (130.199.0.1) All networks in United States

IPv4 prefixes

All 5 prefixes, in address order.

130.199.0.0/16
192.12.15.0/24
192.33.128.0/24
192.153.161.0/24
192.203.218.0/24

IPv6 prefixes

All 3 prefixes.

2620:0:210::/48
2620:10a::/44
2620:12f:f000::/44

Similar-sized networks in United States

ASNNameIPv4 addresses

AS321#870 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)66,560

AS11827#871 WSU-PUL-AS - Washington State University66,560

AS4130#872 UPITT-AS - University of Pittsburgh66,560

AS10837#874 WELLSFARGO-10837 - Wells Fargo Bank, N.A.66,560

AS84#875 DNIC-AS-00084 - Navy Network Information Center (NNIC)66,560

AS2701#876 KSU-NET - Kansas State University66,560

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