AS26551 Sargent & Lundy Engineers

SARGENT-AND-LUNDY - Sargent & Lundy Engineers · registered in the United States

IPv4 addresses65,53612 prefixes · 0.002% of announced IPv4

Rank in United States#1,213largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#3,278of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS26551 in ASN lookup Look up an IP in this network (151.154.0.1) All networks in United States

IPv4 prefixes

All 12 prefixes, in address order.

151.154.0.0/18
151.154.64.0/20
151.154.80.0/21
151.154.88.0/21
151.154.96.0/21
151.154.104.0/21
151.154.112.0/20
151.154.128.0/20
151.154.144.0/20
151.154.160.0/19
151.154.192.0/19
151.154.224.0/19

Similar-sized networks in United States

ASNNameIPv4 addresses

AS25978#1210 RUSH-EXTERNAL - Rush University Medical Center65,536

AS26438#1211 MONROE-COMMUNITY-COLLEGE - Monroe Community College65,536

AS26539#1212 GIANT-FOOD-INC - Ahold U.S.A., Inc.65,536

AS26818#1214 COL-PUB-SCHOOLS-OH - Columbus Public Schools65,536

AS27219#1215 SUNY-CORTLAND - SUNY College at Cortland65,536

AS27336#1216 SENTARA-HEALTH-CARE - Sentara Healthcare65,536

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