AS13748 Cold Spring Harbor Laboratory

CSHL - Cold Spring Harbor Laboratory · registered in the United States

IPv4 addresses65,5361 prefixes · 0.002% of announced IPv4

Rank in United States#1,137largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#3,150of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS13748 in ASN lookup Look up an IP in this network (143.48.0.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

143.48.0.0/16

Similar-sized networks in United States

ASNNameIPv4 addresses

AS13327#1134 EKU - Eastern Kentucky University65,536

AS13429#1135 MUSC - Medical University of South Carolina65,536

AS13548#1136 CHARLESTON-AS - College of Charleston65,536

AS13783#1138 RADFORD-UNIV-AS - Radford University65,536

AS13829#1139 PIMACOUNTY - Pima County65,536

AS13918#1140 CITYOFTUCSON - City of Tucson65,536

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