AS393383 Spring Independent School District

SISD-ASN - Spring Independent School District · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#11,986largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#57,932of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS393383 in ASN lookup Look up an IP in this network (66.60.236.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

66.60.236.0/24
216.227.248.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS393366#11983 CENTRA-5 - Centra Health, Inc.512

AS393376#11984 DYNAMICEDGE - Dynamic Edge, Inc.512

AS393378#11985 SACFCU-P7148 - Cobalt Credit Union512

AS393400#11987 LUXOTTICA-NA2 - Luxottica of America Inc.512

AS393401#11988 HAYSMED - Hays Medical Center512

AS393411#11989 APOG-WASHINGTON-COLLEGE - Apogee Telecom Inc.512

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