AS394975 San Francisco Health Plan

SFHEALTHPLAN - San Francisco Health Plan · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#12,141largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#58,096of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS394975 in ASN lookup Look up an IP in this network (38.99.1.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

38.99.1.0/24
209.234.156.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS394932#12138 MOUNTAIN-INET-TFP - Mountain iNet, Inc.512

AS394950#12139 COLLECTIVE-HEALTH - CollectiveHealth, Inc.512

AS394964#12140 MARTINMARIETTA-AS1 - Martin Marietta Inc.512

AS394981#12142 CONTINENTAL-RESOURCES-INC-2 - Continental Resources, Inc.512

AS394997#12143 NEXUM-ABQ-ASN - Nexum, Inc.512

AS395007#12144 ROCKETCOMM - Rocket Communications Corp.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