AS399411 Froedtert South, Inc.

FSI-23 - Froedtert South, Inc. · registered in the United States

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in United States#12,513largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#58,516of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS399411 in ASN lookup Look up an IP in this network (64.112.104.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

64.112.104.0/23

Similar-sized networks in United States

ASNNameIPv4 addresses

AS399350#12510 MCMTSG-ASN-01 - MCM Technology Solutions512

AS399368#12511 KIRKLAND-ELLIS-RY - Kirkland & Ellis LLP512

AS399400#12512 INSPIRO-RELIA-US - Inspiro Relia US, Inc.512

AS399419#12514 PSI-CORE-OH1 - Prime Servers, Inc.512

AS399426#12515 ASTSUL-ASN-01 - Applied Satellite Technology Systems US LLC512

AS399445#12516 TVCC-NET1 - TVCC512

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