AS40923 FMR LLC

FID-SYS-RTP - FMR LLC · registered in the United States

IPv4 addresses11,26417 prefixes · <0.001% of announced IPv4

Rank in United States#2,825largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#8,605of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS40923 in ASN lookup Look up an IP in this network (155.199.32.1) All networks in United States

IPv4 prefixes

All 17 prefixes, in address order.

155.199.32.0/21
155.199.40.0/22
155.199.51.0/24
155.199.192.0/22
155.199.196.0/23
155.199.199.0/24
155.199.200.0/21
155.199.208.0/22
155.199.216.0/23
155.199.218.0/24
155.199.223.0/24
192.223.136.0/23
192.223.138.0/24
192.223.160.0/23
192.223.198.0/24
192.223.236.0/24
192.223.249.0/24

Other ASNs named FMR LLC

1 other network uses the same organisation name; together with AS40923 they announce 22,528 IPv4 addresses.

ASNNameIPv4 addresses

AS13322FMR-AS3 - FMR LLC US11,264

Similar-sized networks in United States

ASNNameIPv4 addresses

AS32016#2822 INTEGRA-WCI - Allstream Business US, LLC11,264

AS36026#2823 AS-CHI-CORP - CommonSpirit Health11,264

AS40266#2824 SQN-NET - SpeedyQuick Networks Inc11,264

AS53741#2826 AS53741 - American Airlines Inc.11,264

AS393436#2827 SLVREC - San Luis Valley Rural Electric Cooperative, Inc.11,264

AS394911#2828 COM1-ASN - Comm111,264

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