Open AS397496 in ASN lookup Look up an IP in this network (2001:550:1b0a::1) All networks in United States

IPv6 prefixes

All 1 prefix.

• 2001:550:1b0a::/48

Other ASNs named Inmarsat Government

1 other network uses the same organisation name; together with AS397496 they announce 18,688 IPv4 addresses.

ASNNameIPv4 addresses

AS31753INMARSAT-GOVERNMENT-1 - Inmarsat Government US18,688

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