AS21623 Spacelink Systems

SPACELINK - Spacelink Systems · registered in the United States

IPv4 addresses16,6408 prefixes · <0.001% of announced IPv4

Rank in United States#2,293largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#6,805of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited States18,679 ASNs registered there

Open AS21623 in ASN lookup Look up an IP in this network (38.96.21.1) All networks in United States

IPv4 prefixes

All 8 prefixes, in address order.

38.96.21.0/24
65.50.224.0/19
66.181.0.0/20
66.181.16.0/22
66.181.20.0/23
66.181.22.0/24
66.181.23.0/24
66.181.24.0/21

IPv6 prefixes

All 1 prefix.

2604:3200::/32

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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