AS1637

Name: AS1637 — Headquarters, USAISC
Creator: ipdex

Headquarters, USAISC Unknown registered in United States

122IPv4 prefixes

1IPv6 prefixes

#13,215AS Rank

#271Rank in United States

2004-05-12Allocated

Headquarters, USAISC (AS1637) — Unknown, registered in United States. announces 122 IPv4 prefixes + 1 IPv6 prefixes. Rank in United States: #271. Allocated: 2004-05-12.

IPv4 122IPv6 1

Announced prefixes · 123

v4 143.46.48.0/24 unknown
v4 143.46.49.0/24 unknown
v4 143.46.5.0/24 unknown
v4 143.46.50.0/24 unknown
v4 143.46.51.0/24 unknown
v4 143.46.53.0/24 unknown
v4 143.46.60.0/24 unknown
v4 143.46.8.0/23 unknown
v4 143.68.152.0/21 unknown
v4 147.248.24.0/24 unknown
v4 155.20.105.0/24 unknown
v4 155.20.109.0/24 unknown
v4 155.5.0.0/16 unknown
v4 155.5.106.0/24 unknown
v4 155.5.116.0/24 unknown
v4 155.5.122.0/23 unknown
v4 155.5.142.0/23 unknown
v4 155.5.152.0/23 unknown
v4 155.5.17.0/24 unknown
v4 155.5.18.0/24 unknown
v4 155.5.20.0/24 unknown
v4 155.5.21.0/24 unknown
v4 155.5.32.0/24 unknown
v4 155.5.33.0/24 unknown
v4 155.5.35.0/24 unknown
v4 155.5.48.0/24 unknown
v4 155.5.49.0/24 unknown
v4 155.6.0.0/16 unknown
v4 155.6.100.0/24 unknown
v4 155.6.194.0/24 unknown
v4 155.6.20.0/24 unknown
v4 155.6.200.0/24 unknown
v4 155.6.21.0/24 unknown
v4 155.6.210.0/24 unknown
v4 155.6.216.0/24 unknown
v4 155.6.217.0/24 unknown
v4 155.6.218.0/24 unknown
v4 155.6.219.0/24 unknown
v4 155.6.22.0/24 unknown
v4 155.6.220.0/24 unknown
v4 155.6.23.0/24 unknown
v4 155.6.24.0/24 unknown
v4 155.6.240.0/24 unknown
v4 155.6.243.0/24 unknown
v4 155.6.25.0/24 unknown
v4 155.6.26.0/24 unknown
v4 155.6.27.0/24 unknown
v4 155.6.28.0/24 unknown
v4 155.6.29.0/24 unknown
v4 155.6.30.0/24 unknown

— Routing status unavailable

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	123
2026-06-13	123

AS topology · Customer cone 1

Providers · 1

AS27066 United States Department of Defense (DoD)

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