AS21896

Name: AS21896 — Alliant Energy
Creator: ipdex

Alliant Energy Unknown registered in United States

8IPv4 prefixes

0IPv6 prefixes

#21,160AS Rank

327/327RIS visibility

#3,808Rank in United States

2009-01-08Allocated

Alliant Energy (AS21896) — Unknown, registered in United States. announces 8 IPv4 prefixes + 0 IPv6 prefixes. Rank in United States: #3808. Allocated: 2009-01-08.

IPv4 8IPv6 0

Announced prefixes · 8

v4 198.7.38.0/23 unknown
v4 198.7.42.0/23 unknown
v4 198.7.44.0/23 unknown
v4 198.7.46.0/23 unknown
v4 207.71.128.0/23 unknown
v4 207.71.134.0/23 unknown
v4 207.71.136.0/23 unknown
v4 207.71.142.0/23 unknown

Routing: 8 IPv4 · 0 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

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	8
2026-06-13	8

AS topology · Customer cone 1

Providers · 4

AS3356 Level 3 Parent, LLC
AS40264 Charter Communications LLC
AS4181 TDS TELECOM
AS393238 ImOn Communications, LLC

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