AS4

Name: AS4 — University of Southern California
Creator: ipdex

University of Southern California Unknown registered in United States

40IPv4 prefixes

5IPv6 prefixes

2%RPKI-valid

#7,788AS Rank

327/327RIS visibility

#757Rank in United States

1984-02-22Allocated

University of Southern California (AS4) — Unknown, registered in United States. announces 40 IPv4 prefixes + 5 IPv6 prefixes. Rank in United States: #757. Allocated: 1984-02-22.

IPv4 40IPv6 5

Announced prefixes · 45

v4 128.9.0.0/20 unknown
v4 128.9.112.0/20 unknown
v4 128.9.113.0/24 unknown
v4 128.9.117.0/24 unknown
v4 128.9.122.0/24 unknown
v4 128.9.123.0/24 unknown
v4 128.9.127.0/24 unknown
v4 128.9.128.0/20 unknown
v4 128.9.144.0/20 unknown
v4 128.9.16.0/24 unknown
v4 128.9.160.0/20 unknown
v4 128.9.17.0/24 unknown
v4 128.9.176.0/20 unknown
v4 128.9.18.0/24 unknown
v4 128.9.19.0/24 unknown
v4 128.9.192.0/18 unknown
v4 128.9.26.0/24 unknown
v4 128.9.28.0/23 unknown
v4 128.9.30.0/24 unknown
v4 128.9.31.0/24 unknown
v4 128.9.32.0/20 unknown
v4 128.9.34.0/24 unknown
v4 128.9.35.0/24 unknown
v4 128.9.36.0/24 unknown
v4 128.9.37.0/24 unknown
v4 128.9.38.0/24 unknown
v4 128.9.40.0/24 unknown
v4 128.9.43.0/24 unknown
v4 128.9.44.0/24 unknown
v4 128.9.46.0/24 unknown
v4 128.9.47.0/24 unknown
v4 128.9.48.0/20 unknown
v4 128.9.64.0/20 unknown
v4 128.9.80.0/20 unknown
v4 128.9.96.0/20 unknown
v4 198.32.16.0/24 unknown
v4 206.117.27.0/24 unknown
v4 206.117.31.0/24 unknown
v4 206.117.37.0/24 unknown
v4 206.117.6.0/24 unknown
v6 2001:1878:401::/48 unknown
v6 2001:1878:402::/48 unknown
v6 2001:1878:403::/48 unknown
v6 2001:1878:404::/48 unknown
v6 2001:500:202::/48 valid

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 44 IPv4 · 7 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	45
2026-06-13	45

AS topology · Customer cone 2

Providers · 9

AS174 Cogent Communications, LLC
AS30844 Liquid Telecommunications Ltd
AS10886 University of Maryland
AS567
AS226 Los Nettos
AS327753 SBM BANK (KENYA) LIMITED

Peers · 1

AS133296 Web Werks India Pvt. Ltd.

Customers · 1

AS2635 Automattic, Inc

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