AS4 University of Southern California 🇺🇸 US

Announcing 53 prefixes, seen at the RIS collectors.

IPv4 prefixes
45
70,400 (275 × /24)
IPv6 prefixes
8
2 × /32
Upstreams
9
transit providers observed
Peers
2
settlement-free adjacencies
Downstreams
3
transit customers observed
Customer cone
3
ASes reachable through it

Registry and operator data

AS number
AS4
Name
University of Southern California
Organisation
University of Southern California - AS4
Country
🇺🇸 US
RIR
ARIN
Allocated
1984-02-22
Scope
Not Disclosed
Peering policy
Open
Website
http://usc.edu
PeeringDB
net/14507

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

1 valid (1.9%) 0 invalid (0.0%) 52 no ROA (98.1%)

Announced prefixes

53 in total

Prefix RPKI Peers Sample path First seen
128.9.0.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.16.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.17.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.18.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.19.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.26.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.28.0/23 v4 no ROA 44 3454929142264 2026-09-18
128.9.30.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.31.0/24 v4 no ROA 42 345491744 2026-09-18
128.9.32.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.34.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.35.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.36.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.37.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.38.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.40.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.43.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.44.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.46.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.47.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.48.0/20 v4 no ROA 43 345496461108864 2026-09-18
128.9.64.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.80.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.96.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.112.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.113.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.117.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.122.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.123.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.127.0/24 v4 no ROA 44 3454929142264 2026-09-18
128.9.128.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.144.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.160.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.176.0/20 v4 no ROA 44 3454929142264 2026-09-18
128.9.192.0/18 v4 no ROA 44 3454929142264 2026-09-18
165.140.12.0/24 v4 no ROA 3 202365506731744002154 2026-09-18
165.140.13.0/24 v4 no ROA 2 202365506731744002154 2026-09-18
165.140.14.0/24 v4 no ROA 3 202365506731744002154 2026-09-18
170.79.218.0/23 v4 no ROA 7 3800137468618322651472663064 2026-10-10
191.7.35.0/24 v4 no ROA 1 4439340175310312691942733942758604 2026-10-24
198.32.16.0/24 v4 no ROA 44 3454929142264 2026-09-18
206.117.6.0/24 v4 no ROA 44 3454929142264 2026-09-18
206.117.27.0/24 v4 no ROA 44 3454929142264 2026-09-18
206.117.31.0/24 v4 no ROA 44 3454929142264 2026-09-18
206.117.37.0/24 v4 no ROA 44 3454929142264 2026-09-18
2001:500:202::/48 v6 RPKI valid 34 3800129142264 2026-09-18
2001:1878:401::/48 v6 no ROA 10 37721646121525674 2026-09-18
2001:1878:402::/48 v6 no ROA 10 37721646121525674 2026-09-18
2001:1878:403::/48 v6 no ROA 10 37721646121525674 2026-09-18
2001:1878:404::/48 v6 no ROA 10 37721646121525674 2026-09-18
2606:d5c0::/32 v6 no ROA 34 3800129142264 2026-09-18
2606:d5c0::/48 v6 no ROA 6 37721646121525674 2026-09-18
2804:3edc::/32 v6 no ROA 19 38001137409270735616422666254 2026-09-18