AS4
University of Southern California
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Active-threat / abuse risk −12
- Academic allocation +6
- Trust score 59 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About University of Southern California
The University of Southern California is a private research university in Los Angeles, California, United States. Founded in 1880 by Robert M.
⚠ 6 Prefijo MOASes — múltiples ASNs de origen detectados
Todas las anomalías MOAS →Un prefijo previamente estable originado por AS4 es ahora también anunciado por otro ASN (MOAS — Multiple-Origin AS), detectado por nuestros colectores RIPE RIS. A menudo es benigno (anycast, multi-homing o una transferencia reciente), pero puede indicar una fuga de ruta o un secuestro de prefijo, por lo que vale la pena investigarlo.
| Prefijo | ASNs de origen | Última detección (UTC) |
|---|---|---|
| 165.140.14.0/24 | AS4, AS400215 | 2026-09-11 21:25:58 |
| 196.13.137.0/24 | AS4, AS327753 | 2026-09-11 21:25:58 |
| 170.79.218.0/23 | AS4, AS266306 | 2026-09-11 21:25:58 |
| 165.140.12.0/24 | AS4, AS400215 | 2026-09-11 21:25:58 |
| 165.140.13.0/24 | AS4, AS400215 | 2026-09-11 21:25:58 |
| 196.13.136.0/24 | AS4, AS327753 | 2026-09-11 21:25:58 |
Network profile
Source: PeeringDB →Principales rangos CIDR
| CIDR | IPs | PTR Density | Organización | País | State | City |
|---|---|---|---|---|---|---|
| 128.9.128.0/17 | 32.8K |
7.2%
|
University of Southern California | US | — | — |
| 128.9.64.0/18 | 16.4K |
3.9%
|
University of Southern California | US | — | — |
| 128.9.32.0/19 | 8.2K |
3.4%
|
University of Southern California | US | Virginia | Vienna |
| 128.9.0.0/20 | 4.1K |
0.0%
|
University of Southern California | US | — | — |
| 128.9.16.0/22 | 1.0K |
12.1%
|
University of Southern California | US | California | Los Angeles |
| 128.9.28.0/22 | 1.0K |
13.5%
|
University of Southern California | US | — | — |
| 45.228.74.0/24 | 256 |
0.0%
|
University of Southern California | AR | Cordoba | Las Perdices |
| 128.9.26.0/24 | 256 |
0.0%
|
University of Southern California | US | — | — |
| 198.32.16.0/24 | 256 |
0.0%
|
University of Southern California | US | — | — |
| 206.117.6.0/24 | 256 |
62.9%
|
University of Southern California | US | — | — |
| 206.117.27.0/24 | 256 |
30.9%
|
University of Southern California | US | — | — |
| 206.117.31.0/24 | 256 |
45.7%
|
University of Southern California | US | — | — |
| 206.117.37.0/24 | 256 |
2.0%
|
University of Southern California | US | — | — |
Prefijos BGP anunciados
Anomalías BGP en vivo →Prefijos AS4 se origina realmente en BGP, observado a través de nuestros colectores RIPE RIS. Esta vista de enrutamiento en vivo puede diferir de la asignación de registro anterior.
| Prefix | Muestras de anuncio | Última vez visto |
|---|---|---|
| 170.79.218.0/23 | 34,475 | 2026-09-11 20:08:23 |
| 128.9.31.0/24 | 24,515 | 2026-09-11 20:23:07 |
| 128.9.32.0/20 | 19,752 | 2026-09-11 20:50:34 |
| 206.117.6.0/24 | 12,968 | 2026-09-11 21:24:01 |
| 206.117.27.0/24 | 12,696 | 2026-09-11 21:24:01 |
| 206.117.37.0/24 | 12,598 | 2026-09-11 21:24:01 |
| 128.9.96.0/20 | 12,466 | 2026-09-11 20:50:34 |
| 128.9.64.0/20 | 11,849 | 2026-09-11 20:50:34 |
| 128.9.112.0/20 | 11,816 | 2026-09-11 20:50:34 |
| 128.9.176.0/20 | 11,784 | 2026-09-11 20:50:34 |
| 128.9.144.0/20 | 11,764 | 2026-09-11 20:50:34 |
| 128.9.0.0/20 | 11,742 | 2026-09-11 20:50:34 |
| 128.9.26.0/24 | 11,674 | 2026-09-11 20:50:34 |
| 128.9.128.0/20 | 11,671 | 2026-09-11 20:50:34 |
| 128.9.160.0/20 | 11,648 | 2026-09-11 20:50:34 |
| 128.9.80.0/20 | 11,647 | 2026-09-11 20:50:34 |
| 128.9.19.0/24 | 11,246 | 2026-09-11 21:24:01 |
| 206.117.31.0/24 | 11,198 | 2026-09-11 20:50:34 |
| 198.32.16.0/24 | 10,967 | 2026-09-11 20:50:34 |
| 128.9.48.0/20 | 10,037 | 2026-09-11 21:24:51 |
| 128.9.28.0/23 | 9,250 | 2026-09-11 20:50:34 |
| 128.9.30.0/24 | 9,250 | 2026-09-11 20:50:34 |
| 128.9.17.0/24 | 9,211 | 2026-09-11 20:50:34 |
| 128.9.16.0/24 | 9,208 | 2026-09-11 20:50:34 |
| 128.9.18.0/24 | 9,173 | 2026-09-11 20:50:34 |
| 128.9.43.0/24 | 9,012 | 2026-09-11 20:50:34 |
| 128.9.44.0/24 | 8,977 | 2026-09-11 20:50:34 |
| 128.9.38.0/24 | 8,918 | 2026-09-11 20:50:34 |
| 128.9.40.0/24 | 8,901 | 2026-09-11 20:50:34 |
| 128.9.37.0/24 | 8,883 | 2026-09-11 20:50:34 |
| 128.9.34.0/24 | 8,861 | 2026-09-11 20:50:34 |
| 128.9.122.0/24 | 8,851 | 2026-09-11 20:50:34 |
| 128.9.35.0/24 | 8,847 | 2026-09-11 20:50:34 |
| 128.9.127.0/24 | 8,835 | 2026-09-11 20:50:34 |
| 128.9.36.0/24 | 8,826 | 2026-09-11 20:50:34 |
| 128.9.123.0/24 | 8,824 | 2026-09-11 20:50:34 |
| 128.9.46.0/24 | 8,822 | 2026-09-11 20:50:34 |
| 128.9.192.0/18 | 8,821 | 2026-09-11 20:50:34 |
| 128.9.117.0/24 | 8,812 | 2026-09-11 20:50:34 |
| 128.9.47.0/24 | 8,811 | 2026-09-11 20:50:34 |
| 128.9.113.0/24 | 8,809 | 2026-09-11 20:50:34 |
| 196.13.137.0/24 | 8,296 | 2026-06-11 11:01:08 |
| 45.228.74.0/24 | 3,254 | 2026-08-11 13:42:24 |
| 45.228.73.0/24 | 3,171 | 2026-08-11 13:42:24 |
| 45.228.75.0/24 | 2,949 | 2026-08-11 13:42:24 |
| 103.195.255.0/24 | 1,724 | 2026-05-26 02:48:47 |
| 165.140.14.0/24 | 1,313 | 2026-09-11 19:20:56 |
| 165.140.12.0/24 | 1,311 | 2026-09-11 19:20:56 |
| 193.7.185.0/24 | 1,200 | 2026-08-15 05:50:21 |
| 103.199.226.0/23 | 1,124 | 2026-07-17 17:28:05 |
Mostrando los principales 50 of 66 prefijos anunciados por volumen de muestra.
Frequently Asked Questions
¿Qué es AS4?
AS4 es un Número de Sistema Autónomo asignado a University of Southern California. Un ASN identifica una red que controla un conjunto específico de direcciones IP y determina cómo se enruta el tráfico a través de internet mediante BGP (Border Gateway Protocol).
¿Cuántas direcciones IP anuncia AS4?
AS4 anuncia 65.3K direcciones IPv4 distribuidas en 13 prefijos CIDR enrutados. La red está registrada en United States.
¿Quién opera AS4?
AS4 es operado por University of Southern California. La organización tiene su sede en United States. Puedes ver todos los rangos de IP y los ASNs relacionados en la página de la organización.
¿En qué país está registrado AS4?
AS4 está registrado en United States. Esto indica dónde tiene su sede el operador de red, aunque las direcciones IP que anuncia pueden servir a usuarios a nivel global.
