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
- Multiple-origin (MOAS) routing anomaly −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 MOAS 前缀es — 检测到多源 ASNs
所有 MOAS 异常 →此前由 AS4 公告的稳定前缀现在也由另一个 ASN 公告（MOAS — 多源 AS），这是通过我们的 RIPE RIS 收集器检测到的。这通常是良性的（任播、多宿主或近期转移）—— 但它可能预示着路由泄漏或前缀劫持，因此值得检查。
| 前缀 | 源 ASNs | 最后检测 (UTC) |
|---|---|---|
| 165.140.14.0/24 | AS4, AS400215 | 2026-07-26 05:39:03 |
| 170.79.218.0/23 | AS4, AS266306 | 2026-07-26 05:39:03 |
| 165.140.12.0/24 | AS4, AS400215 | 2026-07-26 05:39:03 |
| 165.140.13.0/24 | AS4, AS400215 | 2026-07-26 05:39:03 |
| 196.13.136.0/24 | AS4, AS327753 | 2026-07-26 05:39:03 |
| 43.240.64.0/24 | AS4, AS133296 | 2026-07-25 17:23:58 |
Network profile
Source: PeeringDB →热门 CIDR 范围
| CIDR | IP 地址 | PTR Density | 组织 | 国家 | 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 | — | — |
| 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 | — | — |
BGP 公告前缀
实时 BGP 异常 →前缀 AS4 实际源自 BGP，通过我们的 RIPE RIS 收集器观测。此实时路由视图可能与上述注册分配有所不同。
| Prefix | 公告样本 | 最后观测 |
|---|---|---|
| 170.79.218.0/23 | 21,452 | 2026-07-26 04:48:30 |
| 128.9.32.0/20 | 14,709 | 2026-07-26 04:16:14 |
| 128.9.31.0/24 | 9,916 | 2026-07-26 05:33:51 |
| 196.13.137.0/24 | 8,296 | 2026-06-11 11:01:08 |
| 128.9.96.0/20 | 7,520 | 2026-07-26 04:16:14 |
| 206.117.31.0/24 | 6,877 | 2026-07-26 04:16:14 |
| 128.9.48.0/20 | 6,857 | 2026-07-26 04:17:57 |
| 128.9.64.0/20 | 6,815 | 2026-07-26 04:16:14 |
| 128.9.26.0/24 | 6,811 | 2026-07-26 04:16:14 |
| 128.9.176.0/20 | 6,785 | 2026-07-26 04:16:14 |
| 128.9.112.0/20 | 6,785 | 2026-07-26 04:16:14 |
| 128.9.144.0/20 | 6,767 | 2026-07-26 04:16:14 |
| 128.9.0.0/20 | 6,754 | 2026-07-26 04:16:14 |
| 206.117.27.0/24 | 6,734 | 2026-07-26 04:16:14 |
| 198.32.16.0/24 | 6,701 | 2026-07-26 04:16:14 |
| 128.9.128.0/20 | 6,682 | 2026-07-26 04:16:14 |
| 128.9.160.0/20 | 6,662 | 2026-07-26 04:16:14 |
| 206.117.6.0/24 | 6,646 | 2026-07-26 04:16:14 |
| 128.9.80.0/20 | 6,645 | 2026-07-26 04:16:14 |
| 206.117.37.0/24 | 6,603 | 2026-07-26 04:16:14 |
| 128.9.30.0/24 | 4,281 | 2026-07-26 04:16:14 |
| 128.9.28.0/23 | 4,275 | 2026-07-26 04:16:14 |
| 128.9.17.0/24 | 4,271 | 2026-07-26 04:16:14 |
| 128.9.16.0/24 | 4,270 | 2026-07-26 04:16:14 |
| 128.9.18.0/24 | 4,234 | 2026-07-26 04:16:14 |
| 128.9.43.0/24 | 4,037 | 2026-07-26 04:16:14 |
| 128.9.44.0/24 | 4,029 | 2026-07-26 04:16:14 |
| 128.9.40.0/24 | 4,012 | 2026-07-26 04:16:14 |
| 128.9.37.0/24 | 4,004 | 2026-07-26 04:16:14 |
| 128.9.38.0/24 | 4,003 | 2026-07-26 04:16:14 |
| 128.9.35.0/24 | 3,981 | 2026-07-26 04:16:14 |
| 128.9.34.0/24 | 3,972 | 2026-07-26 04:16:14 |
| 128.9.127.0/24 | 3,965 | 2026-07-26 04:16:14 |
| 128.9.36.0/24 | 3,953 | 2026-07-26 04:16:14 |
| 128.9.122.0/24 | 3,950 | 2026-07-26 04:16:14 |
| 128.9.46.0/24 | 3,949 | 2026-07-26 04:16:14 |
| 128.9.47.0/24 | 3,948 | 2026-07-26 04:16:14 |
| 128.9.192.0/18 | 3,945 | 2026-07-26 04:16:14 |
| 128.9.19.0/24 | 3,933 | 2026-07-26 04:16:14 |
| 128.9.113.0/24 | 3,932 | 2026-07-26 04:16:14 |
| 128.9.123.0/24 | 3,931 | 2026-07-26 04:16:14 |
| 128.9.117.0/24 | 3,930 | 2026-07-26 04:16:14 |
| 45.228.74.0/24 | 2,515 | 2026-07-25 06:05:51 |
| 45.228.73.0/24 | 2,475 | 2026-07-25 14:14:42 |
| 45.228.75.0/24 | 2,231 | 2026-07-25 06:05:51 |
| 103.195.255.0/24 | 1,724 | 2026-05-26 02:48:47 |
| 103.199.226.0/23 | 1,124 | 2026-07-17 17:28:05 |
| 165.140.12.0/24 | 847 | 2026-07-26 00:21:26 |
| 165.140.14.0/24 | 847 | 2026-07-26 00:21:26 |
| 165.140.13.0/24 | 561 | 2026-07-26 00:21:27 |
显示前 50 of 63 按样本量公告的前缀。
Frequently Asked Questions
什么是 AS4？
AS4 是分配给 University of Southern California 的自治系统编号 (Autonomous System Number)。ASN 标识一个控制特定 IP 地址集的网络，并通过 BGP（边界网关协议）确定流量如何在互联网上传输。
AS4 公告了多少个 IP 地址？
AS4 公告了 65.3K 个 IPv4 地址，分布在 13 个路由 CIDR 前缀中。 该网络在 United States 注册。
谁运营 AS4？
AS4 由 University of Southern California 运营。 该组织总部位于 United States。 您可以在组织页面查看所有 IP 范围和相关 ASNs。
AS4 在哪个国家注册？
AS4 在 United States 注册。这表明网络运营商的总部所在地，尽管其公告的 IP 地址可能服务全球用户。
