Autonomous System

AS4538

China Education and Research Network Center

China Education and Research Network Center China 🌐 cernet.edu.cn

Announced IPs

17,117,440

CIDR prefixes

ASN

AS4538

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.

59/100

Caution

How this score is built

Baseline (neutral) 65
Active-threat / abuse risk −12
Academic allocation +6
Trust score 59 / 100

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

About China Education and Research Network

The China Education and Research Network is the first nationwide education and research computer network in China. The CERNET project is funded by the Chinese government and directly managed by the Chinese Ministry of Education.

Founded

1994

Official website ↗ Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

⚠ 60 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS4538 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

Prefix	Origin ASNs	Last detected (UTC)
202.179.240.0/20	AS4538, AS24489	2026-10-27 07:51:35
180.208.59.0/24	AS4538, AS133465	2026-10-27 07:51:35
58.206.192.0/18	AS4538, AS24348	2026-10-27 07:51:35
202.179.240.0/21	AS4538, AS24489	2026-10-27 07:51:35
103.252.172.0/22	AS4538, AS133465	2026-10-27 07:51:35
58.154.16.0/20	AS4538, AS151229	2026-10-26 14:06:29
101.7.7.0/24	AS4538, AS9405	2026-10-26 14:06:29
210.34.216.0/22	AS4538, AS24368	2026-10-26 14:06:29
59.73.128.0/19	AS4538, AS151229	2026-10-26 14:06:29
59.73.160.0/21	AS4538, AS151229	2026-10-26 14:06:29
202.199.24.0/21	AS4538, AS151229	2026-10-26 14:06:29
118.229.40.0/22	AS4538, AS38255	2026-10-26 14:06:29
183.172.0.0/16	AS4538, AS24348	2026-10-26 07:21:26
202.118.0.0/16	AS4538, AS24369	2026-10-26 07:21:26
219.229.0.0/16	AS4538, AS24364	2026-10-26 07:21:26

Showing the 15 most recently detected of 60 MOAS prefixes. Many multi-origin prefixes on large networks are benign (anycast); see all MOAS anomalies.

Network profile

Source: PeeringDB →

Network type Educational/Research

Geographic scope Not Disclosed

Traffic ratio Not Disclosed

Peering policy Open

Website ↗

Web3 footprint

AS4538 hosts 2 observed decentralized-network nodes across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

IPFS IPFS 2

Top CIDR ranges

CIDR	IPs	PTR Density	Organization	Country	State	City
58.192.0.0/12	1.05M	0.2%	China Education and Research Network Center	CN	Hubei	Wuhan
59.64.0.0/12	1.05M	0.1%	China Education and Research Network Center	CN	—	—
202.192.0.0/12	1.05M	1.6%	China Education and Research Network Center	CN	Shaanxi	Xi'an
210.32.0.0/12	1.05M	1.8%	China Education and Research Network Center	CN	—	—
222.16.0.0/12	1.05M	0.2%	China Education and Research Network Center	CN	Hubei	Wuhan
222.192.0.0/12	1.05M	0.2%	China Education and Research Network Center	CN	Zhejiang	Hangzhou
125.216.0.0/13	524.3K	0.1%	China Education and Research Network Center	CN	—	—
202.112.0.0/13	524.3K	8.1%	China Education and Research Network Center	CN	Tianjin	Tianjin
211.64.0.0/13	524.3K	0.8%	China Education and Research Network Center	CN	Shandong	Qingdao
211.80.0.0/13	524.3K	1.0%	China Education and Research Network Center	CN	Sichuan	Chengdu
218.192.0.0/13	524.3K	0.8%	China Education and Research Network Center	CN	—	—
219.216.0.0/13	524.3K	5.2%	China Education and Research Network Center	CN	—	—
219.224.0.0/13	524.3K	0.4%	China Education and Research Network Center	CN	—	—
49.52.0.0/14	262.1K	0.0%	China Education and Research Network Center	CN	—	—
49.120.0.0/14	262.1K	0.0%	China Education and Research Network Center	CN	—	—
101.4.0.0/14	262.1K	0.1%	China Education and Research Network Center	CN	—	—
115.24.0.0/14	262.1K	0.2%	China Education and Research Network Center	CN	—	—
121.192.0.0/14	262.1K	0.1%	China Education and Research Network Center	CN	—	—
121.248.0.0/14	262.1K	0.0%	China Education and Research Network Center	CN	—	—
122.204.0.0/14	262.1K	0.0%	China Education and Research Network Center	CN	—	—
183.172.0.0/14	262.1K	0.0%	China Education and Research Network Center	CN	Beijing	Beijing
210.28.0.0/14	262.1K	2.7%	China Education and Research Network Center	CN	—	—
219.244.0.0/14	262.1K	0.4%	China Education and Research Network Center	CN	—	—
1.184.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
42.246.0.0/15	131.1K	0.1%	China Education and Research Network Center	CN	—	—
49.140.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
49.208.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
58.154.0.0/15	131.1K	18.7%	China Education and Research Network Center	CN	—	—
101.4.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
101.76.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
110.64.0.0/15	131.1K	0.2%	China Education and Research Network Center	CN	Guangdong	Guangzhou
111.114.0.0/15	131.1K	0.1%	China Education and Research Network Center	CN	—	—
111.116.0.0/15	131.1K	6.3%	China Education and Research Network Center	CN	—	—
111.186.0.0/15	131.1K	0.2%	China Education and Research Network Center	CN	Shanghai	Shanghai
113.54.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
114.212.0.0/15	131.1K	0.3%	China Education and Research Network Center	CN	—	—
115.154.0.0/15	131.1K	0.1%	China Education and Research Network Center	CN	—	—
115.156.0.0/15	131.1K	0.4%	China Education and Research Network Center	CN	Hubei	Wuhan
116.56.0.0/15	131.1K	0.2%	China Education and Research Network Center	CN	—	—
118.202.0.0/15	131.1K	9.6%	China Education and Research Network Center	CN	—	—
120.94.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
121.48.0.0/15	131.1K	0.1%	China Education and Research Network Center	CN	—	—
175.186.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
180.84.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
180.208.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
183.168.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
202.120.0.0/15	131.1K	3.4%	China Education and Research Network Center	CN	Shanghai	Shanghai
210.26.0.0/15	131.1K	2.5%	China Education and Research Network Center	CN	—	—
219.242.0.0/15	131.1K	0.8%	China Education and Research Network Center	CN	—	—
223.2.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
223.128.0.0/15	131.1K	0.0%	China Education and Research Network Center	CN	—	—
1.51.0.0/16	65.5K	0.0%	China Education and Research Network Center	CN	—	—
42.244.0.0/16	65.5K	0.2%	China Education and Research Network Center	CN	—	—
101.6.0.0/16	65.5K	0.4%	China Education and Research Network Center	CN	—	—
114.214.0.0/16	65.5K	0.4%	China Education and Research Network Center	CN	—	—
115.158.0.0/16	65.5K	0.3%	China Education and Research Network Center	CN	—	—
116.13.0.0/16	65.5K	0.0%	China Education and Research Network Center	CN	—	—
118.228.0.0/16	65.5K	0.1%	China Education and Research Network Center	CN	—	—
118.230.0.0/16	65.5K	0.2%	China Education and Research Network Center	CN	—	—
162.105.0.0/16	65.5K	0.2%	China Education and Research Network Center	CN	—	—
166.111.0.0/16	65.5K	1.7%	China Education and Research Network Center	CN	—	—
175.185.0.0/16	65.5K	0.0%	China Education and Research Network Center	CN	—	—
180.201.0.0/16	65.5K	0.0%	China Education and Research Network Center	CN	Shandong	Qingdao
183.170.0.0/16	65.5K	0.0%	China Education and Research Network Center	CN	—	—
210.25.0.0/16	65.5K	0.0%	China Education and Research Network Center	CN	—	—
42.245.0.0/17	32.8K	0.1%	China Education and Research Network Center	CN	—	—
101.7.128.0/17	32.8K	0.0%	China Education and Research Network Center	CN	—	—
118.229.128.0/17	32.8K	0.3%	China Education and Research Network Center	CN	—	—
42.245.128.0/18	16.4K	0.0%	China Education and Research Network Center	CN	—	—
101.7.64.0/18	16.4K	0.0%	China Education and Research Network Center	CN	—	—
118.229.64.0/18	16.4K	0.3%	China Education and Research Network Center	CN	—	—
202.38.64.0/18	16.4K	0.8%	China Education and Research Network Center	CN	—	—
202.38.192.0/18	16.4K	99.2%	China Education and Research Network Center	CN	—	—
210.25.192.0/18	16.4K	0.0%	China Education and Research Network Center	CN	—	—
101.7.32.0/19	8.2K	0.0%	China Education and Research Network Center	CN	—	—
118.229.0.0/19	8.2K	0.2%	China Education and Research Network Center	CN	—	—
121.52.160.0/19	8.2K	0.0%	China Education and Research Network Center	CN	—	—
202.4.128.0/19	8.2K	0.0%	China Education and Research Network Center	CN	—	—
202.127.224.0/19	8.2K	0.0%	China Education and Research Network Center	CN	—	—
210.25.128.0/19	8.2K	0.1%	China Education and Research Network Center	CN	—	—
101.7.16.0/20	4.1K	0.0%	China Education and Research Network Center	CN	—	—
118.229.48.0/20	4.1K	0.3%	China Education and Research Network Center	CN	—	—
210.25.160.0/20	4.1K	0.0%	China Education and Research Network Center	CN	—	—
101.7.8.0/21	2.0K	0.0%	China Education and Research Network Center	CN	—	—
118.229.32.0/21	2.0K	0.1%	China Education and Research Network Center	CN	—	—
202.38.184.0/21	2.0K	2.1%	China Education and Research Network Center	CN	—	—
203.91.120.0/21	2.0K	0.1%	China Education and Research Network Center	CN	—	—
210.25.176.0/21	2.0K	0.0%	China Education and Research Network Center	CN	—	—
101.7.0.0/22	1.0K	0.0%	China Education and Research Network Center	CN	—	—
103.31.48.0/22	1.0K	0.0%	China Education and Research Network Center	CN	—	—
103.252.172.0/22	1.0K	3.5%	China Education and Research Network Center	CN	—	—
101.7.4.0/23	512	0.0%	China Education and Research Network Center	CN	—	—
103.165.110.0/23	512	0.0%	China Education and Research Network Center	CN	—	—
202.38.2.0/23	512	0.0%	China Education and Research Network Center	CN	—	—
202.38.140.0/23	512	8.0%	China Education and Research Network Center	CN	—	—
210.25.184.0/23	512	0.0%	China Education and Research Network Center	CN	—	—
210.25.190.0/23	512	0.0%	China Education and Research Network Center	CN	—	—
101.7.6.0/24	256	0.0%	China Education and Research Network Center	CN	—	—
103.137.60.0/24	256	1.6%	China Education and Research Network Center	CN	—	—
210.25.186.0/24	256	0.0%	China Education and Research Network Center	CN	—	—

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS4538 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

Prefix	Announcement samples	Last seen
58.206.132.0/24	685,874	2026-10-27 07:40:21
202.38.64.0/19	674,014	2026-10-27 07:40:27
202.127.240.0/20	636,468	2026-10-27 07:40:31
58.207.0.0/16	499,799	2026-10-27 07:40:27
222.17.0.0/16	498,211	2026-10-27 07:40:27
202.116.0.0/15	434,480	2026-10-27 07:40:32
202.118.0.0/15	434,376	2026-10-27 07:40:32
202.121.0.0/16	427,311	2026-10-27 07:40:27
202.120.0.0/16	427,199	2026-10-27 07:40:27
202.118.0.0/16	425,188	2026-10-27 07:40:27
202.127.224.0/19	249,822	2026-10-27 07:37:32
58.200.0.0/13	246,475	2026-10-27 07:37:32
210.32.128.0/18	236,504	2026-10-27 07:40:46
202.192.0.0/13	217,359	2026-10-27 03:49:32
202.202.0.0/16	213,880	2026-10-27 05:02:34
202.193.0.0/16	213,592	2026-10-27 05:02:34
202.203.0.0/16	212,587	2026-10-27 05:02:34
125.217.0.0/16	212,063	2026-10-27 07:40:14
125.216.0.0/16	211,613	2026-10-27 07:40:14
125.218.0.0/16	211,511	2026-10-27 07:40:14
59.68.232.0/23	211,254	2026-10-27 07:40:14
125.221.40.0/23	211,027	2026-10-27 07:40:14
125.221.10.0/23	210,564	2026-10-27 07:40:14
125.221.40.0/24	209,708	2026-10-27 07:40:14
222.205.0.0/16	209,250	2026-10-27 03:49:34
222.204.0.0/16	209,195	2026-10-27 03:49:34
202.112.0.0/24	208,218	2026-10-27 07:40:18
59.71.128.0/17	207,149	2026-10-27 07:40:14
113.54.128.0/17	204,575	2026-10-27 07:40:18
116.56.0.0/18	204,270	2026-10-27 07:40:14
202.119.32.0/19	201,246	2026-10-27 07:40:14
121.49.64.0/18	200,946	2026-10-27 07:40:18
59.68.160.0/21	200,571	2026-10-27 07:40:14
183.168.0.0/18	199,781	2026-10-27 07:40:14
111.186.0.0/18	199,271	2026-10-27 07:40:20
59.68.0.0/18	198,156	2026-10-27 07:40:14
125.220.192.0/18	198,083	2026-10-27 07:40:14
59.68.228.0/22	197,730	2026-10-27 07:40:14
110.65.0.0/18	197,696	2026-10-27 07:40:14
58.194.8.0/23	197,483	2026-10-27 07:40:14
59.69.64.0/18	197,237	2026-10-27 07:40:14
110.64.207.0/24	196,725	2026-10-27 07:40:14
110.64.152.0/24	196,472	2026-10-27 07:40:14
110.64.160.0/20	196,364	2026-10-27 07:40:14
116.57.48.0/20	196,330	2026-10-27 07:40:14
122.204.0.0/19	196,315	2026-10-27 07:40:14
116.56.96.0/19	196,193	2026-10-27 07:40:14
125.216.192.0/20	196,155	2026-10-27 07:40:14
122.204.144.0/20	196,105	2026-10-27 07:40:14
110.64.0.0/20	196,058	2026-10-27 07:40:14

Showing top 50 of 5,394 announced prefixes by sample volume.

Frequently Asked Questions

What is AS4538?

AS4538 is an Autonomous System Number assigned to China Education and Research Network Center. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS4538 announce?

AS4538 announces 17.12M IPv4 addresses distributed across 88 routed CIDR prefixes. The network is registered in China.

Who operates AS4538?

AS4538 is operated by China Education and Research Network Center. The organization is based in China. You can view all IP ranges and related ASNs on the organization page.

What country is AS4538 registered in?

AS4538 is registered in China. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-27 07:54:05 UTC