ASN 概况ASN overview

AS4538

名称NameERX-CERNET-BKB - China Education and Research Network Center

归属国CountryCN

网络类型Network type政府 / 教育government / education

IOC 信誉IOC reputation干净clean

IP 前缀IP prefixes

5933

IPv4 5039 / IPv6 894

类型置信度Type confidence

0.70

政府 / 教育government / education

IOC 命中IOC hits

密度 0.0000density 0.0000

这个 ASN 是什么

自治系统（ASN，Autonomous System Number）是互联网上一组由同一机构统一路由策略管理的 IP 网络的编号，是 IP 归属与信誉判断的基础单位。AS4538 由 ERX-CERNET-BKB - China Education and Research Network Center 运营，注册地 CN，对外宣告 5933 个 BGP 前缀（IPv4 5039 个 / IPv6 894 个）。

类型与纯净度含义

它被归类为政府 / 教育类网络——通常对应真实终端用户接入（家宽 / 移动）。这类网段的 IP 纯净度普遍较高，但具体到单个 IP 仍可能因被滥用、做住宅代理或被列入威胁情报而异常。

IOC 信誉

当前 IOC 信誉为干净。信誉基于该 ASN 下命中威胁情报的前缀密度估算，**只反映网络整体洁净度**，不代表其中每个 IP 的具体判定——单个 IP 的纯净度、是否 VPN/代理、地理位置请单独查询。

查询该 ASN 下的具体 IP

想知道某个具体 IP 是否干净、是否为 VPN / 代理出口、归属与地理位置，在首页输入该 IP，或运行完整深度检测。

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What is this ASN?

An Autonomous System Number (ASN) identifies a group of IP networks under a single organization's routing policy — the basic unit for IP ownership and reputation. AS4538 is operated by ERX-CERNET-BKB - China Education and Research Network Center, registered in CN, and announces 5933 BGP prefixes (5039 IPv4 / 894 IPv6).

Type & cleanliness

It is classified as government / education — typically real end-user access (home broadband / mobile). IPs here tend to be cleaner, though an individual IP can still be flagged if it is abused, used as a residential proxy, or listed in threat intelligence.

IOC reputation

The current IOC reputation is clean. It is estimated from the density of threat-flagged prefixes and reflects only the network's overall hygiene — not the verdict for any single IP. Check an individual IP for its cleanliness, VPN/proxy status and location.

Look up a specific IP in this ASN

To check whether a specific IP is clean, a VPN / proxy exit, and where it is located, enter it on the home page or run a full deep check.

← Back to IP cleanliness check

AS4538 · ERX-CERNET-BKB - China Education and Research Network Center