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BGP Prefix Lookup

Enter a prefix (or a single address). Answered from our daily copy of the global routing table.

Examples:

119.120.0.0/13

One collector's view (APNIC). A route filtered before it reaches that collector is not listed.

Announced exactly

Registry
APNIC · China · Feb 7, 2008
Delegated block
119.120.0.0 – 119.127.255.255

Covering routes

0

No less-specific route covers it.

More-specific routes

46 more-specifics from 8 origin AS(es)
  • 119.120.192.0/18AS140311CHINATELECOM-GUANGDONG-JIANGMEN-5G-NETWORK CHINATELECOM Guangdong province Jiangmen 5G networkRPKI Valid119.120.192.0
  • 119.121.0.0/17AS4809CHINATELECOM-CORE-WAN-CN2 China Telecom Next Generation Carrier NetworkRPKI Valid119.121.0.0
  • 119.121.63.0/24AS140308CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK CHINATELECOM Guangdong province Zhuhai 5G networkRPKI Valid119.121.63.0
  • 119.121.64.0/23AS140308CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK CHINATELECOM Guangdong province Zhuhai 5G networkRPKI Valid119.121.64.0
  • 119.121.66.0/24AS140308CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK CHINATELECOM Guangdong province Zhuhai 5G networkRPKI Valid119.121.66.0
  • 119.121.67.0/24AS140311CHINATELECOM-GUANGDONG-JIANGMEN-5G-NETWORK CHINATELECOM Guangdong province Jiangmen 5G networkRPKI Valid119.121.67.0
  • 119.121.68.0/23AS140311CHINATELECOM-GUANGDONG-JIANGMEN-5G-NETWORK CHINATELECOM Guangdong province Jiangmen 5G networkRPKI Valid119.121.68.0
  • 119.121.95.0/24AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.121.95.0
  • 119.121.96.0/23AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.121.96.0
  • 119.121.98.0/24AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.121.98.0
  • 119.121.109.0/24AS136199CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN networkRPKI Valid119.121.109.0
  • 119.121.110.0/23AS136199CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN networkRPKI Valid119.121.110.0
  • 119.121.112.0/23AS136199CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN networkRPKI Valid119.121.112.0
  • 119.121.114.0/24AS136199CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN networkRPKI Valid119.121.114.0
  • 119.121.187.0/24AS140309CHINATELECOM-GUANGDONG-ZHONGSHAN-5G-NETWORK CHINATELECOM Guangdong province Zhongshan 5G networkRPKI Not found119.121.187.0
  • 119.121.188.0/23AS140309CHINATELECOM-GUANGDONG-ZHONGSHAN-5G-NETWORK CHINATELECOM Guangdong province Zhongshan 5G networkRPKI Not found119.121.188.0
  • 119.121.190.0/24AS140309CHINATELECOM-GUANGDONG-ZHONGSHAN-5G-NETWORK CHINATELECOM Guangdong province Zhongshan 5G networkRPKI Not found119.121.190.0
  • 119.121.191.0/24AS140308CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK CHINATELECOM Guangdong province Zhuhai 5G networkRPKI Valid119.121.191.0
  • 119.121.192.0/23AS140308CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK CHINATELECOM Guangdong province Zhuhai 5G networkRPKI Valid119.121.192.0
  • 119.121.194.0/24AS140308CHINATELECOM-GUANGDONG-ZHUHAI-5G-NETWORK CHINATELECOM Guangdong province Zhuhai 5G networkRPKI Valid119.121.194.0
  • 119.121.195.0/24AS140311CHINATELECOM-GUANGDONG-JIANGMEN-5G-NETWORK CHINATELECOM Guangdong province Jiangmen 5G networkRPKI Valid119.121.195.0
  • 119.121.196.0/23AS140311CHINATELECOM-GUANGDONG-JIANGMEN-5G-NETWORK CHINATELECOM Guangdong province Jiangmen 5G networkRPKI Valid119.121.196.0
  • 119.121.219.0/24AS140318CHINATELECOM-GUANGDONG-HEYUAN-5G-NETWORK CHINATELECOM Guangdong province Heyuan 5G networkRPKI Not found119.121.219.0
  • 119.121.220.0/23AS140318CHINATELECOM-GUANGDONG-HEYUAN-5G-NETWORK CHINATELECOM Guangdong province Heyuan 5G networkRPKI Not found119.121.220.0
  • 119.121.222.0/24AS140318CHINATELECOM-GUANGDONG-HEYUAN-5G-NETWORK CHINATELECOM Guangdong province Heyuan 5G networkRPKI Not found119.121.222.0
  • 119.121.223.0/24AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.121.223.0
  • 119.121.224.0/23AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.121.224.0
  • 119.121.226.0/24AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.121.226.0
  • 119.121.234.0/23AS140320CHINATELECOM-GUANGDONG-SHANWEI-5G-NETWORK CHINATELECOM Guangdong province Shanwei 5G networkRPKI Not found119.121.234.0
  • 119.121.236.0/24AS140320CHINATELECOM-GUANGDONG-SHANWEI-5G-NETWORK CHINATELECOM Guangdong province Shanwei 5G networkRPKI Not found119.121.236.0
  • 119.121.237.0/24AS136199CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN networkRPKI Valid119.121.237.0
  • 119.121.238.0/23AS136199CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN networkRPKI Valid119.121.238.0
  • 119.121.240.0/23AS136199CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN networkRPKI Valid119.121.240.0
  • 119.121.242.0/24AS136199CHINANET-GUANGDONG-YUEDONG-MAN CHINANET Guangdong province Yuedong MAN networkRPKI Valid119.121.242.0
  • 119.124.176.0/22AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.176.0
  • 119.124.180.0/22AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.180.0
  • 119.124.184.0/22AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.184.0
  • 119.124.188.0/22AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.188.0
  • 119.124.192.0/21AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.192.0
  • 119.124.200.0/21AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.200.0
  • 119.124.208.0/21AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.208.0
  • 119.124.216.0/21AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.216.0
  • 119.124.224.0/21AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.224.0
  • 119.124.232.0/21AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.232.0
  • 119.124.240.0/21AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.240.0
  • 119.124.248.0/21AS140319CHINATELECOM-GUANGDONG-QINGYUAN-5G-NETWORK CHINATELECOM Guangdong province Qingyuan 5G networkRPKI Valid119.124.248.0

On the internet, routes are announced as prefixes: an autonomous system tells its neighbours via BGP that it can deliver traffic for, say, 193.166.0.0/15. This tool looks a prefix up in our daily copy of the global routing table and shows three things:

  • Exact announcements: which AS originates exactly this prefix. More than one origin (a MOAS) is normal for anycast services and some multihomed networks, and suspicious otherwise.
  • Covering routes: less-specific announcements that contain it. Traffic follows the most specific route, so a covering route matters if the more-specific one disappears.
  • More-specifics: announcements inside it, which may belong to other networks (customers, or a hijack).

Each announced route is also checked against the RPKI: whether a ROA authorises its origin AS.

The table is the view from APNIC’s route collector. Most of the global table is the same from everywhere, but a route that is filtered before it reaches that collector will not appear.

Frequently asked questions

Why is my /24 not listed but a /16 is?

Your addresses are announced as part of the larger block, and no one announces the /24 separately. That is the normal case for most customers of a provider.

What is a more-specific hijack?

Someone announces a longer prefix inside your space. Because routers prefer the most specific route, traffic goes to them. RPKI with a strict max length makes such announcements invalid.

Can I enter a single address?

Yes. The tool then shows the most specific announced route that contains it.

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