BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
59.44.0.0/14
Announced exactly
- 59.44.0.0/14AS4134No.31,Jin-rong StreetRPKI Not found59.44.0.0
- Registry
- APNIC · China · Aug 17, 2004
- Delegated block
- 59.44.0.0 – 59.47.255.255
Covering routes
No less-specific route covers it.
More-specific routes
- 59.44.64.0/19AS134762CHINANET Liaoning province Dalian MAN networkRPKI Valid59.44.64.0
- 59.44.96.0/19AS134762CHINANET Liaoning province Dalian MAN networkRPKI Valid59.44.96.0
- 59.45.64.0/19AS137688CHINATELECOM Liaoning Benxi MANRPKI Valid59.45.64.0
- 59.46.34.0/24AS141025Shenyang MAN, Liaoning, China TelecomRPKI Valid59.46.34.0
- 59.46.128.0/18AS134762CHINANET Liaoning province Dalian MAN networkRPKI Valid59.46.128.0
- 59.46.192.0/18AS134762CHINANET Liaoning province Dalian MAN networkRPKI Valid59.46.192.0
- 59.47.0.0/20AS137688CHINATELECOM Liaoning Benxi MANRPKI Valid59.47.0.0
- 59.47.56.0/24AS4809China Telecom Next Generation Carrier NetworkRPKI Valid59.47.56.0
- 59.47.57.0/24AS4809China Telecom Next Generation Carrier NetworkRPKI Valid59.47.57.0
- 59.47.192.0/19AS137688CHINATELECOM Liaoning Benxi MANRPKI Valid59.47.192.0
- 59.47.224.0/20AS137688CHINATELECOM Liaoning Benxi MANRPKI Valid59.47.224.0
- 59.47.246.0/24AS58777ChinaTelecom Cybersecurity TechRPKI Valid59.47.246.0
On the internet, routes are announced as prefixes: an autonomous system tells its neighbours via BGP that it can deliver traffic for, say, 49.224.0.0/14. 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.