BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
Examples:
148.240.0.0/16
One collector's view (APNIC). A route filtered before it reaches that collector is not listed.
Announced exactly
- 148.240.0.0/16AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.0.0
- Registry
- LACNIC · Mexico · Mar 14, 2000
- Delegated block
- 148.240.0.0 – 148.240.255.255
Covering routes
0
No less-specific route covers it.
More-specific routes
56 more-specifics from 1 origin AS(es)
- 148.240.0.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.0.0
- 148.240.7.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.7.0
- 148.240.8.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.8.0
- 148.240.13.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.13.0
- 148.240.14.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.14.0
- 148.240.16.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.16.0
- 148.240.19.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.19.0
- 148.240.20.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.20.0
- 148.240.25.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.25.0
- 148.240.27.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.27.0
- 148.240.28.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.28.0
- 148.240.32.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.32.0
- 148.240.38.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.38.0
- 148.240.40.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.40.0
- 148.240.42.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.42.0
- 148.240.45.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.45.0
- 148.240.47.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.47.0
- 148.240.48.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.48.0
- 148.240.54.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.54.0
- 148.240.56.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.56.0
- 148.240.59.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.59.0
- 148.240.63.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.63.0
- 148.240.68.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.68.0
- 148.240.72.0/21AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.72.0
- 148.240.80.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.80.0
- 148.240.82.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.82.0
- 148.240.84.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.84.0
- 148.240.92.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.92.0
- 148.240.96.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.96.0
- 148.240.106.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.106.0
- 148.240.108.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.108.0
- 148.240.112.0/20AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.112.0
- 148.240.115.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.115.0
- 148.240.119.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.119.0
- 148.240.128.0/20AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.128.0
- 148.240.152.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.152.0
- 148.240.156.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.156.0
- 148.240.160.0/21AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.160.0
- 148.240.172.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.172.0
- 148.240.176.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.176.0
- 148.240.180.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.180.0
- 148.240.184.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.184.0
- 148.240.186.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.186.0
- 148.240.187.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.187.0
- 148.240.191.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.191.0
- 148.240.194.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.194.0
- 148.240.196.0/22AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.196.0
- 148.240.204.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.204.0
- 148.240.210.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.210.0
- 148.240.216.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.216.0
- 148.240.218.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.218.0
- 148.240.220.0/23AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.220.0
- 148.240.224.0/21AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.224.0
- 148.240.233.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.233.0
- 148.240.238.0/24AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.238.0
- 148.240.240.0/20AS6503Axtel, S.A.B. de C.V.RPKI Valid148.240.240.0
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.