BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
94.76.128.0/18
Announced exactly
- 94.76.128.0/18AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALRPKI Valid94.76.128.0
- Registry
- RIPE NCC · Spain · Aug 1, 2008
- Delegated block
- 94.76.128.0 – 94.76.191.255
Covering routes
No less-specific route covers it.
More-specific routes
- 94.76.138.0/23AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALRPKI Valid94.76.138.0
- 94.76.139.0/24AS10753Level 3 Parent, LLCRPKI Valid94.76.139.0
- 94.76.144.0/20AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALRPKI Valid94.76.144.0
- 94.76.144.0/21AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALRPKI Valid94.76.144.0
- 94.76.146.0/24AS50563Onlycable Comunicaciones S.L.RPKI Valid94.76.146.0
- 94.76.154.0/24AS199952AVATEL TELECOM, SARPKI Valid94.76.154.0
- 94.76.155.0/24AS10753Level 3 Parent, LLCRPKI Valid94.76.155.0
- 94.76.158.0/24AS395793Arisk Communications inc.RPKI Valid94.76.158.0
- 94.76.160.0/21AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALRPKI Valid94.76.160.0
- 94.76.168.0/21AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALRPKI Valid94.76.168.0
- 94.76.170.0/24AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALRPKI Valid94.76.170.0
- 94.76.171.0/24AS50563Onlycable Comunicaciones S.L.RPKI Valid94.76.171.0
- 94.76.177.0/24AS10753Level 3 Parent, LLCRPKI Valid94.76.177.0
- 94.76.182.0/24AS47690TNGNET B.V.RPKI Valid94.76.182.0
- 94.76.184.0/21AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALRPKI Valid94.76.184.0
- 94.76.189.0/24AS10753Level 3 Parent, LLCRPKI Valid94.76.189.0
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.