BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
200.27.0.0/16
Announced exactly
- 200.27.0.0/16AS6429Telmex Chile Internet S.A.RPKI Valid200.27.0.0
- Registry
- LACNIC · Chile · Apr 19, 2001
- Delegated block
- 200.27.0.0 – 200.27.255.255
Covering routes
No less-specific route covers it.
More-specific routes
- 200.27.0.0/19AS6429Telmex Chile Internet S.A.RPKI Valid200.27.0.0
- 200.27.0.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.0.0
- 200.27.11.0/24AS19244Telmex USARPKI Valid200.27.11.0
- 200.27.22.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.22.0
- 200.27.24.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.24.0
- 200.27.28.0/22AS6429Telmex Chile Internet S.A.RPKI Valid200.27.28.0
- 200.27.31.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.31.0
- 200.27.32.0/19AS6429Telmex Chile Internet S.A.RPKI Valid200.27.32.0
- 200.27.32.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.32.0
- 200.27.32.0/21AS6429Telmex Chile Internet S.A.RPKI Valid200.27.32.0
- 200.27.44.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.44.0
- 200.27.48.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.48.0
- 200.27.58.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.58.0
- 200.27.64.0/19AS6429Telmex Chile Internet S.A.RPKI Valid200.27.64.0
- 200.27.72.0/24AS264724Universidad Nacional Andres BelloRPKI Valid200.27.72.0
- 200.27.73.0/24AS264724Universidad Nacional Andres BelloRPKI Valid200.27.73.0
- 200.27.78.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.78.0
- 200.27.82.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.82.0
- 200.27.90.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.90.0
- 200.27.96.0/19AS6429Telmex Chile Internet S.A.RPKI Valid200.27.96.0
- 200.27.96.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.96.0
- 200.27.97.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.97.0
- 200.27.99.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.99.0
- 200.27.112.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.112.0
- 200.27.115.0/24AS27678NIC ChileRPKI Valid200.27.115.0
- 200.27.128.0/19AS6429Telmex Chile Internet S.A.RPKI Valid200.27.128.0
- 200.27.128.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.128.0
- 200.27.128.0/24AS6535Telmex Servicios Empresariales S.A.RPKI Valid200.27.128.0
- 200.27.136.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.136.0
- 200.27.144.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.144.0
- 200.27.152.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.152.0
- 200.27.156.0/24AS25718Turismo Cocha S.ARPKI Valid200.27.156.0
- 200.27.157.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.157.0
- 200.27.160.0/19AS6429Telmex Chile Internet S.A.RPKI Valid200.27.160.0
- 200.27.161.0/24AS264636CUANTA CHILE SARPKI Valid200.27.161.0
- 200.27.166.0/24AS27735TIVIT CHILE TERCERIZACION DE PROCESOS, SERVICIOS Y TECNOLOGIA SpARPKI Valid200.27.166.0
- 200.27.190.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.190.0
- 200.27.191.0/24AS273178Redbanc SARPKI Valid200.27.191.0
- 200.27.192.0/19AS6429Telmex Chile Internet S.A.RPKI Valid200.27.192.0
- 200.27.192.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.192.0
- 200.27.196.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.196.0
- 200.27.199.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.199.0
- 200.27.208.0/20AS6429Telmex Chile Internet S.A.RPKI Valid200.27.208.0
- 200.27.212.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.212.0
- 200.27.213.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.213.0
- 200.27.224.0/19AS6429Telmex Chile Internet S.A.RPKI Valid200.27.224.0
- 200.27.228.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.228.0
- 200.27.252.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.252.0
- 200.27.253.0/24AS6429Telmex Chile Internet S.A.RPKI Valid200.27.253.0
On the internet, routes are announced as prefixes: an autonomous system tells its neighbours via BGP that it can deliver traffic for, say, 144.122.0.0/16 (Middle East Technical University, AS1967). 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.