BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
200.54.0.0/16
Announced exactly
- 200.54.0.0/16AS16629CTC. CORP S.A. (TELEFONICA EMPRESAS)RPKI Valid200.54.0.0
- Registry
- LACNIC · Chile · Nov 9, 1999
- Delegated block
- 200.54.0.0 – 200.54.255.255
Covering routes
No less-specific route covers it.
More-specific routes
- 200.54.96.0/24AS16629CTC. CORP S.A. (TELEFONICA EMPRESAS)RPKI Valid200.54.96.0
- 200.54.108.0/24AS52310Derco SPARPKI Valid200.54.108.0
- 200.54.114.0/24AS11340Red Universitaria NacionalRPKI Valid200.54.114.0
- 200.54.115.0/24AS52230Mapfre Compania de SegurosRPKI Valid200.54.115.0
- 200.54.120.0/24AS27880ATENTO CHILE S.A.RPKI Valid200.54.120.0
- 200.54.125.0/24AS52396TELEFONICA CHILE S.A. (MAYORISTAS)RPKI Valid200.54.125.0
- 200.54.128.0/20AS7418TELEFONICA CHILE S.A.RPKI Valid200.54.128.0
- 200.54.144.0/23AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.144.0
- 200.54.146.0/24AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.146.0
- 200.54.147.0/24AS7418TELEFONICA CHILE S.A.RPKI Valid200.54.147.0
- 200.54.153.0/24AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.153.0
- 200.54.154.0/23AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.154.0
- 200.54.156.0/22AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.156.0
- 200.54.160.0/20AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.160.0
- 200.54.176.0/22AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.176.0
- 200.54.181.0/24AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.181.0
- 200.54.182.0/23AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.182.0
- 200.54.184.0/22AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.184.0
- 200.54.188.0/24AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.188.0
- 200.54.193.0/24AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.193.0
- 200.54.194.0/24AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.194.0
- 200.54.196.0/23AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.196.0
- 200.54.199.0/24AS15311TELEFONICA EMPRESAS CHILE SARPKI Valid200.54.199.0
- 200.54.215.0/24AS16629CTC. CORP S.A. (TELEFONICA EMPRESAS)RPKI Valid200.54.215.0
On the internet, routes are announced as prefixes: an autonomous system tells its neighbours via BGP that it can deliver traffic for, say, 2.48.0.0/14. 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.