BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
45.57.0.0/17
Announced exactly
- 45.57.0.0/17AS2906Netflix Streaming Services Inc.RPKI Valid45.57.0.0
- Registry
- ARIN · United States · Jan 9, 2015
- Delegated block
- 45.57.0.0 – 45.57.127.255
Covering routes
No less-specific route covers it.
More-specific routes
- 45.57.8.0/23AS40027Netflix Streaming Services Inc.RPKI Valid45.57.8.0
- 45.57.8.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.8.0
- 45.57.9.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.9.0
- 45.57.10.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.10.0
- 45.57.11.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.11.0
- 45.57.16.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.16.0
- 45.57.17.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.17.0
- 45.57.20.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.20.0
- 45.57.21.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.21.0
- 45.57.28.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.28.0
- 45.57.29.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.29.0
- 45.57.36.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.36.0
- 45.57.40.0/23AS40027Netflix Streaming Services Inc.RPKI Valid45.57.40.0
- 45.57.40.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.40.0
- 45.57.41.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.41.0
- 45.57.44.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.44.0
- 45.57.45.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.45.0
- 45.57.54.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.54.0
- 45.57.55.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.55.0
- 45.57.58.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.58.0
- 45.57.59.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.59.0
- 45.57.62.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.62.0
- 45.57.63.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.63.0
- 45.57.68.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.68.0
- 45.57.69.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.69.0
- 45.57.74.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.74.0
- 45.57.75.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.75.0
- 45.57.82.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.82.0
- 45.57.83.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.83.0
- 45.57.86.0/23AS40027Netflix Streaming Services Inc.RPKI Valid45.57.86.0
- 45.57.86.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.86.0
- 45.57.87.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.87.0
- 45.57.88.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.88.0
- 45.57.89.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.89.0
- 45.57.90.0/23AS40027Netflix Streaming Services Inc.RPKI Valid45.57.90.0
- 45.57.90.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.90.0
- 45.57.91.0/24AS40027Netflix Streaming Services Inc.RPKI Valid45.57.91.0
- 45.57.100.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.100.0
- 45.57.101.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.101.0
- 45.57.102.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.102.0
- 45.57.103.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.103.0
- 45.57.120.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.120.0
- 45.57.121.0/24AS2906Netflix Streaming Services Inc.RPKI Valid45.57.121.0
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.