BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
207.212.0.0/14
Announced exactly
- 207.212.0.0/14AS7018AT&T Enterprises, LLCRPKI Not found207.212.0.0
- Registry
- ARIN · United States · Sep 25, 1996
- Delegated block
- 207.212.0.0 – 207.215.255.255
Covering routes
No less-specific route covers it.
More-specific routes
- 207.212.57.0/24AS20066Supermicro ComputerRPKI Not found207.212.57.0
- 207.212.58.0/24AS54968Data Pro of Sonoma and Vom.comRPKI Not found207.212.58.0
- 207.212.59.0/24AS54968Data Pro of Sonoma and Vom.comRPKI Not found207.212.59.0
- 207.212.60.0/24AS54968Data Pro of Sonoma and Vom.comRPKI Not found207.212.60.0
- 207.212.105.0/24AS395215San Joaquin CountyRPKI Not found207.212.105.0
- 207.213.82.0/24AS26852F&A Federal Credit UnionRPKI Not found207.213.82.0
- 207.213.112.0/22AS5033Key Information Systems, Inc.RPKI Not found207.213.112.0
- 207.213.142.0/23AS5033Key Information Systems, Inc.RPKI Not found207.213.142.0
- 207.214.127.0/24AS21646Fisher Investments Inc.RPKI Not found207.214.127.0
- 207.214.152.0/22AS26362Travis Credit UnionRPKI Not found207.214.152.0
- 207.214.156.0/23AS26362Travis Credit UnionRPKI Not found207.214.156.0
- 207.215.196.0/22AS22600San Francisco Superior CourtRPKI Not found207.215.196.0
- 207.215.212.0/24AS22600San Francisco Superior CourtRPKI Not found207.215.212.0
- 207.215.213.0/24AS22600San Francisco Superior CourtRPKI Not found207.215.213.0
- 207.215.216.0/24AS26362Travis Credit UnionRPKI Not found207.215.216.0
- 207.215.217.0/24AS26362Travis Credit UnionRPKI Not found207.215.217.0
- 207.215.228.0/23AS32337Nowcom CorporationRPKI Not found207.215.228.0
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.