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BGP Prefix Lookup

Enter a prefix (or a single address). Answered from our daily copy of the global routing table.

Examples:

114.130.128.0/18

One collector's view (APNIC). A route filtered before it reaches that collector is not listed.

Announced exactly

Registry
APNIC · Bangladesh · May 26, 2008
Delegated block
114.130.128.0 – 114.130.191.255

Covering routes

0

No less-specific route covers it.

More-specific routes

49 more-specifics from 1 origin AS(es)
  • 114.130.128.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.128.0
  • 114.130.129.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.129.0
  • 114.130.130.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.130.0
  • 114.130.131.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.131.0
  • 114.130.132.0/22AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.132.0
  • 114.130.136.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.136.0
  • 114.130.137.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.137.0
  • 114.130.138.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.138.0
  • 114.130.139.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.139.0
  • 114.130.140.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.140.0
  • 114.130.141.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.141.0
  • 114.130.142.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.142.0
  • 114.130.143.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.143.0
  • 114.130.144.0/22AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.144.0
  • 114.130.148.0/22AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.148.0
  • 114.130.152.0/22AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.152.0
  • 114.130.152.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.152.0
  • 114.130.155.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.155.0
  • 114.130.156.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.156.0
  • 114.130.157.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.157.0
  • 114.130.158.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.158.0
  • 114.130.159.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.159.0
  • 114.130.160.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.160.0
  • 114.130.161.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.161.0
  • 114.130.162.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.162.0
  • 114.130.164.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.164.0
  • 114.130.165.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.165.0
  • 114.130.166.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.166.0
  • 114.130.168.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.168.0
  • 114.130.169.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.169.0
  • 114.130.171.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.171.0
  • 114.130.172.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.172.0
  • 114.130.173.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.173.0
  • 114.130.174.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.174.0
  • 114.130.175.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.175.0
  • 114.130.176.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.176.0
  • 114.130.177.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.177.0
  • 114.130.180.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.180.0
  • 114.130.181.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.181.0
  • 114.130.182.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.182.0
  • 114.130.183.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.183.0
  • 114.130.184.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.184.0
  • 114.130.185.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.185.0
  • 114.130.186.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.186.0
  • 114.130.187.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.187.0
  • 114.130.188.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.188.0
  • 114.130.189.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.189.0
  • 114.130.190.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.190.0
  • 114.130.191.0/24AS45588Bangladesh Telecommunications Company Limited (BTCL), Nationwide PSTN Operator and Data and Internet Service Provider.RPKI Valid114.130.191.0

On the internet, routes are announced as prefixes: an autonomous system tells its neighbours via BGP that it can deliver traffic for, say, 85.240.0.0/13. 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.

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