BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
Examples:
78.38.0.0/16
One collector's view (APNIC). A route filtered before it reaches that collector is not listed.
Announced exactly
- 78.38.0.0/16AS49666Telecommunication Infrastructure CompanyRPKI Valid78.38.0.0
- Registry
- RIPE NCC · Iran · Mar 19, 2007
- Delegated block
- 78.38.0.0 – 78.39.255.255
Covering routes
0
No less-specific route covers it.
More-specific routes
59 more-specifics from 4 origin AS(es)
- 78.38.0.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.0.0
- 78.38.16.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.16.0
- 78.38.24.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.24.0
- 78.38.26.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.26.0
- 78.38.28.0/22AS58224Iran Telecommunication Company PJSRPKI Valid78.38.28.0
- 78.38.32.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.32.0
- 78.38.40.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.40.0
- 78.38.42.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.42.0
- 78.38.44.0/22AS58224Iran Telecommunication Company PJSRPKI Valid78.38.44.0
- 78.38.48.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.48.0
- 78.38.50.0/24AS58224Iran Telecommunication Company PJSRPKI Valid78.38.50.0
- 78.38.51.0/24AS58224Iran Telecommunication Company PJSRPKI Valid78.38.51.0
- 78.38.52.0/24AS58224Iran Telecommunication Company PJSRPKI Valid78.38.52.0
- 78.38.53.0/24AS58224Iran Telecommunication Company PJSRPKI Valid78.38.53.0
- 78.38.54.0/24AS58224Iran Telecommunication Company PJSRPKI Valid78.38.54.0
- 78.38.55.0/24AS58224Iran Telecommunication Company PJSRPKI Valid78.38.55.0
- 78.38.56.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.56.0
- 78.38.64.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.64.0
- 78.38.72.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.72.0
- 78.38.80.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.80.0
- 78.38.88.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.88.0
- 78.38.96.0/22AS58224Iran Telecommunication Company PJSRPKI Valid78.38.96.0
- 78.38.100.0/22AS58224Iran Telecommunication Company PJSRPKI Valid78.38.100.0
- 78.38.104.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.104.0
- 78.38.106.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.106.0
- 78.38.108.0/22AS58224Iran Telecommunication Company PJSRPKI Valid78.38.108.0
- 78.38.112.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.112.0
- 78.38.120.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.120.0
- 78.38.128.0/20AS58224Iran Telecommunication Company PJSRPKI Valid78.38.128.0
- 78.38.144.0/22AS58224Iran Telecommunication Company PJSRPKI Valid78.38.144.0
- 78.38.148.0/22AS58224Iran Telecommunication Company PJSRPKI Valid78.38.148.0
- 78.38.152.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.152.0
- 78.38.160.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.160.0
- 78.38.168.0/21AS58224Iran Telecommunication Company PJSRPKI Valid78.38.168.0
- 78.38.176.0/20AS58224Iran Telecommunication Company PJSRPKI Valid78.38.176.0
- 78.38.192.0/19AS58224Iran Telecommunication Company PJSRPKI Valid78.38.192.0
- 78.38.219.0/24AS58224Iran Telecommunication Company PJSRPKI Valid78.38.219.0
- 78.38.224.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.224.0
- 78.38.226.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.226.0
- 78.38.228.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.228.0
- 78.38.230.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.230.0
- 78.38.232.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.232.0
- 78.38.234.0/23AS58224Iran Telecommunication Company PJSRPKI Valid78.38.234.0
- 78.38.236.0/24AS58224Iran Telecommunication Company PJSRPKI Valid78.38.236.0
- 78.38.237.0/24AS60148Iran Information Technology Company PJSCRPKI Valid78.38.237.0
- 78.38.239.0/24AS60148Iran Information Technology Company PJSCRPKI Valid78.38.239.0
- 78.38.240.0/24AS12880Iran Information Technology Company PJSCRPKI Valid78.38.240.0
- 78.38.241.0/24AS12880Iran Information Technology Company PJSCRPKI Valid78.38.241.0
- 78.38.242.0/24AS12880Iran Information Technology Company PJSCRPKI Valid78.38.242.0
- 78.38.243.0/24AS42337Respina Networks & Beyond PJSCRPKI Valid78.38.243.0
- 78.38.244.0/24AS12880Iran Information Technology Company PJSCRPKI Valid78.38.244.0
- 78.38.245.0/24AS12880Iran Information Technology Company PJSCRPKI Valid78.38.245.0
- 78.38.246.0/24AS42337Respina Networks & Beyond PJSCRPKI Valid78.38.246.0
- 78.38.247.0/24AS12880Iran Information Technology Company PJSCRPKI Valid78.38.247.0
- 78.38.248.0/24AS42337Respina Networks & Beyond PJSCRPKI Valid78.38.248.0
- 78.38.250.0/24AS42337Respina Networks & Beyond PJSCRPKI Valid78.38.250.0
- 78.38.251.0/24AS42337Respina Networks & Beyond PJSCRPKI Valid78.38.251.0
- 78.38.254.0/24AS42337Respina Networks & Beyond PJSCRPKI Valid78.38.254.0
- 78.38.255.0/24AS12880Iran Information Technology Company PJSCRPKI Valid78.38.255.0
On the internet, routes are announced as prefixes: an autonomous system tells its neighbours via BGP that it can deliver traffic for, say, 193.166.0.0/15. 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.