BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
110.164.0.0/16
Announced exactly
- 110.164.0.0/16AS45758Triple T Broadband Public Company LimitedRPKI Valid110.164.0.0
- Registry
- APNIC · Thailand · Apr 23, 2009
- Delegated block
- 110.164.0.0 – 110.164.255.255
Covering routes
No less-specific route covers it.
More-specific routes
- 110.164.61.0/24AS37992Thammasat University in thailandRPKI Valid110.164.61.0
- 110.164.62.0/24AS37992Thammasat University in thailandRPKI Valid110.164.62.0
- 110.164.83.0/24AS37992Thammasat University in thailandRPKI Valid110.164.83.0
- 110.164.84.0/24AS37992Thammasat University in thailandRPKI Valid110.164.84.0
- 110.164.137.0/24AS132493Lampang-Meatha Rd., Thambon Chomphu Ampher Maung Lampang 52100RPKI Valid110.164.137.0
- 110.164.143.0/24AS135676National Institute for Emergency MedicineRPKI Valid110.164.143.0
- 110.164.146.0/24AS152734Maxnito Company LimitedRPKI Valid110.164.146.0
- 110.164.167.0/24AS55451Office of the National Broadcasting andRPKI Valid110.164.167.0
- 110.164.178.0/24AS37992Thammasat University in thailandRPKI Valid110.164.178.0
- 110.164.179.0/24AS37992Thammasat University in thailandRPKI Valid110.164.179.0
- 110.164.203.0/24AS152734Maxnito Company LimitedRPKI Valid110.164.203.0
- 110.164.234.0/24AS147027Royal Thai Armed Force HeadquartersRPKI Valid110.164.234.0
- 110.164.235.0/24AS147027Royal Thai Armed Force HeadquartersRPKI Valid110.164.235.0
- 110.164.248.0/24AS24344Chiangmai Rajabhat UniversityRPKI Valid110.164.248.0
- 110.164.249.0/24AS24344Chiangmai Rajabhat UniversityRPKI Valid110.164.249.0
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.