BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
Examples:
149.100.0.0/16
One collector's view (APNIC). A route filtered before it reaches that collector is not listed.
Announced exactly
- 149.100.0.0/16AS174Cogent Communications, LLCRPKI Not found149.100.0.0
- Registry
- ARIN · United States · Jan 28, 1992
- Delegated block
- 149.100.0.0 – 149.100.255.255
Covering routes
0
No less-specific route covers it.
More-specific routes
54 more-specifics from 19 origin AS(es)
- 149.100.4.0/22AS39155JETNET WIMAX S.ARPKI Not found149.100.4.0
- 149.100.4.0/24AS39155JETNET WIMAX S.ARPKI Not found149.100.4.0
- 149.100.5.0/24AS39155JETNET WIMAX S.ARPKI Not found149.100.5.0
- 149.100.7.0/24AS39155JETNET WIMAX S.ARPKI Not found149.100.7.0
- 149.100.8.0/24AS174Cogent Communications, LLCRPKI Not found149.100.8.0
- 149.100.10.0/23AS43160TEMPLUS SPAIN SLRPKI Valid149.100.10.0
- 149.100.12.0/22AS39155JETNET WIMAX S.ARPKI Not found149.100.12.0
- 149.100.13.0/24AS39155JETNET WIMAX S.ARPKI Not found149.100.13.0
- 149.100.19.0/24AS43160TEMPLUS SPAIN SLRPKI Valid149.100.19.0
- 149.100.68.0/24AS174Cogent Communications, LLCRPKI Not found149.100.68.0
- 149.100.70.0/24AS199724TeknoDC Bilisim Teknolojileri A.S.RPKI Not found149.100.70.0
- 149.100.71.0/24AS149940PT Mulia Batam NetRPKI Valid149.100.71.0
- 149.100.74.0/24AS174Cogent Communications, LLCRPKI Not found149.100.74.0
- 149.100.75.0/24AS174Cogent Communications, LLCRPKI Not found149.100.75.0
- 149.100.95.0/24AS150654Kennies Star India Private LimitedRPKI Invalid149.100.95.0
- 149.100.96.0/19AS206347Wessex Internet LimitedRPKI Not found149.100.96.0
- 149.100.96.0/24AS206347Wessex Internet LimitedRPKI Not found149.100.96.0
- 149.100.128.0/23AS211349Maincare Solutions SASRPKI Not found149.100.128.0
- 149.100.133.0/24AS15695Expereo International BVRPKI Not found149.100.133.0
- 149.100.136.0/24AS212636S2B-NET SARLRPKI Not found149.100.136.0
- 149.100.138.0/24AS269879INTEGRACION DE TECNOLOGIAS MOVILES ITM C.A.RPKI Valid149.100.138.0
- 149.100.139.0/24AS174Cogent Communications, LLCRPKI Not found149.100.139.0
- 149.100.140.0/22AS400704NewConnect, LLCRPKI Not found149.100.140.0
- 149.100.144.0/22AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.144.0
- 149.100.144.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.144.0
- 149.100.145.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.145.0
- 149.100.146.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.146.0
- 149.100.147.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.147.0
- 149.100.148.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.148.0
- 149.100.149.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.149.0
- 149.100.150.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.150.0
- 149.100.151.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.151.0
- 149.100.152.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.152.0
- 149.100.153.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.153.0
- 149.100.154.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.154.0
- 149.100.155.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.155.0
- 149.100.156.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.156.0
- 149.100.157.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.157.0
- 149.100.158.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.158.0
- 149.100.159.0/24AS273039Tecnologia del Presente 18, C.ARPKI Valid149.100.159.0
- 149.100.160.0/24AS174Cogent Communications, LLCRPKI Not found149.100.160.0
- 149.100.161.0/24AS43364MEDIANET S.R.L.RPKI Not found149.100.161.0
- 149.100.162.0/23AS200794NAVIGO srlRPKI Not found149.100.162.0
- 149.100.164.0/24AS199536Angelastri Giuseppe trading as TechDigitalRPKI Not found149.100.164.0
- 149.100.165.0/24AS174Cogent Communications, LLCRPKI Not found149.100.165.0
- 149.100.166.0/23AS43364MEDIANET S.R.L.RPKI Not found149.100.166.0
- 149.100.166.0/24AS43364MEDIANET S.R.L.RPKI Not found149.100.166.0
- 149.100.167.0/24AS43364MEDIANET S.R.L.RPKI Not found149.100.167.0
- 149.100.172.0/22AS28941NOVA NETWORKS S.R.L.RPKI Not found149.100.172.0
- 149.100.176.0/22AS207606Myweb srlsRPKI Not found149.100.176.0
- 149.100.176.0/24AS207606Myweb srlsRPKI Not found149.100.176.0
- 149.100.177.0/24AS207606Myweb srlsRPKI Not found149.100.177.0
- 149.100.180.0/22AS57111NOVA NETWORKS S.R.L.RPKI Not found149.100.180.0
- 149.100.184.0/21AS174Cogent Communications, LLCRPKI Not found149.100.184.0
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.