BGP Prefix Lookup
Enter a prefix (or a single address). Answered from our daily copy of the global routing table.
Examples:
173.215.0.0/17
One collector's view (APNIC). A route filtered before it reaches that collector is not listed.
Announced exactly
- 173.215.0.0/17AS5056Aureon Network ServicesRPKI Not found173.215.0.0
- Registry
- ARIN · United States · Dec 17, 2009
- Delegated block
- 173.215.0.0 – 173.215.127.255
Covering routes
0
No less-specific route covers it.
More-specific routes
49 more-specifics from 19 origin AS(es)
- 173.215.0.0/24AS63394Eastern Iowa IP, LLCRPKI Not found173.215.0.0
- 173.215.2.0/24AS397305FMCTCRPKI Not found173.215.2.0
- 173.215.3.0/24AS399559Alpine Communications L.C.RPKI Not found173.215.3.0
- 173.215.4.0/23AS46154Farmers Mutual Telephone CompanyRPKI Not found173.215.4.0
- 173.215.6.0/23AS46154Farmers Mutual Telephone CompanyRPKI Not found173.215.6.0
- 173.215.8.0/24AS397446Midwest Fiber Network, LLCRPKI Not found173.215.8.0
- 173.215.10.0/24AS20273WCCTARPKI Not found173.215.10.0
- 173.215.12.0/23AS13356Panora TelcoRPKI Not found173.215.12.0
- 173.215.17.0/24AS397982GRAND MOUND COOPERATIVE TELEPHONE ASSOCIATIONRPKI Not found173.215.17.0
- 173.215.19.0/24AS5056Aureon Network ServicesRPKI Not found173.215.19.0
- 173.215.30.0/24AS399559Alpine Communications L.C.RPKI Not found173.215.30.0
- 173.215.32.0/23AS5056Aureon Network ServicesRPKI Not found173.215.32.0
- 173.215.34.0/24AS396443Western Iowa NetworksRPKI Valid173.215.34.0
- 173.215.35.0/24AS5056Aureon Network ServicesRPKI Not found173.215.35.0
- 173.215.40.0/24AS20273WCCTARPKI Not found173.215.40.0
- 173.215.41.0/24AS54374WMTelRPKI Not found173.215.41.0
- 173.215.42.0/24AS20273WCCTARPKI Not found173.215.42.0
- 173.215.47.0/24AS5056Aureon Network ServicesRPKI Not found173.215.47.0
- 173.215.50.0/24AS396443Western Iowa NetworksRPKI Valid173.215.50.0
- 173.215.51.0/24AS396443Western Iowa NetworksRPKI Valid173.215.51.0
- 173.215.52.0/24AS5056Aureon Network ServicesRPKI Not found173.215.52.0
- 173.215.53.0/24AS396443Western Iowa NetworksRPKI Valid173.215.53.0
- 173.215.54.0/24AS397016Hawkeye Telephone CompanyRPKI Not found173.215.54.0
- 173.215.55.0/24AS18883FiberNet Communications L.C.RPKI Not found173.215.55.0
- 173.215.56.0/23AS18883FiberNet Communications L.C.RPKI Not found173.215.56.0
- 173.215.62.0/24AS5056Aureon Network ServicesRPKI Not found173.215.62.0
- 173.215.64.0/24AS46892Winnebago Cooperative Telecom AssociationRPKI Not found173.215.64.0
- 173.215.65.0/24AS5056Aureon Network ServicesRPKI Not found173.215.65.0
- 173.215.66.0/24AS11698WESTERN IOWA TELEPHONE ASSOCIATION (A COOPERATIVE)RPKI Not found173.215.66.0
- 173.215.70.0/23AS5056Aureon Network ServicesRPKI Not found173.215.70.0
- 173.215.72.0/24AS396443Western Iowa NetworksRPKI Valid173.215.72.0
- 173.215.73.0/24AS396443Western Iowa NetworksRPKI Valid173.215.73.0
- 173.215.74.0/24AS19628Mahaska Communication Group, LLCRPKI Not found173.215.74.0
- 173.215.75.0/24AS5056Aureon Network ServicesRPKI Not found173.215.75.0
- 173.215.76.0/24AS5056Aureon Network ServicesRPKI Not found173.215.76.0
- 173.215.79.0/24AS5056Aureon Network ServicesRPKI Not found173.215.79.0
- 173.215.83.0/24AS63033S.W.I.F.T. Services LLCRPKI Not found173.215.83.0
- 173.215.87.0/24AS62886OMNITEL COMMUNICATIONSRPKI Not found173.215.87.0
- 173.215.106.0/23AS5056Aureon Network ServicesRPKI Not found173.215.106.0
- 173.215.108.0/23AS5056Aureon Network ServicesRPKI Not found173.215.108.0
- 173.215.114.0/23AS17137Hawkeye Switching LLC.RPKI Not found173.215.114.0
- 173.215.117.0/24AS54374WMTelRPKI Not found173.215.117.0
- 173.215.119.0/24AS17137Hawkeye Switching LLC.RPKI Not found173.215.119.0
- 173.215.120.0/23AS17137Hawkeye Switching LLC.RPKI Not found173.215.120.0
- 173.215.122.0/24AS5056Aureon Network ServicesRPKI Not found173.215.122.0
- 173.215.123.0/24AS5056Aureon Network ServicesRPKI Not found173.215.123.0
- 173.215.124.0/24AS5056Aureon Network ServicesRPKI Not found173.215.124.0
- 173.215.125.0/24AS5056Aureon Network ServicesRPKI Not found173.215.125.0
- 173.215.126.0/24AS5056Aureon Network ServicesRPKI Not found173.215.126.0
On the internet, routes are announced as prefixes: an autonomous system tells its neighbours via BGP that it can deliver traffic for, say, 2.48.0.0/14. 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.