SUBNET.IM

AS173Nippon Telegraph and Telephone Corporation

JapanRegistryAPNIC

At a glance

IPv4 prefixes

2

IPv6 prefixes

0

IPv4 addresses

8.7k

IPv6 /64s

0

Upstream graph

The networks AS173 is seen behind, one and two hops out, drawn from real AS paths.

AS173Toward the internet core
Upstream graph for AS173: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS173Nippon Telegraph …This networkAS2518BIGLOBE Inc.AS4775Globe TelecomsAS6939Hurricane Electri…AS7521INTERNET MULTIFEE…AS9002RETN LimitedAS174Cogent Communicat…AS2516KDDI CorporationAS3491PCCW Global (HK) …AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS55391INTERNET MULTIFEE…AS51907Kanton Zug

Networks observed one and two hops upstream of AS173 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

20

adjacent networks

Upstreams
630%
Peers
1365%
Downstreams
15%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS173
NetworkCountryRelationshipPathsVantage pts
AS2518BIGLOBE Inc.JPPeer48369
AS7521INTERNET MULTIFEED CO.JPPeer355
AS6939Hurricane Electric LLCUSPeer213
AS4775Globe TelecomsPHPeer71
AS9002RETN LimitedGBPeer71
AS49544i3D.net B.VNLPeer71

Prefixes

The largest blocks AS173 originates, widest first.

Largest prefixes originated by AS173
PrefixAddressesVisibility
163.138.160.0/198.2k80/80
192.47.168.0/2351280/80

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.