subnet.im

AS9607BroadBand Tower, Inc.

JapanRegistryAPNIC

As of 26th September 2026, AS9607 (BroadBand Tower, Inc.), a network registered in Japan with APNIC, originates 20 IPv4 prefixes covering 31.7k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 5,553rd-largest of the 79,516 networks we see originating IPv4, and the 217th-largest of 729 in Japan. It is seen behind 10 upstream networks, most often AS8220 (COLT) and AS4637 (Telstra International Limited), and in front of 16 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

20

IPv6 prefixes

5

IPv4 addresses

31.7k

IPv6 /64s

8.7B

Upstream graph

The networks AS9607 is seen behind, one and two hops out, drawn from real AS paths.

AS9607Toward the internet core
Upstream graph for AS9607: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS9607BroadBand Tower, …This networkAS2497Internet Initiati…AS4637Telstra Internati…AS6939Hurricane Electri…AS8220COLTAS35280F5 Networks SARLAS2914NTT America, Inc.AS16552Tiggee LLCAS1299Arelion (fka. Tel…AS20130Depaul UniversityAS32590Valve CorporationAS3356Lumen (Level 3)AS15576NTS workspace AG

Networks observed one and two hops upstream of AS9607 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

66

adjacent networks

Upstreams
1015%
Peers
4061%
Downstreams
1624%

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

Upstreams of AS9607
NetworkCountryRelationshipPathsVantage pts
AS8220COLTGBPeer5,29685
AS4637Telstra International LimitedHKPeer1,67553
AS2497Internet Initiative Japan Inc.JPPeer1,07838
AS6939Hurricane Electric LLCUSPeer11016
AS35280F5 Networks SARLFRPeer642
AS8966Etisalat (E&)AEPeer402
AS49544i3D.net B.VNLPeer282
AS4775Globe TelecomsPHPeer252
AS7671NTT SmartConnect CorporationJPPeer221
AS23764China Telecom GlobalHKPeer11

Prefixes

The largest blocks AS9607 originates, widest first.

Largest prefixes originated by AS9607
PrefixAddressesVisibility
203.216.192.0/198.2k81/81
124.147.0.0/204.1k81/81
124.147.16.0/212k81/81
202.183.80.0/212k81/81
203.141.56.0/212k81/81
208.111.48.0/212k81/81
211.14.0.0/212k81/81
103.96.112.0/221k81/81
124.147.24.0/221k81/81
124.147.28.0/221k81/81

Routing health

How AS9607's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid100.0%25
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%25
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 20 prefixes

IPv6 — 5 prefixes

  • /324.3B × /6440.0%2
  • /3867.1M × /6420.0%1
  • /4016.8M × /6420.0%1
  • /4865.5k × /6420.0%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

No announcement by AS9607 started or stopped in this period.

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