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AS4785xTom

JapanRegistryAPNIC

As of 26th September 2026, AS4785 (xTom), a network registered in Japan with APNIC, originates 46 IPv4 prefixes covering 11.8k addresses and 20 IPv6 prefixes. By IPv4 address space that makes it the 9,687th-largest of the 79,516 networks we see originating IPv4, and the 310th-largest of 729 in Japan. It is seen behind 4 upstream networks, most often AS17676 (SoftBank Corp.) and AS2497 (Internet Initiative Japan Inc.), and in front of 9 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

46

IPv6 prefixes

20

IPv4 addresses

11.8k

IPv6 /64s

61.5B

Upstream graph

The networks AS4785 is seen behind, one and two hops out, drawn from real AS paths.

AS4785Toward the internet core
Upstream graph for AS4785: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4785xTomThis networkAS2497Internet Initiati…AS6939Hurricane Electri…AS17676SoftBank Corp.AS35280F5 Networks SARLAS2914NTT America, Inc.AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS1299Arelion (fka. Tel…AS32590Valve Corporation

Networks observed one and two hops upstream of AS4785 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

29

adjacent networks

Upstreams
414%
Peers
1655%
Downstreams
931%

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

Upstreams of AS4785
NetworkCountryRelationshipPathsVantage pts
AS17676SoftBank Corp.JPPeer4,23181
AS2497Internet Initiative Japan Inc.JPPeer3,330140
AS6939Hurricane Electric LLCUSPeer1,73079
AS35280F5 Networks SARLFRPeer1134

Prefixes

All 66

The largest blocks AS4785 originates, widest first.

Largest prefixes originated by AS4785
PrefixAddressesVisibility
45.8.115.0/2425681/81
45.8.220.0/2425681/81
45.8.221.0/2425681/81
45.8.223.0/2425680/81
45.13.199.0/2425681/81
45.14.71.0/2425681/81
45.14.104.0/2425681/81
45.14.106.0/2425681/81
45.80.189.0/2425680/81
45.80.191.0/2425681/81

Routing health

How AS4785'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%66
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%66
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 46 prefixes

IPv6 — 20 prefixes

  • /2934.4B × /645.0%1
  • /324.3B × /6430.0%6
  • /36268M × /6425.0%5
  • /4865.5k × /6440.0%8

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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