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AS10010TOKAI Communications Corporation

JapanRegistryAPNICTypeEyeball

As of 11th November 2026, AS10010 (TOKAI Communications Corporation), an access network registered in Japan with APNIC, originates 188 IPv4 prefixes covering 1.6M addresses and 7 IPv6 prefixes. By IPv4 address space that makes it the 334th-largest of the 80,743 networks we see originating IPv4, and the 18th-largest of 737 in Japan. It is seen behind 16 upstream networks, most often AS4637 (Telstra International Limited) and AS174 (Cogent Communications, LLC), and in front of 38 downstream networks. 80% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

188

IPv6 prefixes

7

IPv4 addresses

1.6M

IPv6 /64s

45.1B

Upstream graph

The networks AS10010 is seen behind, one and two hops out, drawn from real AS paths.

AS10010Toward the internet core
Upstream graph for AS10010: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS10010TOKAI Communicati…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2497Internet Initiati…AS4637Telstra Internati…AS17676SoftBank Corp.AS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS2914NTT America, Inc.AS32590Valve Corporation

Networks observed one and two hops upstream of AS10010 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

133

adjacent networks

Upstreams
1612%
Peers
7959%
Downstreams
3829%

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

Upstreams of AS10010
NetworkCountryRelationshipPathsVantage pts
AS4637Telstra International LimitedHKPeer5,74886
AS174Cogent Communications, LLCUSPeer3,48244
AS2497Internet Initiative Japan Inc.JPPeer3,47765
AS1299Arelion (fka. Telia Carrier)SEPeer2,51845
AS17676SoftBank Corp.JPPeer2,26645
AS2518BIGLOBE Inc.JPPeer2,07738
AS6939Hurricane Electric LLCUSPeer5725
AS18106Viewqwest Pte LtdSGPeer5324
AS9002RETN LimitedGBPeer2642
AS4775Globe TelecomsPHAdjacent2602

Prefixes

All 195

The largest blocks AS10010 originates, widest first.

Largest prefixes originated by AS10010
PrefixAddressesVisibility
42.124.0.0/1665.5k76/76
42.126.0.0/1665.5k76/76
59.84.0.0/1665.5k76/76
59.85.0.0/1665.5k76/76
150.38.0.0/1665.5k76/76
164.162.0.0/1665.5k76/76
182.20.0.0/1665.5k76/76
220.148.0.0/1665.5k76/76
27.98.0.0/1732.8k76/76
42.125.0.0/1732.8k76/76

Routing health

How AS10010'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

  • Valid80.0%156
  • Invalid0.5%1
  • No ROA19.5%38

Propagation

  • Globally propagated90% of full-feed peers or more98.5%192
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.5%3

Prefix sizes

IPv4 — 188 prefixes

IPv6 — 7 prefixes

  • /3017.2B × /6428.6%2
  • /324.3B × /6428.6%2
  • /332.1B × /6414.3%1
  • /4865.5k × /6428.6%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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