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AS10010TOKAI Communications Corporation

JapanRegistryAPNICTypeEyeball

As of 27th September 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 329th-largest of the 79,525 networks we see originating IPv4, and the 17th-largest of 729 in Japan. It is seen behind 18 upstream networks, most often AS4637 (Telstra International Limited) and AS174 (Cogent Communications, LLC), and in front of 37 downstream networks. 80% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. Over 99% 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: 12 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…AS2518BIGLOBE Inc.AS4637Telstra Internati…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS2914NTT America, Inc.AS2516KDDI CorporationAS16552Tiggee LLCAS32590Valve 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

135

adjacent networks

Upstreams
1813%
Peers
8059%
Downstreams
3727%

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

Upstreams of AS10010
NetworkCountryRelationshipPathsVantage pts
AS4637Telstra International LimitedHKPeer5,65992
AS174Cogent Communications, LLCUSPeer4,48055
AS2497Internet Initiative Japan Inc.JPPeer3,94366
AS1299Arelion (fka. Telia Carrier)SEPeer2,56445
AS2518BIGLOBE Inc.JPPeer2,20740
AS17676SoftBank Corp.JPPeer1,72347
AS6939Hurricane Electric LLCUSPeer5775
AS18106Viewqwest Pte LtdSGPeer5173
AS9002RETN LimitedGBPeer2662
AS4775Globe TelecomsPHPeer2622

Prefixes

All 195

The largest blocks AS10010 originates, widest first.

Largest prefixes originated by AS10010
PrefixAddressesVisibility
42.124.0.0/1665.5k81/81
42.126.0.0/1665.5k80/81
59.84.0.0/1665.5k80/81
59.85.0.0/1665.5k81/81
150.38.0.0/1665.5k80/81
164.162.0.0/1665.5k81/81
182.20.0.0/1665.5k80/81
220.148.0.0/1665.5k81/81
27.98.0.0/1732.8k80/81
42.125.0.0/1732.8k80/81

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 more99.5%194
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.5%1

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 28th Aug 2026.

No announcement by AS10010 started or stopped in this period.

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