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AS2907Science Information Network

JapanRegistryAPNICTypeEyeball

As of 27th September 2026, AS2907 (Science Information Network), an access network registered in Japan with APNIC, originates 614 IPv4 prefixes covering 9M addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 76th-largest of the 79,525 networks we see originating IPv4, and the 5th-largest of 729 in Japan. It is seen behind 20 upstream networks, most often AS2497 (Internet Initiative Japan Inc.) and AS6939 (Hurricane Electric LLC), and in front of 96 downstream networks. 7% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

614

IPv6 prefixes

2

IPv4 addresses

9M

IPv6 /64s

8.6B

Upstream graph

The networks AS2907 is seen behind, one and two hops out, drawn from real AS paths.

AS2907Toward the internet core
Upstream graph for AS2907: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS2907Science Informati…This networkAS2497Internet Initiati…AS6939Hurricane Electri…AS8966Etisalat (E&)AS9002RETN LimitedAS18106Viewqwest Pte LtdAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS20130Depaul UniversityAS35280F5 Networks SARLAS132337AxclusiveAS51907Kanton ZugAS215859Hetzner Cloud - S…

Networks observed one and two hops upstream of AS2907 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

276

adjacent networks

Upstreams
207%
Peers
16058%
Downstreams
9635%

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

Upstreams of AS2907
NetworkCountryRelationshipPathsVantage pts
AS2497Internet Initiative Japan Inc.JPPeer66,269129
AS6939Hurricane Electric LLCUSPeer4,90520
AS18106Viewqwest Pte LtdSGPeer2,1924
AS8966Etisalat (E&)AEPeer1,9693
AS9002RETN LimitedGBPeer1,1142
AS35280F5 Networks SARLFRPeer1,1062
AS4775Globe TelecomsPHPeer1,0952
AS49544i3D.net B.VNLPeer1,0872
AS24482SG.GSSGPeer1,0763
AS2153CENICUSPeer1,0591

Prefixes

All 616

The largest blocks AS2907 originates, widest first.

Largest prefixes originated by AS2907
PrefixAddressesVisibility
130.34.0.0/1665.5k80/81
130.153.0.0/1665.5k80/81
131.206.0.0/1665.5k80/81
133.7.0.0/1665.5k81/81
133.8.0.0/1665.5k80/81
133.10.0.0/1665.5k80/81
133.12.0.0/1665.5k80/81
133.14.0.0/1665.5k80/81
133.15.0.0/1665.5k80/81
133.16.0.0/1665.5k80/81

Routing health

How AS2907'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

  • Valid6.7%41
  • Invalid0.0%0
  • No ROA93.3%575

Propagation

  • Globally propagated90% of full-feed peers or more98.5%607
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.5%9

Prefix sizes

IPv4 — 614 prefixes

IPv6 — 2 prefixes

  • /324.3B × /64100.0%2

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.