subnet.im

AS131948FORNEXT Inc.

JapanRegistryAPNIC

As of 27th September 2026, AS131948 (FORNEXT Inc.), a network registered in Japan with APNIC, originates 1 IPv4 prefix covering 256 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 59,127th-largest of the 79,525 networks we see originating IPv4, and the 639th-largest of 729 in Japan. It is seen behind 14 upstream networks, most often AS35280 (F5 Networks SARL) and AS7713 (PT Telkom Indonesia Tbk), and in front of 4 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

1

IPv4 addresses

256

IPv6 /64s

65.5k

Upstream graph

The networks AS131948 is seen behind, one and two hops out, drawn from real AS paths.

AS131948Toward the internet core
Upstream graph for AS131948: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS131948FORNEXT Inc.This networkAS6939Hurricane Electri…AS7713PT Telkom Indones…AS24482SG.GSAS35280F5 Networks SARLAS199524Gcore S.A.AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS6453TATA Communicatio…AS38623Metfone (Viettel …AS32590Valve CorporationAS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS131948 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

56

adjacent networks

Upstreams
1425%
Peers
3868%
Downstreams
47%

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

Upstreams of AS131948
NetworkCountryRelationshipPathsVantage pts
AS35280F5 Networks SARLFRPeer616
AS7713PT Telkom Indonesia TbkIDPeer484
AS6939Hurricane Electric LLCUSPeer3523
AS24482SG.GSSGPeer302
AS199524Gcore S.A.LUPeer251
AS18106Viewqwest Pte LtdSGPeer104
AS24940Hetzner Online GmbHDEPeer92
AS9002RETN LimitedGBPeer52
AS4775Globe TelecomsPHPeer52
AS49544i3D.net B.VNLPeer44

Prefixes

The largest blocks AS131948 originates, widest first.

Largest prefixes originated by AS131948
PrefixAddressesVisibility
103.177.117.0/2425623/81
2001:df0:2440::/4865.5k × /6431/64

Routing health

How AS131948'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%2
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%50.0%1
  • Seen by few peersUnder 40%50.0%1

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS131948 started or stopped in this period.

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