subnet.im

AS45674BIGLOBE Inc.

JapanRegistryAPNIC

As of 11th November 2026, AS45674 (BIGLOBE 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 59,982nd-largest of the 80,747 networks we see originating IPv4, and the 647th-largest of 737 in Japan. It is seen behind 1 upstream network, most often AS2518 (BIGLOBE Inc.). 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

1

IPv6 prefixes

1

IPv4 addresses

256

IPv6 /64s

65.5k

Upstream graph

The networks AS45674 is seen behind, one and two hops out, drawn from real AS paths.

AS45674Toward the internet core
Upstream graph for AS45674: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS45674BIGLOBE Inc.This networkAS2518BIGLOBE Inc.AS174Cogent Communicat…AS2516KDDI Corporation

Networks observed one and two hops upstream of AS45674 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS45674
NetworkCountryRelationshipPathsVantage pts
AS2518BIGLOBE Inc.JPPeer139139

Prefixes

The largest blocks AS45674 originates, widest first.

Largest prefixes originated by AS45674
PrefixAddressesVisibility
192.47.117.0/2425676/76
2001:260:321::/4865.5k × /6463/63

Routing health

How AS45674'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 more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS45674 started or stopped in this period.

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