AS23793National Institute of Advanced Industrial Science and Technology
JapanRegistryAPNICAs of 24th October 2026, AS23793 (National Institute of Advanced…), a network registered in Japan with APNIC, originates 17 IPv4 prefixes covering 200k addresses. By IPv4 address space that makes it the 1,337th-largest of the 79,658 networks we see originating IPv4, and the 50th-largest of 728 in Japan. It is seen behind 1 upstream network, most often AS2907 (Science Information Network). None of its announcements have a valid RPKI ROA. 94% of its routes reach at least 90% of full-feed peers.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS23793 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS23793 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.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS2907Science Information Network | JP | Peer | 1,233 | 77 |
Prefixes
The largest blocks AS23793 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 150.18.0.0/16 | 65.5k | 77/77 |
| 150.29.0.0/16 | 65.5k | 77/77 |
| 150.82.0.0/16 | 65.5k | 77/77 |
| 192.31.198.0/24 | 256 | 77/77 |
| 192.31.199.0/24 | 256 | 77/77 |
| 192.31.200.0/24 | 256 | 77/77 |
| 192.31.201.0/24 | 256 | 77/77 |
| 192.31.202.0/24 | 256 | 77/77 |
| 192.31.203.0/24 | 256 | 77/77 |
| 192.31.204.0/24 | 256 | 77/77 |
Routing health
How AS23793'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
- Valid0.0%0
- Invalid0.0%0
- No ROA100.0%17
Propagation
- Globally propagated90% of full-feed peers or more94.1%16
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%5.9%1
Prefix sizes
IPv4 — 17 prefixes
Recent changes
Announcements that started or stopped since 24th Sept 2026.
No announcement by AS23793 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.