AS11827Washington State University
United StatesRegistryARINAs of 11th November 2026, AS11827 (Washington State University), a network registered in the United States with ARIN, originates 15 IPv4 prefixes covering 66.6k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 3,428th-largest of the 80,747 networks we see originating IPv4, and the 1,165th-largest of 18,752 in the United States. It is seen behind 2 upstream networks, most often AS394345 (Washington State University) and AS10430 (Washington State K-20…), and in front of 1 downstream 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 AS11827 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS11827 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
6
adjacent networks
- Upstreams
- 233%
- Peers
- 350%
- Downstreams
- 117%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS394345Washington State University | US | Peer | 1,024 | 75 |
| AS10430Washington State K-20 Telecommunications Network | US | Peer | 202 | 101 |
Prefixes
The largest blocks AS11827 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 134.121.64.0/18 | 16.4k | 75/76 |
| 134.121.192.0/18 | 16.4k | 75/76 |
| 134.121.32.0/19 | 8.2k | 75/76 |
| 134.121.128.0/19 | 8.2k | 75/76 |
| 134.121.16.0/20 | 4.1k | 75/76 |
| 134.121.160.0/20 | 4.1k | 75/76 |
| 69.166.48.0/21 | 2k | 75/76 |
| 134.121.0.0/21 | 2k | 75/76 |
| 134.121.176.0/21 | 2k | 75/76 |
| 69.166.44.0/22 | 1k | 75/76 |
Routing health
How AS11827'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%16
Propagation
- Globally propagated90% of full-feed peers or more93.8%15
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%6.3%1
Prefix sizes
IPv4 — 15 prefixes
IPv6 — 1 prefixes
- /4016.8M × /64100.0%1
Recent changes
Announcements that started or stopped since 12th Oct 2026.
No announcement by AS11827 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.