subnet.im

AS297National Aeronautics and Space Administration

United StatesRegistryARINTypeEyeball

As of 22nd October 2026, AS297 (National Aeronautics and Space…), an access network registered in the United States with ARIN, originates 28 IPv4 prefixes covering 664k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 594th-largest of the 79,663 networks we see originating IPv4, and the 143rd-largest of 18,476 in the United States. It is seen behind 7 upstream networks, most often AS209 (Lumen (ex. Qwest)) and AS2914 (NTT America, Inc.), and in front of 5 downstream networks. 14% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 97% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

28

IPv6 prefixes

1

IPv4 addresses

664k

IPv6 /64s

4.3B

Upstream graph

The networks AS297 is seen behind, one and two hops out, drawn from real AS paths.

AS297Toward the internet core
Upstream graph for AS297: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS297National Aeronaut…This networkAS209Lumen (ex. Qwest)AS2497Internet Initiati…AS2914NTT America, Inc.AS6762Telecom Italia Sp…AS6939Hurricane Electri…AS3356Lumen (Level 3)AS1299Arelion (fka. Tel…AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS52075Wifirst S.A.S.AS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS297 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

28

adjacent networks

Upstreams
725%
Peers
1657%
Downstreams
518%

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

Upstreams of AS297
NetworkCountryRelationshipPathsVantage pts
AS209Lumen (ex. Qwest)USPeer8,56979
AS2914NTT America, Inc.USPeer6,21044
AS6762Telecom Italia Sparkle (Seabone)ITPeer1,18813
AS6939Hurricane Electric LLCUSPeer92762
AS2497Internet Initiative Japan Inc.JPPeer6055
AS293ESnetUSPeer2191
AS11537Internet2USPeer1751

Prefixes

All 29

The largest blocks AS297 originates, widest first.

Largest prefixes originated by AS297
PrefixAddressesVisibility
198.116.0.0/14262k77/77
198.120.0.0/14262k39/77
129.163.0.0/1665.5k77/77
161.40.0.0/1665.5k77/77
192.112.220.0/221k77/77
192.92.184.0/2351277/77
198.120.8.0/2351277/77
198.120.10.0/2351277/77
198.120.12.0/2351277/77
198.120.14.0/2351277/77

Routing health

How AS297'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

  • Valid13.8%4
  • Invalid0.0%0
  • No ROA86.2%25

Propagation

  • Globally propagated90% of full-feed peers or more96.6%28
  • Partially propagated40% to 90%3.4%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 28 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS297 started or stopped in this period.

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