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AS398493System In Place

United StatesRegistryARIN

As of 11th November 2026, AS398493 (System In Place), a network registered in the United States with ARIN, originates 17 IPv4 prefixes covering 6.9k addresses and 27 IPv6 prefixes. By IPv4 address space that makes it the 13,539th-largest of the 80,747 networks we see originating IPv4, and the 3,939th-largest of 18,752 in the United States. It is seen behind 1 upstream network, most often AS6939 (Hurricane Electric LLC). 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

17

IPv6 prefixes

27

IPv4 addresses

6.9k

IPv6 /64s

68.6M

Upstream graph

The networks AS398493 is seen behind, one and two hops out, drawn from real AS paths.

AS398493Toward the internet core
Upstream graph for AS398493: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS398493System In PlaceThis networkAS6939Hurricane Electri…AS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS398493 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

11

adjacent networks

Upstreams
19%
Peers
1091%
Downstreams
00%

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

Upstreams of AS398493
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer2,966138

Prefixes

All 44

The largest blocks AS398493 originates, widest first.

Largest prefixes originated by AS398493
PrefixAddressesVisibility
74.117.196.0/221k76/76
104.250.236.0/221k76/76
204.197.160.0/221k76/76
144.225.246.0/2351276/76
23.161.112.0/2425676/76
23.185.72.0/2425676/76
69.176.84.0/2425676/76
107.149.33.0/2425676/76
108.186.51.0/2425676/76
108.186.146.0/2425676/76

Routing health

How AS398493'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%44
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%44
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 17 prefixes

IPv6 — 27 prefixes

  • /4016.8M × /6414.8%4
  • /4865.5k × /6485.2%23

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS398493 started or stopped in this period.

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