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AS46435IRON

United StatesRegistryARIN

As of 11th November 2026, AS46435 (IRON), a network registered in the United States with ARIN, originates 13 IPv4 prefixes covering 4.1k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 17,379th-largest of the 80,747 networks we see originating IPv4, and the 4,864th-largest of 18,752 in the United States. It is seen behind 6 upstream networks, most often AS6461 (Zayo Bandwidth) and AS3356 (Lumen (Level 3)), and in front of 12 downstream networks. 13% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 88% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

13

IPv6 prefixes

3

IPv4 addresses

4.1k

IPv6 /64s

4.3B

Upstream graph

The networks AS46435 is seen behind, one and two hops out, drawn from real AS paths.

AS46435Toward the internet core
Upstream graph for AS46435: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS46435IRONThis networkAS3356Lumen (Level 3)AS6461Zayo BandwidthAS6939Hurricane Electri…AS11164Internet2 I2PXAS11537Internet2AS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS32590Valve CorporationAS20130Depaul UniversityAS132337AxclusiveAS2152CENIC - CalRENAS2497Internet Initiati…

Networks observed one and two hops upstream of AS46435 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

38

adjacent networks

Upstreams
616%
Peers
2053%
Downstreams
1232%

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

Upstreams of AS46435
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer1,923134
AS3356Lumen (Level 3)USPeer94346
AS6939Hurricane Electric LLCUSPeer1807
AS11164Internet2 I2PXUSPeer5911
AS11537Internet2USPeer161
AS293ESnetUSPeer151

Prefixes

The largest blocks AS46435 originates, widest first.

Largest prefixes originated by AS46435
PrefixAddressesVisibility
74.121.176.0/221k76/76
8.23.152.0/2425675/76
8.23.153.0/2425676/76
8.23.154.0/2425676/76
8.23.155.0/2425676/76
74.118.16.0/2425676/76
74.118.17.0/2425676/76
74.118.18.0/2425676/76
74.118.19.0/242562/76
74.118.22.0/2425676/76

Routing health

How AS46435'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

  • Valid12.5%2
  • Invalid0.0%0
  • No ROA87.5%14

Propagation

  • Globally propagated90% of full-feed peers or more87.5%14
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%12.5%2

Prefix sizes

IPv4 — 13 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6433.3%1
  • /4865.5k × /6466.7%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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