subnet.im

AS13333Fidium

United StatesRegistryARINTypeEyeball

As of 10th November 2026, AS13333 (Fidium), an access network registered in the United States with ARIN, originates 40 IPv4 prefixes covering 172k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 1,532nd-largest of the 80,733 networks we see originating IPv4, and the 441st-largest of 18,751 in the United States. It is seen behind 3 upstream networks, most often AS6461 (Zayo Bandwidth) and AS174 (Cogent Communications, LLC), and in front of 9 downstream networks. None of its announcements have a valid RPKI ROA. 95% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

40

IPv6 prefixes

1

IPv4 addresses

172k

IPv6 /64s

4.3B

Upstream graph

The networks AS13333 is seen behind, one and two hops out, drawn from real AS paths.

AS13333Toward the internet core
Upstream graph for AS13333: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS13333FidiumThis networkAS174Cogent Communicat…AS6461Zayo BandwidthAS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS2914NTT America, Inc.AS32590Valve CorporationAS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS13333 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

26

adjacent networks

Upstreams
312%
Peers
1454%
Downstreams
935%

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

Upstreams of AS13333
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer1,81288
AS174Cogent Communications, LLCUSPeer1,37062
AS6939Hurricane Electric LLCUSPeer20210

Prefixes

All 41

The largest blocks AS13333 originates, widest first.

Largest prefixes originated by AS13333
PrefixAddressesVisibility
160.212.0.0/1665.5k1/76
209.195.128.0/1816.4k75/76
66.212.128.0/198.2k75/76
67.20.224.0/198.2k75/76
70.9.192.0/198.2k75/76
72.22.0.0/198.2k75/76
173.233.0.0/198.2k75/76
206.193.224.0/198.2k75/76
66.37.48.0/204.1k75/76
67.20.224.0/204.1k75/76

Routing health

How AS13333'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%41

Propagation

  • Globally propagated90% of full-feed peers or more95.1%39
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%4.9%2

Prefix sizes

IPv4 — 40 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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