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AS397412Tachus Fiber Internet

United StatesRegistryARINTypeEyeball

As of 26th September 2026, AS397412 (Tachus Fiber Internet), an access network registered in the United States with ARIN, originates 18 IPv4 prefixes covering 165k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 1,552nd-largest of the 79,516 networks we see originating IPv4, and the 442nd-largest of 18,424 in the United States. It is seen behind 1 upstream network, most often AS174 (Cogent Communications, LLC), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers, and 19 prefixes are also originated by another network.

At a glance

IPv4 prefixes

18

IPv6 prefixes

1

IPv4 addresses

165k

IPv6 /64s

4.3B

Upstream graph

The networks AS397412 is seen behind, one and two hops out, drawn from real AS paths.

AS397412Toward the internet core
Upstream graph for AS397412: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS397412Tachus Fiber Inte…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…

Networks observed one and two hops upstream of AS397412 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

5

adjacent networks

Upstreams
120%
Peers
360%
Downstreams
120%

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

Upstreams of AS397412
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer71982

Prefixes

The largest blocks AS397412 originates, widest first.

Largest prefixes originated by AS397412
PrefixAddressesVisibility
98.96.0.0/1732.8k35/81
136.244.0.0/1816.4k36/81
139.94.64.0/1816.4k34/81
139.94.192.0/1816.4k34/81
69.8.64.0/198.2k35/81
98.96.0.0/198.2k35/81
98.96.32.0/198.2k35/81
98.96.64.0/198.2k35/81
98.96.96.0/198.2k35/81
136.244.0.0/198.2k36/81

Routing health

How AS397412'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%19
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%94.7%18
  • Seen by few peersUnder 40%5.3%1

Prefix sizes

IPv4 — 18 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

No announcement by AS397412 started or stopped in this period.

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