subnet.im

AS396431T38Fax Incorporated

United StatesRegistryARIN

As of 12th November 2026, AS396431 (T38Fax Incorporated), a network registered in the United States with ARIN, originates 6 IPv4 prefixes covering 2.3k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 24,611th-largest of the 80,772 networks we see originating IPv4, and the 6,129th-largest of 18,759 in the United States. It is seen behind 8 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS2914 (NTT America, Inc.), and in front of 1 downstream network. 78% of its announcements have 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

6

IPv6 prefixes

3

IPv4 addresses

2.3k

IPv6 /64s

197k

Upstream graph

The networks AS396431 is seen behind, one and two hops out, drawn from real AS paths.

AS396431Toward the internet core
Upstream graph for AS396431: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS396431T38Fax Incorporat…This networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3356Lumen (Level 3)AS6939Hurricane Electri…AS24482SG.GSAS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS3549Lumen (fka. Globa…AS215859Hetzner Cloud - S…AS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS396431 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
821%
Peers
2976%
Downstreams
13%

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

Upstreams of AS396431
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer33450
AS2914NTT America, Inc.USPeer28945
AS6939Hurricane Electric LLCUSPeer21757
AS3356Lumen (Level 3)USPeer6022
AS49544i3D.net B.VNLPeer122
AS24482SG.GSSGPeer122
AS35280F5 Networks SARLFRPeer91
AS4775Globe TelecomsPHAdjacent31

Prefixes

The largest blocks AS396431 originates, widest first.

Largest prefixes originated by AS396431
PrefixAddressesVisibility
130.51.64.0/221k78/78
8.9.39.0/2425678/78
8.20.91.0/2425678/78
130.51.64.0/2425678/78
130.51.65.0/2425678/78
130.51.66.0/2425678/78
2620:53:a000::/4865.5k × /6464/64
2620:53:a002::/4865.5k × /6464/64
2620:53:a00a::/4865.5k × /6464/64

Routing health

How AS396431'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

  • Valid77.8%7
  • Invalid0.0%0
  • No ROA22.2%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%9
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 6 prefixes

IPv6 — 3 prefixes

  • /4865.5k × /64100.0%3

Recent changes

Announcements that started or stopped since 13th Oct 2026.

No announcement by AS396431 started or stopped in this period.

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