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AS40463Alabama Fiber Network

United StatesRegistryARINTypeCarrier

As of 11th November 2026, AS40463 (Alabama Fiber Network), a transit carrier registered in the United States with ARIN, originates 1 IPv4 prefix covering 2k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 25,847th-largest of the 80,747 networks we see originating IPv4, and the 6,393rd-largest of 18,752 in the United States. It is seen behind 6 upstream networks, most often AS2914 (NTT America, Inc.) and AS6939 (Hurricane Electric LLC), and in front of 16 downstream networks. 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

1

IPv6 prefixes

1

IPv4 addresses

2k

IPv6 /64s

4.3B

Upstream graph

The networks AS40463 is seen behind, one and two hops out, drawn from real AS paths.

AS40463Toward the internet core
Upstream graph for AS40463: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS40463Alabama Fiber Net…This networkAS2914NTT America, Inc.AS6939Hurricane Electri…AS35280F5 Networks SARLAS40111Parker FiberNet, …AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS20130Depaul UniversityAS132337AxclusiveAS32590Valve CorporationAS1299Arelion (fka. Tel…AS6461Zayo BandwidthAS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS40463 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

54

adjacent networks

Upstreams
611%
Peers
3259%
Downstreams
1630%

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

Upstreams of AS40463
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer6,373124
AS6939Hurricane Electric LLCUSPeer38015
AS49544i3D.net B.VNLPeer1522
AS35280F5 Networks SARLFRPeer1081
AS40111Parker FiberNet, LLCUSPeer3636
AS137409GSL Networks Pty LTDAUPeer22

Prefixes

The largest blocks AS40463 originates, widest first.

Largest prefixes originated by AS40463
PrefixAddressesVisibility
209.178.216.0/212k76/76
2602:f9fd::/324.3B × /6462/63

Routing health

How AS40463'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%2
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS40463 started or stopped in this period.

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