subnet.im

AS399936PBXIO LLC

United StatesRegistryARIN

As of 23rd October 2026, AS399936 (PBXIO LLC), a network registered in the United States with ARIN, originates 2 IPv4 prefixes covering 512 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 48,614th-largest of the 79,652 networks we see originating IPv4, and the 10,384th-largest of 18,475 in the United States. It is seen behind 3 upstream networks, most often AS6315 (XMission, L.C.) and AS4226 (Sumofiber). 33% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 67% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

2

IPv6 prefixes

1

IPv4 addresses

512

IPv6 /64s

268M

Upstream graph

The networks AS399936 is seen behind, one and two hops out, drawn from real AS paths.

AS399936Toward the internet core
Upstream graph for AS399936: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS399936PBXIO LLCThis networkAS4226SumofiberAS6315XMission, L.C.AS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS6461Zayo BandwidthAS62494UTOPIAAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS399936 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS399936
NetworkCountryRelationshipPathsVantage pts
AS6315XMission, L.C.USPeer10052
AS4226SumofiberUSPeer5429
AS6939Hurricane Electric LLCUSPeer2323

Prefixes

The largest blocks AS399936 originates, widest first.

Largest prefixes originated by AS399936
PrefixAddressesVisibility
23.187.208.0/2425677/77
208.83.224.0/2425677/77
2602:fc38::/36268M × /6423/64

Routing health

How AS399936'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

  • Valid33.3%1
  • Invalid0.0%0
  • No ROA66.7%2

Propagation

  • Globally propagated90% of full-feed peers or more66.7%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%33.3%1

Prefix sizes

IPv4 — 2 prefixes

IPv6 — 1 prefixes

  • /36268M × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS399936 started or stopped in this period.

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