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AS511Prisma Health

United StatesRegistryARIN

As of 23rd October 2026, AS511 (Prisma Health), a network registered in the United States with ARIN, originates 1 IPv4 prefix covering 256 addresses. By IPv4 address space that makes it the 59,186th-largest of the 79,658 networks we see originating IPv4, and the 12,886th-largest of 18,483 in the United States. It is seen behind 1 upstream network, most often AS2711 (Spirit Communications). None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

256

IPv6 /64s

0

Upstream graph

The networks AS511 is seen behind, one and two hops out, drawn from real AS paths.

AS511Toward the internet core
Upstream graph for AS511: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS511Prisma HealthThis networkAS2711Spirit Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS511 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS511
NetworkCountryRelationshipPathsVantage pts
AS2711Spirit CommunicationsUSPeer7777

Prefixes

The largest blocks AS511 originates, widest first.

Largest prefixes originated by AS511
PrefixAddressesVisibility
199.15.151.0/2425677/77

Routing health

How AS511'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%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%1
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS511 started or stopped in this period.

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