subnet.im

AS27237Ardent Health Services, Inc.

United StatesRegistryARIN

As of 23rd October 2026, AS27237 (Ardent Health Services, Inc.), a network registered in the United States with ARIN, originates 7 IPv4 prefixes covering 1.8k addresses. By IPv4 address space that makes it the 29,828th-largest of the 79,658 networks we see originating IPv4, and the 6,816th-largest of 18,483 in the United States. It is seen behind 3 upstream networks, most often AS3356 (Lumen (Level 3)) and AS15164 (Segra (Unite)). None of its announcements have a valid RPKI ROA. 86% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

7

IPv6 prefixes

0

IPv4 addresses

1.8k

IPv6 /64s

0

Upstream graph

The networks AS27237 is seen behind, one and two hops out, drawn from real AS paths.

AS27237Toward the internet core
Upstream graph for AS27237: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS27237Ardent Health Ser…This networkAS3356Lumen (Level 3)AS7018AT&T Enterprises,…AS15164Segra (Unite)AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS1299Arelion (fka. Tel…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS27237 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 AS27237
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer25177
AS15164Segra (Unite)USPeer12377
AS7018AT&T Enterprises, LLCUSPeer8877

Prefixes

The largest blocks AS27237 originates, widest first.

Largest prefixes originated by AS27237
PrefixAddressesVisibility
199.248.10.0/2425677/77
204.10.211.0/242561/77
204.10.214.0/2425676/77
204.10.215.0/2425677/77
206.224.96.0/2425677/77
206.224.97.0/2425677/77
206.224.98.0/2425677/77

Routing health

How AS27237'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%7

Propagation

  • Globally propagated90% of full-feed peers or more85.7%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%14.3%1

Prefix sizes

IPv4 — 7 prefixes

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS27237 started or stopped in this period.

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