subnet.im

AS397045D. Brown Management

United StatesRegistryARINTypeContent

As of 10th November 2026, AS397045 (D. Brown Management), a content network registered in the United States with ARIN, originates 1 IPv4 prefix covering 256 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 59,962nd-largest of the 80,733 networks we see originating IPv4, and the 13,080th-largest of 18,751 in the United States. It is seen behind 2 upstream networks, most often AS209 (Lumen (ex. Qwest)) and AS17018 (Quality Technology Services, LLC). 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

256

IPv6 /64s

1M

Upstream graph

The networks AS397045 is seen behind, one and two hops out, drawn from real AS paths.

AS397045Toward the internet core
Upstream graph for AS397045: 4 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS397045D. Brown Manageme…This networkAS209Lumen (ex. Qwest)AS17018Quality Technolog…AS3356Lumen (Level 3)AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS397045 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS397045
NetworkCountryRelationshipPathsVantage pts
AS209Lumen (ex. Qwest)USPeer121121
AS17018Quality Technology Services, LLCUSPeer1717

Prefixes

The largest blocks AS397045 originates, widest first.

Largest prefixes originated by AS397045
PrefixAddressesVisibility
199.233.129.0/2425676/76
2602:801:6000::/441M × /6462/63

Routing health

How AS397045'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

  • /441M × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS397045 started or stopped in this period.

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