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AS19963Dutchess County BOCES

United StatesRegistryARIN

As of 24th October 2026, AS19963 (Dutchess County BOCES), a network registered in the United States with ARIN, originates 5 IPv4 prefixes covering 20.5k addresses. By IPv4 address space that makes it the 6,947th-largest of the 79,682 networks we see originating IPv4, and the 2,288th-largest of 18,492 in the United States. It is seen behind 1 upstream network, most often AS46887 (Zayo (fka. Crown Castle)). 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

5

IPv6 prefixes

0

IPv4 addresses

20.5k

IPv6 /64s

0

Upstream graph

The networks AS19963 is seen behind, one and two hops out, drawn from real AS paths.

AS19963Toward the internet core
Upstream graph for AS19963: 2 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19963Dutchess County B…This networkAS46887Zayo (fka. Crown …AS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS19963 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 AS19963
NetworkCountryRelationshipPathsVantage pts
AS46887Zayo (fka. Crown Castle)USPeer38076

Prefixes

The largest blocks AS19963 originates, widest first.

Largest prefixes originated by AS19963
PrefixAddressesVisibility
64.75.64.0/204.1k76/76
64.75.112.0/204.1k76/76
64.90.240.0/204.1k76/76
207.241.240.0/204.1k76/76
209.222.32.0/204.1k76/76

Routing health

How AS19963'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%5

Propagation

  • Globally propagated90% of full-feed peers or more100.0%5
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

Recent changes

Announcements that started or stopped since 25th Sept 2026.

No announcement by AS19963 started or stopped in this period.

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