SUBNET.IM

AS21704New York City Board of Education

United StatesRegistryARIN

At a glance

IPv4 prefixes

24

IPv6 prefixes

0

IPv4 addresses

123k

IPv6 /64s

0

Upstream graph

The networks AS21704 is seen behind, one and two hops out, drawn from real AS paths.

AS21704Toward the internet core
Upstream graph for AS21704: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21704New York City Boa…This networkAS46887Zayo BandwidthAS3356Lumen (Level 3)AS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS21704 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

3

adjacent networks

Upstreams
133%
Peers
267%
Downstreams
00%

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

Upstreams of AS21704
NetworkCountryRelationshipPathsVantage pts
AS46887Zayo BandwidthUSPeer1,92080

Prefixes

The largest blocks AS21704 originates, widest first.

Largest prefixes originated by AS21704
PrefixAddressesVisibility
165.155.0.0/1665.5k80/80
165.155.64.0/1816.4k80/80
165.155.32.0/204.1k80/80
165.155.48.0/204.1k80/80
165.155.128.0/204.1k80/80
165.155.144.0/204.1k80/80
165.155.160.0/204.1k80/80
165.155.176.0/204.1k80/80
165.155.192.0/212k80/80
165.155.216.0/212k80/80

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