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AS3595zColo

United StatesRegistryARIN

As of 23rd October 2026, AS3595 (zColo), a network registered in the United States with ARIN, originates 5 IPv4 prefixes covering 3.3k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 19,552nd-largest of the 79,666 networks we see originating IPv4, and the 5,366th-largest of 18,482 in the United States. It is seen behind 1 upstream network, most often AS7226 (Latisys-Denver, LLC). 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

1

IPv4 addresses

3.3k

IPv6 /64s

65.5k

Upstream graph

The networks AS3595 is seen behind, one and two hops out, drawn from real AS paths.

AS3595Toward the internet core
Upstream graph for AS3595: 2 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS3595zColoThis networkAS7226Latisys-Denver, L…AS13767DataBank Holdings…

Networks observed one and two hops upstream of AS3595 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 AS3595
NetworkCountryRelationshipPathsVantage pts
AS7226Latisys-Denver, LLCUSPeer447139

Prefixes

The largest blocks AS3595 originates, widest first.

Largest prefixes originated by AS3595
PrefixAddressesVisibility
205.214.72.0/212k77/77
64.64.222.0/2351277/77
75.127.82.0/2425677/77
199.16.45.0/2425677/77
207.210.105.0/2425677/77
2606:ef80:6::/4865.5k × /6462/64

Routing health

How AS3595'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%6

Propagation

  • Globally propagated90% of full-feed peers or more100.0%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS3595 started or stopped in this period.

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