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AS7385Zayo (fka Allstream)

United StatesRegistryARINTypeEyeball

As of 27th September 2026, AS7385 (Zayo (fka Allstream)), an access network registered in the United States with ARIN, originates 73 IPv4 prefixes covering 1.7M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 317th-largest of the 79,525 networks we see originating IPv4, and the 76th-largest of 18,428 in the United States. It is seen behind 1 upstream network, most often AS6461 (Zayo Bandwidth), and in front of 64 downstream networks. 39% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% 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

73

IPv6 prefixes

3

IPv4 addresses

1.7M

IPv6 /64s

34.4B

Upstream graph

The networks AS7385 is seen behind, one and two hops out, drawn from real AS paths.

AS7385Toward the internet core
Upstream graph for AS7385: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS7385Zayo (fka Allstre…This networkAS6461Zayo BandwidthAS2914NTT America, Inc.AS32590Valve Corporation

Networks observed one and two hops upstream of AS7385 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

136

adjacent networks

Upstreams
11%
Peers
7152%
Downstreams
6447%

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

Upstreams of AS7385
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer14,313145

Prefixes

All 76

The largest blocks AS7385 originates, widest first.

Largest prefixes originated by AS7385
PrefixAddressesVisibility
67.136.0.0/14262k81/81
70.96.0.0/14262k81/81
67.50.0.0/15131k81/81
70.102.0.0/15131k81/81
208.186.0.0/15131k80/81
64.122.0.0/1665.5k81/81
66.224.0.0/1665.5k81/81
207.173.0.0/1665.5k80/81
209.63.0.0/1665.5k80/81
209.210.0.0/1665.5k80/81

Routing health

How AS7385'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

  • Valid39.5%30
  • Invalid0.0%0
  • No ROA60.5%46

Propagation

  • Globally propagated90% of full-feed peers or more100.0%76
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 73 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /6433.3%1
  • /4865.5k × /6466.7%2

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn2620:11f:100c::/4821st Sept 2026

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