subnet.im

AS18530Isomedia, Inc.

United StatesRegistryARINTypeEyeball

As of 11th November 2026, AS18530 (Isomedia, Inc.), an access network registered in the United States with ARIN, originates 84 IPv4 prefixes covering 80.6k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 2,815th-largest of the 80,743 networks we see originating IPv4, and the 908th-largest of 18,754 in the United States. It is seen behind 18 upstream networks, most often AS209 (Lumen (ex. Qwest)) and AS11404 (Astound (fka. Wave Broadband)), and in front of 15 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.

At a glance

IPv4 prefixes

84

IPv6 prefixes

5

IPv4 addresses

80.6k

IPv6 /64s

4.3B

Upstream graph

The networks AS18530 is seen behind, one and two hops out, drawn from real AS paths.

AS18530Toward the internet core
Upstream graph for AS18530: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS18530Isomedia, Inc.This networkAS174Cogent Communicat…AS209Lumen (ex. Qwest)AS6939Hurricane Electri…AS11404Astound (fka. Wav…AS18106Viewqwest Pte LtdAS151326DCConnect Communi…AS3356Lumen (Level 3)AS1299Arelion (fka. Tel…AS20130Depaul UniversityAS132337AxclusiveAS3257GTT Communication…AS215859Hetzner Cloud - S…

Networks observed one and two hops upstream of AS18530 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

84

adjacent networks

Upstreams
1821%
Peers
5161%
Downstreams
1518%

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

Upstreams of AS18530
NetworkCountryRelationshipPathsVantage pts
AS209Lumen (ex. Qwest)USPeer7,075121
AS11404Astound (fka. Wave Broadband)USPeer3,333125
AS6939Hurricane Electric LLCUSPeer2,329123
AS18106Viewqwest Pte LtdSGPeer3672
AS174Cogent Communications, LLCUSPeer33865
AS24482SG.GSSGPeer3074
AS21859Zenlayer IncUSPeer20721
AS49544i3D.net B.VNLPeer1932
AS58511Swoop (Anycast Global Backbone)AUPeer1822
AS3130RGnet OUEEPeer1791

Prefixes

All 89

The largest blocks AS18530 originates, widest first.

Largest prefixes originated by AS18530
PrefixAddressesVisibility
64.38.128.0/1816.4k76/76
66.114.128.0/198.2k76/76
206.124.128.0/198.2k76/76
207.115.64.0/198.2k76/76
216.9.0.0/198.2k76/76
216.9.16.0/212k76/76
64.38.180.0/221k75/76
199.66.140.0/221k76/76
199.181.164.0/221k76/76
206.129.112.0/221k76/76

Routing health

How AS18530'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

  • Valid39.3%35
  • Invalid0.0%0
  • No ROA60.7%54

Propagation

  • Globally propagated90% of full-feed peers or more100.0%89
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 84 prefixes

IPv6 — 5 prefixes

  • /324.3B × /6420.0%1
  • /4865.5k × /6480.0%4

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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