subnet.im

AS18530Isomedia, Inc.

United StatesRegistryARINTypeEyeball

As of 26th September 2026, AS18530 (Isomedia, Inc.), an access network registered in the United States with ARIN, originates 83 IPv4 prefixes covering 80.4k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 2,773rd-largest of the 79,516 networks we see originating IPv4, and the 890th-largest of 18,424 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

83

IPv6 prefixes

5

IPv4 addresses

80.4k

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 networkAS209Lumen (ex. Qwest)AS6939Hurricane Electri…AS11404Astound (fka. Wav…AS18106Viewqwest Pte LtdAS24482SG.GSAS3356Lumen (Level 3)AS20130Depaul UniversityAS1299Arelion (fka. Tel…AS3257GTT Communication…AS215859Hetzner Cloud - S…AS6453TATA Communicatio…AS38623Metfone (Viettel …

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

82

adjacent networks

Upstreams
1822%
Peers
4960%
Downstreams
1518%

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

Upstreams of AS18530
NetworkCountryRelationshipPathsVantage pts
AS209Lumen (ex. Qwest)USPeer7,520131
AS11404Astound (fka. Wave Broadband)USPeer3,906131
AS6939Hurricane Electric LLCUSPeer2,459132
AS18106Viewqwest Pte LtdSGPeer3692
AS24482SG.GSSGPeer3093
AS174Cogent Communications, LLCUSPeer30770
AS49544i3D.net B.VNLPeer1942
AS58511Swoop (Anycast Global Backbone)AUPeer1832
AS3130RGnet OUEEPeer1791
AS35280F5 Networks SARLFRPeer1791

Prefixes

All 88

The largest blocks AS18530 originates, widest first.

Largest prefixes originated by AS18530
PrefixAddressesVisibility
64.38.128.0/1816.4k81/81
66.114.128.0/198.2k81/81
206.124.128.0/198.2k81/81
207.115.64.0/198.2k81/81
216.9.0.0/198.2k81/81
216.9.16.0/212k81/81
64.38.180.0/221k80/81
199.66.140.0/221k81/81
199.181.164.0/221k81/81
206.129.112.0/221k81/81

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

  • Valid38.6%34
  • Invalid0.0%0
  • No ROA61.4%54

Propagation

  • Globally propagated90% of full-feed peers or more100.0%88
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 83 prefixes

IPv6 — 5 prefixes

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

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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