subnet.im

AS18747IFX Corporation

United StatesRegistryARINTypeContent

As of 26th September 2026, AS18747 (IFX Corporation), a content network registered in the United States with ARIN, originates 555 IPv4 prefixes covering 741k addresses and 26 IPv6 prefixes. By IPv4 address space that makes it the 562nd-largest of the 79,516 networks we see originating IPv4, and the 133rd-largest of 18,424 in the United States. It is seen behind 11 upstream networks, most often AS52468 (UFINET PANAMA S.A.) and AS174 (Cogent Communications, LLC), and in front of 26 downstream networks. 84% of its announcements have a valid RPKI ROA; 15 are RPKI-invalid. 93% of its routes reach at least 90% of full-feed peers, and 16 prefixes are also originated by another network.

At a glance

IPv4 prefixes

555

IPv6 prefixes

26

IPv4 addresses

741k

IPv6 /64s

31.1B

Upstream graph

The networks AS18747 is seen behind, one and two hops out, drawn from real AS paths.

AS18747Toward the internet core
Upstream graph for AS18747: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS18747IFX CorporationThis networkAS174Cogent Communicat…AS2914NTT America, Inc.AS6453TATA Communicatio…AS52245UFINET PANAMA S.A.AS52468UFINET PANAMA S.A.AS151326DCConnect Communi…AS3130RGnet OUAS49544i3D.net B.VAS1299Arelion (fka. Tel…AS8220COLTAS35280F5 Networks SARLAS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS18747 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

85

adjacent networks

Upstreams
1113%
Peers
4856%
Downstreams
2631%

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

Upstreams of AS18747
NetworkCountryRelationshipPathsVantage pts
AS52468UFINET PANAMA S.A.PAPeer26,290145
AS174Cogent Communications, LLCUSPeer11,505133
AS2914NTT America, Inc.USPeer7,031143
AS6453TATA Communications (America) IncUSPeer1,54480
AS52245UFINET PANAMA S.A. PAPeer1,40380
AS6939Hurricane Electric LLCUSPeer37112
AS7087Administración de Redes Colomsat S.A.COPeer1485
AS22411WIGO S.A.PEPeer10181
AS263793TECNET ARGENTINA S.A.ARPeer6464
AS3356Lumen (Level 3)USPeer562

Prefixes

All 581

The largest blocks AS18747 originates, widest first.

Largest prefixes originated by AS18747
PrefixAddressesVisibility
181.119.0.0/1665.5k81/81
190.60.0.0/1665.5k80/81
181.79.0.0/1732.8k80/81
181.119.0.0/1732.8k80/81
181.119.128.0/1732.8k80/81
190.61.128.0/1732.8k80/81
181.78.128.0/1816.4k80/81
186.33.0.0/1816.4k80/81
190.60.128.0/1816.4k80/81
190.60.192.0/1816.4k81/81

Routing health

How AS18747'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

  • Valid83.6%486
  • Invalid2.6%15
  • No ROA13.8%80

Propagation

  • Globally propagated90% of full-feed peers or more92.9%540
  • Partially propagated40% to 90%0.3%2
  • Seen by few peersUnder 40%6.7%39

Prefix sizes

IPv4 — 555 prefixes

IPv6 — 26 prefixes

  • /3017.2B × /643.8%1
  • /324.3B × /6411.5%3
  • /36268M × /6415.4%4
  • /424.2M × /647.7%2
  • /441M × /643.8%1
  • /4865.5k × /6457.7%15

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.