subnet.im

AS18874Vantor Parent Inc.

United StatesRegistryARIN

As of 12th November 2026, AS18874 (Vantor Parent Inc.), a network registered in the United States with ARIN, originates 10 IPv4 prefixes covering 2.6k addresses. By IPv4 address space that makes it the 23,479th-largest of the 80,775 networks we see originating IPv4, and the 5,888th-largest of 18,762 in the United States. It is seen behind 6 upstream networks, most often AS6461 (Zayo Bandwidth) and AS3356 (Lumen (Level 3)). 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

10

IPv6 prefixes

0

IPv4 addresses

2.6k

IPv6 /64s

0

Upstream graph

The networks AS18874 is seen behind, one and two hops out, drawn from real AS paths.

AS18874Toward the internet core
Upstream graph for AS18874: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS18874Vantor Parent Inc.This networkAS3356Lumen (Level 3)AS6208FiberXAS6461Zayo BandwidthAS8473Bahnhof ABAS33561Lunavi, Inc.AS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS3257GTT Communication…AS6939Hurricane Electri…AS32590Valve CorporationAS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS18874 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

12

adjacent networks

Upstreams
650%
Peers
650%
Downstreams
00%

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

Upstreams of AS18874
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer26769
AS3356Lumen (Level 3)USPeer18349
AS33561Lunavi, Inc.USPeer15477
AS6208FiberXPRPeer7878
AS8473Bahnhof ABSEPeer7878
AS209Lumen (ex. Qwest)USPeer189

Prefixes

The largest blocks AS18874 originates, widest first.

Largest prefixes originated by AS18874
PrefixAddressesVisibility
158.184.208.0/2425678/78
158.184.209.0/2425678/78
158.184.210.0/2425677/78
158.184.211.0/2425678/78
158.184.212.0/2425678/78
158.184.214.0/2425678/78
158.184.215.0/2425678/78
158.184.216.0/2425678/78
173.242.16.0/2425677/78
205.166.175.0/2425678/78

Routing health

How AS18874'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%10

Propagation

  • Globally propagated90% of full-feed peers or more100.0%10
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 10 prefixes

Recent changes

Announcements that started or stopped since 13th Oct 2026.

No announcement by AS18874 started or stopped in this period.

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