subnet.im

AS402186SeroWeb LLC

United StatesRegistryARIN

As of 11th November 2026, AS402186 (SeroWeb LLC), a network registered in the United States with ARIN, originates 1 IPv4 prefix covering 256 addresses. By IPv4 address space that makes it the 59,982nd-largest of the 80,747 networks we see originating IPv4, and the 13,089th-largest of 18,752 in the United States. It is seen behind 1 upstream network, most often AS21859 (Zenlayer Inc). None of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

256

IPv6 /64s

0

Upstream graph

The networks AS402186 is seen behind, one and two hops out, drawn from real AS paths.

AS402186Toward the internet core
Upstream graph for AS402186: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS402186SeroWeb LLCThis networkAS21859Zenlayer IncAS2914NTT America, Inc.AS4229Zenlayer Inc

Networks observed one and two hops upstream of AS402186 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS402186
NetworkCountryRelationshipPathsVantage pts
AS21859Zenlayer IncUSPeer11

Prefixes

The largest blocks AS402186 originates, widest first.

Largest prefixes originated by AS402186
PrefixAddressesVisibility
168.222.91.0/242561/76

Routing health

How AS402186'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
  • Invalid100.0%1
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%100.0%1

Prefix sizes

IPv4 — 1 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Withdrawn191.96.13.0/2422nd Oct 2026

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