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AS3912CHECS

United StatesRegistryARIN

As of 11th November 2026, AS3912 (CHECS), a network registered in the United States with ARIN, originates 16 IPv4 prefixes covering 12.5k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 9,453rd-largest of the 80,747 networks we see originating IPv4, and the 2,943rd-largest of 18,752 in the United States. It is seen behind 3 upstream networks, most often AS32505 (Conterra) and AS40498 (New Mexico Lambda Rail, Inc.), and in front of 5 downstream networks. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

16

IPv6 prefixes

1

IPv4 addresses

12.5k

IPv6 /64s

4.3B

Upstream graph

The networks AS3912 is seen behind, one and two hops out, drawn from real AS paths.

AS3912Toward the internet core
Upstream graph for AS3912: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS3912CHECSThis networkAS21782Plateau Telecommu…AS32505ConterraAS40498New Mexico Lambda…AS6939Hurricane Electri…AS174Cogent Communicat…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS3912 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

14

adjacent networks

Upstreams
321%
Peers
643%
Downstreams
536%

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

Upstreams of AS3912
NetworkCountryRelationshipPathsVantage pts
AS32505ConterraUSPeer1,260137
AS40498New Mexico Lambda Rail, Inc.USPeer81282
AS21782Plateau Telecommunications IncorporatedUSPeer18763

Prefixes

The largest blocks AS3912 originates, widest first.

Largest prefixes originated by AS3912
PrefixAddressesVisibility
206.206.128.0/198.2k76/76
204.134.56.0/2351276/76
216.161.32.0/2351275/76
63.225.1.0/2425675/76
192.65.78.0/2425676/76
192.88.137.0/2425676/76
192.88.138.0/2425676/76
192.88.139.0/2425676/76
198.59.187.0/2425676/76
204.134.48.0/2425676/76

Routing health

How AS3912'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%17

Propagation

  • Globally propagated90% of full-feed peers or more100.0%17
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 16 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Announced216.161.32.0/236th Nov 2026
  • Announced63.225.1.0/246th Nov 2026
  • Withdrawn216.161.32.0/235th Nov 2026
  • Withdrawn63.225.1.0/245th Nov 2026
  • Announced216.161.32.0/2323rd Oct 2026
  • Announced2607:7840::/3223rd Oct 2026
  • Announced63.225.1.0/2423rd Oct 2026
  • Withdrawn216.161.32.0/2322nd Oct 2026
  • Withdrawn2607:7840::/3222nd Oct 2026
  • Withdrawn63.225.1.0/2422nd Oct 2026

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