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AS3912CHECS

United StatesRegistryARIN

As of 27th September 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 9,283rd-largest of the 79,525 networks we see originating IPv4, and the 2,897th-largest of 18,428 in the United States. It is seen behind 3 upstream networks, most often AS32505 (Conterra) and AS21782 (Plateau Telecommunications Incorporated), and in front of 6 downstream networks. None of its announcements have a valid RPKI ROA. 88% 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

15

adjacent networks

Upstreams
320%
Peers
640%
Downstreams
640%

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

Upstreams of AS3912
NetworkCountryRelationshipPathsVantage pts
AS32505ConterraUSPeer2,224143
AS21782Plateau Telecommunications IncorporatedUSPeer21779
AS40498New Mexico Lambda Rail, Inc.USPeer709

Prefixes

The largest blocks AS3912 originates, widest first.

Largest prefixes originated by AS3912
PrefixAddressesVisibility
206.206.128.0/198.2k81/81
204.134.56.0/2351281/81
216.161.32.0/2351257/81
63.225.1.0/2425657/81
192.65.78.0/2425681/81
192.88.137.0/2425681/81
192.88.138.0/2425681/81
192.88.139.0/2425681/81
198.59.187.0/2425681/81
204.134.48.0/2425681/81

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 more88.2%15
  • Partially propagated40% to 90%11.8%2
  • 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 28th Aug 2026.

  • Announced216.161.32.0/2327th Sept 2026
  • Announced63.225.1.0/2427th Sept 2026
  • Withdrawn216.161.32.0/2326th Sept 2026
  • Withdrawn63.225.1.0/2426th Sept 2026
  • Announced216.161.32.0/2323rd Sept 2026
  • Announced63.225.1.0/2423rd Sept 2026
  • Withdrawn216.161.32.0/2322nd Sept 2026
  • Withdrawn63.225.1.0/2422nd Sept 2026

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