subnet.im

AS31863Centrilogic, Inc.

United StatesRegistryARIN

As of 27th September 2026, AS31863 (Centrilogic, Inc.), a network registered in the United States with ARIN, originates 55 IPv4 prefixes covering 50.7k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 4,416th-largest of the 79,525 networks we see originating IPv4, and the 1,574th-largest of 18,428 in the United States. It is seen behind 5 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS32505 (Conterra), and in front of 2 downstream networks. 10% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 95% 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

55

IPv6 prefixes

3

IPv4 addresses

50.7k

IPv6 /64s

4.3B

Upstream graph

The networks AS31863 is seen behind, one and two hops out, drawn from real AS paths.

AS31863Toward the internet core
Upstream graph for AS31863: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS31863Centrilogic, Inc.This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS6939Hurricane Electri…AS32505ConterraAS49544i3D.net B.VAS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS31863 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

22

adjacent networks

Upstreams
523%
Peers
1568%
Downstreams
29%

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

Upstreams of AS31863
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer2,08688
AS32505ConterraUSPeer1,40638
AS174Cogent Communications, LLCUSPeer78232
AS6939Hurricane Electric LLCUSPeer25061
AS49544i3D.net B.VNLPeer482

Prefixes

All 58

The largest blocks AS31863 originates, widest first.

Largest prefixes originated by AS31863
PrefixAddressesVisibility
23.92.208.0/204.1k81/81
104.171.112.0/204.1k81/81
192.111.144.0/204.1k81/81
192.198.80.0/204.1k81/81
192.254.64.0/204.1k81/81
104.152.184.0/212k81/81
162.248.240.0/212k81/81
172.98.192.0/212k81/81
199.241.184.0/212k81/81
216.126.192.0/212k81/81

Routing health

How AS31863'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

  • Valid10.3%6
  • Invalid1.7%1
  • No ROA87.9%51

Propagation

  • Globally propagated90% of full-feed peers or more94.8%55
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%5.2%3

Prefix sizes

IPv4 — 55 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6433.3%1
  • /4865.5k × /6466.7%2

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.