subnet.im

AS31863Centrilogic, Inc.

United StatesRegistryARIN

As of 11th November 2026, AS31863 (Centrilogic, Inc.), a network registered in the United States with ARIN, originates 52 IPv4 prefixes covering 49.9k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 4,518th-largest of the 80,743 networks we see originating IPv4, and the 1,609th-largest of 18,754 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 3 downstream networks. 7% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 96% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

52

IPv6 prefixes

3

IPv4 addresses

49.9k

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…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS20130Depaul UniversityAS132337AxclusiveAS2914NTT 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

24

adjacent networks

Upstreams
521%
Peers
1667%
Downstreams
313%

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

Upstreams of AS31863
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer1,81668
AS32505ConterraUSPeer1,49336
AS174Cogent Communications, LLCUSPeer64123
AS6939Hurricane Electric LLCUSPeer26355
AS49544i3D.net B.VNLPeer502

Prefixes

All 55

The largest blocks AS31863 originates, widest first.

Largest prefixes originated by AS31863
PrefixAddressesVisibility
23.92.208.0/204.1k76/76
104.171.112.0/204.1k76/76
192.111.144.0/204.1k76/76
192.198.80.0/204.1k76/76
192.254.64.0/204.1k76/76
104.152.184.0/212k76/76
162.248.240.0/212k76/76
172.98.192.0/212k76/76
199.241.184.0/212k76/76
216.126.192.0/212k76/76

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

  • Valid7.3%4
  • Invalid0.0%0
  • No ROA92.7%51

Propagation

  • Globally propagated90% of full-feed peers or more96.4%53
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%3.6%2

Prefix sizes

IPv4 — 52 prefixes

IPv6 — 3 prefixes

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

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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