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AS27563Spirit Communications

United StatesRegistryARIN

As of 27th September 2026, AS27563 (Spirit Communications), a network registered in the United States with ARIN, originates 31 IPv4 prefixes covering 24.3k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 6,341st-largest of the 79,523 networks we see originating IPv4, and the 2,128th-largest of 18,427 in the United States. It is seen behind 6 upstream networks, most often AS3257 (GTT Communications Inc.) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 15 downstream networks. None of its announcements have a valid RPKI ROA. 97% 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

31

IPv6 prefixes

6

IPv4 addresses

24.3k

IPv6 /64s

393k

Upstream graph

The networks AS27563 is seen behind, one and two hops out, drawn from real AS paths.

AS27563Toward the internet core
Upstream graph for AS27563: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS27563Spirit Communicat…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3257GTT Communication…AS6939Hurricane Electri…AS49544i3D.net B.VAS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS6667Elisa OyjAS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS27563 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

50

adjacent networks

Upstreams
612%
Peers
2958%
Downstreams
1530%

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

Upstreams of AS27563
NetworkCountryRelationshipPathsVantage pts
AS3257GTT Communications Inc.USPeer3,477101
AS1299Arelion (fka. Telia Carrier)SEPeer2,32795
AS174Cogent Communications, LLCUSPeer1,07542
AS6939Hurricane Electric LLCUSPeer24617
AS49544i3D.net B.VNLPeer362
AS2711Spirit CommunicationsUSPeer97

Prefixes

All 37

The largest blocks AS27563 originates, widest first.

Largest prefixes originated by AS27563
PrefixAddressesVisibility
206.219.128.0/1816.4k80/81
206.74.32.0/2351280/81
64.53.81.0/2425680/81
165.166.98.0/2425680/81
165.166.99.0/2425680/81
199.4.246.0/2425680/81
204.116.20.0/2425680/81
204.116.41.0/2425680/81
204.116.67.0/2425680/81
204.116.214.0/2425638/81

Routing health

How AS27563'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%37

Propagation

  • Globally propagated90% of full-feed peers or more97.3%36
  • Partially propagated40% to 90%2.7%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 31 prefixes

IPv6 — 6 prefixes

  • /4865.5k × /64100.0%6

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.