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AS13576SDN Communications

United StatesRegistryARIN

As of 27th September 2026, AS13576 (SDN Communications), a network registered in the United States with ARIN, originates 68 IPv4 prefixes covering 122k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 2,122nd-largest of the 79,523 networks we see originating IPv4, and the 680th-largest of 18,427 in the United States. It is seen behind 7 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 49 downstream networks. 83% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

68

IPv6 prefixes

3

IPv4 addresses

122k

IPv6 /64s

4.8B

Upstream graph

The networks AS13576 is seen behind, one and two hops out, drawn from real AS paths.

AS13576Toward the internet core
Upstream graph for AS13576: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS13576SDN CommunicationsThis networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3257GTT Communication…AS6461Zayo BandwidthAS6939Hurricane Electri…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS3130RGnet OUAS49544i3D.net B.VAS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS13576 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

122

adjacent networks

Upstreams
76%
Peers
6654%
Downstreams
4940%

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

Upstreams of AS13576
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer22,324113
AS1299Arelion (fka. Telia Carrier)SEPeer3,81725
AS2914NTT America, Inc.USPeer1,61412
AS3257GTT Communications Inc.USPeer1,45771
AS6461Zayo BandwidthUSPeer1,36537
AS174Cogent Communications, LLCUSPeer1,15011
AS14537Continent 8 LLCUSPeer162

Prefixes

All 71

The largest blocks AS13576 originates, widest first.

Largest prefixes originated by AS13576
PrefixAddressesVisibility
66.115.192.0/1816.4k81/81
208.53.192.0/1816.4k81/81
216.106.192.0/1816.4k81/81
216.249.192.0/1816.4k81/81
64.33.224.0/198.2k81/81
66.128.160.0/198.2k81/81
66.231.0.0/198.2k81/81
68.168.224.0/204.1k81/81
209.151.176.0/204.1k81/81
206.85.176.0/212k81/81

Routing health

How AS13576'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

  • Valid83.1%59
  • Invalid0.0%0
  • No ROA16.9%12

Propagation

  • Globally propagated90% of full-feed peers or more100.0%71
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 68 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6433.3%1
  • /36268M × /6466.7%2

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS13576 started or stopped in this period.

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