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AS13576SDN Communications

United StatesRegistryARIN

As of 13th November 2026, AS13576 (SDN Communications), a network registered in the United States with ARIN, originates 73 IPv4 prefixes covering 123k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 2,144th-largest of the 80,813 networks we see originating IPv4, and the 696th-largest of 18,770 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 50 downstream networks. 84% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers, and 5 prefixes are also originated by another network.

At a glance

IPv4 prefixes

73

IPv6 prefixes

3

IPv4 addresses

123k

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 networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3257GTT Communication…AS6939Hurricane Electri…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS398465Rackdog LLCAS20130Depaul UniversityAS132337Axclusive

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

125

adjacent networks

Upstreams
76%
Peers
6854%
Downstreams
5040%

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

Upstreams of AS13576
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer21,428105
AS1299Arelion (fka. Telia Carrier)SEPeer4,46127
AS2914NTT America, Inc.USPeer2,47818
AS3257GTT Communications Inc.USPeer1,35371
AS174Cogent Communications, LLCUSPeer7427
AS14537Continent 8 LLCUSPeer202
AS393417SDN CommunicationsUSPeer186

Prefixes

All 76

The largest blocks AS13576 originates, widest first.

Largest prefixes originated by AS13576
PrefixAddressesVisibility
66.115.192.0/1816.4k78/78
208.53.192.0/1816.4k78/78
216.106.192.0/1816.4k78/78
216.249.192.0/1816.4k78/78
64.33.224.0/198.2k78/78
66.128.160.0/198.2k78/78
66.231.0.0/198.2k78/78
68.168.224.0/204.1k78/78
209.151.176.0/204.1k78/78
206.85.176.0/212k78/78

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

  • Valid84.2%64
  • Invalid0.0%0
  • No ROA15.8%12

Propagation

  • Globally propagated90% of full-feed peers or more98.7%75
  • Partially propagated40% to 90%1.3%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 73 prefixes

IPv6 — 3 prefixes

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

Recent changes

Announcements that started or stopped since 14th Oct 2026.

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