subnet.im

AS1746SirsiDynix

United StatesRegistryARIN

As of 10th November 2026, AS1746 (SirsiDynix), a network registered in the United States with ARIN, originates 16 IPv4 prefixes covering 7.4k addresses. By IPv4 address space that makes it the 13,110th-largest of the 80,733 networks we see originating IPv4, and the 3,836th-largest of 18,751 in the United States. It is seen behind 3 upstream networks, most often AS13767 (DataBank Holdings, Ltd.) and AS15830 (Equinix, Inc.). 75% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 38% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

16

IPv6 prefixes

0

IPv4 addresses

7.4k

IPv6 /64s

0

Upstream graph

The networks AS1746 is seen behind, one and two hops out, drawn from real AS paths.

AS1746Toward the internet core
Upstream graph for AS1746: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS1746SirsiDynixThis networkAS13767DataBank Holdings…AS15830Equinix, Inc.AS29909Metro OpticAS3356Lumen (Level 3)AS6461Zayo BandwidthAS2914NTT America, Inc.AS1299Arelion (fka. Tel…AS3257GTT Communication…

Networks observed one and two hops upstream of AS1746 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS1746
NetworkCountryRelationshipPathsVantage pts
AS13767DataBank Holdings, Ltd.USPeer25576
AS15830Equinix, Inc.NLPeer22876
AS29909Metro OpticCAPeer41

Prefixes

The largest blocks AS1746 originates, widest first.

Largest prefixes originated by AS1746
PrefixAddressesVisibility
206.187.32.0/221k76/76
206.187.36.0/221k76/76
206.187.60.0/221k76/76
206.187.88.0/221k76/76
192.206.158.0/2351276/76
192.150.149.0/2425676/76
192.206.161.0/242561/76
192.206.162.0/2425622/76
206.187.24.0/242561/76
206.187.25.0/242561/76

Routing health

How AS1746'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

  • Valid75.0%12
  • Invalid0.0%0
  • No ROA25.0%4

Propagation

  • Globally propagated90% of full-feed peers or more37.5%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%62.5%10

Prefix sizes

IPv4 — 16 prefixes

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.