subnet.im

AS19257SUBRIGO CORPORATION

United StatesRegistryARIN

As of 26th September 2026, AS19257 (SUBRIGO CORPORATION), a network registered in the United States with ARIN, originates 39 IPv4 prefixes covering 20.7k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 6,894th-largest of the 79,516 networks we see originating IPv4, and the 2,281st-largest of 18,424 in the United States. It is seen behind 3 upstream networks, most often AS2914 (NTT America, Inc.) and AS174 (Cogent Communications, LLC), and in front of 7 downstream networks. 85% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 95% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

39

IPv6 prefixes

1

IPv4 addresses

20.7k

IPv6 /64s

4.3B

Upstream graph

The networks AS19257 is seen behind, one and two hops out, drawn from real AS paths.

AS19257Toward the internet core
Upstream graph for AS19257: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19257SUBRIGO CORPORATI…This networkAS174Cogent Communicat…AS2914NTT America, Inc.AS54623One Internet Amer…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS3130RGnet OUAS49544i3D.net B.VAS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS19257 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

19

adjacent networks

Upstreams
316%
Peers
947%
Downstreams
737%

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

Upstreams of AS19257
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer5,181121
AS174Cogent Communications, LLCUSPeer1,29963
AS54623One Internet America, LLCUSPeer8080

Prefixes

All 40

The largest blocks AS19257 originates, widest first.

Largest prefixes originated by AS19257
PrefixAddressesVisibility
138.229.64.0/198.2k81/81
107.150.184.0/212k81/81
107.150.180.0/221k81/81
107.150.160.0/2351281/81
23.252.64.0/2425681/81
23.252.65.0/2425681/81
23.252.69.0/2425681/81
23.252.70.0/2425681/81
23.252.73.0/2425681/81
23.252.74.0/2425681/81

Routing health

How AS19257'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

  • Valid85.0%34
  • Invalid0.0%0
  • No ROA15.0%6

Propagation

  • Globally propagated90% of full-feed peers or more95.0%38
  • Partially propagated40% to 90%5.0%2
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 39 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

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.