subnet.im

AS19528US Signal Company, L.L.C.

United StatesRegistryARIN

As of 12th November 2026, AS19528 (US Signal Company, L.L.C.), a network registered in the United States with ARIN, originates 16 IPv4 prefixes covering 8.4k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 11,831st-largest of the 80,772 networks we see originating IPv4, and the 3,519th-largest of 18,759 in the United States. It is seen behind 4 upstream networks, most often AS6515 (DACS-IX) and AS6461 (Zayo Bandwidth), and in front of 1 downstream network. 82% 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

16

IPv6 prefixes

1

IPv4 addresses

8.4k

IPv6 /64s

2.1B

Upstream graph

The networks AS19528 is seen behind, one and two hops out, drawn from real AS paths.

AS19528Toward the internet core
Upstream graph for AS19528: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19528US Signal Company…This networkAS2914NTT America, Inc.AS3356Lumen (Level 3)AS6461Zayo BandwidthAS6515DACS-IXAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS3549Lumen (fka. Globa…AS32590Valve CorporationAS6939Hurricane Electri…

Networks observed one and two hops upstream of AS19528 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

10

adjacent networks

Upstreams
440%
Peers
550%
Downstreams
110%

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

Upstreams of AS19528
NetworkCountryRelationshipPathsVantage pts
AS6515DACS-IXUSPeer56578
AS6461Zayo BandwidthUSPeer432141
AS2914NTT America, Inc.USPeer19839
AS3356Lumen (Level 3)USPeer19639

Prefixes

The largest blocks AS19528 originates, widest first.

Largest prefixes originated by AS19528
PrefixAddressesVisibility
68.64.56.0/212k78/78
64.40.200.0/221k78/78
74.209.184.0/221k78/78
172.81.24.0/221k78/78
74.209.170.0/2351278/78
68.64.57.0/2425678/78
68.64.61.0/2425678/78
68.69.1.0/2425678/78
68.69.2.0/2425678/78
74.209.164.0/2425678/78

Routing health

How AS19528'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

  • Valid82.4%14
  • Invalid0.0%0
  • No ROA17.6%3

Propagation

  • Globally propagated90% of full-feed peers or more100.0%17
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 16 prefixes

IPv6 — 1 prefixes

  • /332.1B × /64100.0%1

Recent changes

Announcements that started or stopped since 13th Oct 2026.

No announcement by AS19528 started or stopped in this period.

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