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AS19871Network Solutions, LLC

United StatesRegistryARIN

As of 26th September 2026, AS19871 (Network Solutions, LLC), a network registered in the United States with ARIN, originates 202 IPv4 prefixes covering 250k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 1,138th-largest of the 79,516 networks we see originating IPv4, and the 312th-largest of 18,424 in the United States. It is seen behind 3 upstream networks, most often AS3356 (Lumen (Level 3)) and AS174 (Cogent Communications, LLC). 72% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 97% of its routes reach at least 90% of full-feed peers, and 6 prefixes are also originated by another network.

At a glance

IPv4 prefixes

202

IPv6 prefixes

16

IPv4 addresses

250k

IPv6 /64s

1M

Upstream graph

The networks AS19871 is seen behind, one and two hops out, drawn from real AS paths.

AS19871Toward the internet core
Upstream graph for AS19871: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19871Network Solutions…This networkAS174Cogent Communicat…AS3356Lumen (Level 3)AS26337Oso Grande IP Ser…AS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS3549Lumen (fka. Globa…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS19871 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

7

adjacent networks

Upstreams
343%
Peers
457%
Downstreams
00%

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

Upstreams of AS19871
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer8,725119
AS174Cogent Communications, LLCUSPeer7,013104
AS26337Oso Grande IP Services, LLCUSPeer96281

Prefixes

All 218

The largest blocks AS19871 originates, widest first.

Largest prefixes originated by AS19871
PrefixAddressesVisibility
50.6.128.0/1732.8k80/81
50.6.128.0/1816.4k80/81
50.6.192.0/1816.4k81/81
96.9.0.0/1816.4k80/81
50.6.192.0/198.2k80/81
50.6.224.0/198.2k81/81
207.204.0.0/198.2k80/81
209.16.96.0/204.1k80/81
209.237.176.0/204.1k80/81
50.116.96.0/212k80/81

Routing health

How AS19871'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

  • Valid71.6%156
  • Invalid0.0%0
  • No ROA28.4%62

Propagation

  • Globally propagated90% of full-feed peers or more97.2%212
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.8%6

Prefix sizes

IPv4 — 202 prefixes

IPv6 — 16 prefixes

  • /4865.5k × /64100.0%16

Recent changes

Announcements that started or stopped since 28th Aug 2026.

10 announced and 22 withdrawn in all; the most recent are shown.

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