subnet.im

AS17378TierPoint, LLC

United StatesRegistryARIN

As of 27th September 2026, AS17378 (TierPoint, LLC), a network registered in the United States with ARIN, originates 391 IPv4 prefixes covering 1.1M addresses and 50 IPv6 prefixes. By IPv4 address space that makes it the 425th-largest of the 79,525 networks we see originating IPv4, and the 99th-largest of 18,428 in the United States. It is seen behind 24 upstream networks, most often AS6461 (Zayo Bandwidth) and AS3356 (Lumen (Level 3)), and in front of 125 downstream networks. 79% 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

391

IPv6 prefixes

50

IPv4 addresses

1.1M

IPv6 /64s

62.8B

Upstream graph

The networks AS17378 is seen behind, one and two hops out, drawn from real AS paths.

AS17378Toward the internet core
Upstream graph for AS17378: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS17378TierPoint, LLCThis networkAS174Cogent Communicat…AS3257GTT Communication…AS3356Lumen (Level 3)AS6461Zayo BandwidthAS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS6667Elisa OyjAS398465Rackdog LLCAS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS32590Valve Corporation

Networks observed one and two hops upstream of AS17378 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

364

adjacent networks

Upstreams
247%
Peers
21559%
Downstreams
12534%

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

Upstreams of AS17378
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer18,29676
AS3356Lumen (Level 3)USPeer13,401107
AS3257GTT Communications Inc.USPeer7,262104
AS174Cogent Communications, LLCUSPeer6,74063
AS6939Hurricane Electric LLCUSPeer2,61223
AS25091IP-Max SACHPeer1,0485
AS4826Vocus Connect International BackboneAUPeer8092
AS14537Continent 8 LLCUSPeer6554
AS18106Viewqwest Pte LtdSGPeer6532
AS49544i3D.net B.VNLPeer5752

Prefixes

All 441

The largest blocks AS17378 originates, widest first.

Largest prefixes originated by AS17378
PrefixAddressesVisibility
134.172.0.0/1665.5k80/81
146.202.0.0/1665.5k80/81
149.65.0.0/1665.5k80/81
167.25.0.0/1665.5k80/81
40.143.128.0/1732.8k80/81
72.249.0.0/1732.8k80/81
144.202.128.0/1732.8k80/81
40.142.64.0/1816.4k80/81
40.143.0.0/1816.4k80/81
65.99.192.0/1816.4k80/81

Routing health

How AS17378'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

  • Valid78.9%348
  • Invalid0.0%0
  • No ROA21.1%93

Propagation

  • Globally propagated90% of full-feed peers or more100.0%441
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 391 prefixes

IPv6 — 50 prefixes

  • /3017.2B × /642.0%1
  • /324.3B × /6418.0%9
  • /36268M × /6452.0%26
  • /441M × /6412.0%6
  • /4865.5k × /6416.0%8

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.