subnet.im

AS101Pacific Northwest Gigapop

United StatesRegistryARINTypeCarrier

As of 22nd October 2026, AS101 (Pacific Northwest Gigapop), a transit carrier registered in the United States with ARIN, originates 4 IPv4 prefixes covering 8.4k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 11,613th-largest of the 79,655 networks we see originating IPv4, and the 3,449th-largest of 18,475 in the United States. It is seen behind 19 upstream networks, most often AS3356 (Lumen (Level 3)) and AS174 (Cogent Communications, LLC), and in front of 18 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 86% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

4

IPv6 prefixes

3

IPv4 addresses

8.4k

IPv6 /64s

6.4B

Upstream graph

The networks AS101 is seen behind, one and two hops out, drawn from real AS paths.

AS101Toward the internet core
Upstream graph for AS101: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS101Pacific Northwest…This networkAS174Cogent Communicat…AS2497Internet Initiati…AS3356Lumen (Level 3)AS3491PCCW Global (HK) …AS6939Hurricane Electri…AS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS24516Virtutel Pty LtdAS58511Swoop (Anycast Gl…AS20130Depaul University

Networks observed one and two hops upstream of AS101 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

115

adjacent networks

Upstreams
1917%
Peers
7868%
Downstreams
1816%

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

Upstreams of AS101
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer5,86381
AS174Cogent Communications, LLCUSPeer4,47245
AS3491PCCW Global (HK) Ltd.HKPeer1,4727
AS6939Hurricane Electric LLCUSPeer1,12121
AS2497Internet Initiative Japan Inc.JPPeer7805
AS49544i3D.net B.VNLPeer5494
AS18106Viewqwest Pte LtdSGPeer4692
AS11164Internet2 I2PXUSPeer45829
AS35280F5 Networks SARLFRPeer4123
AS24482SG.GSSGPeer3384

Prefixes

The largest blocks AS101 originates, widest first.

Largest prefixes originated by AS101
PrefixAddressesVisibility
209.124.176.0/204.1k77/77
209.124.176.0/212k77/77
209.124.184.0/212k77/77
207.231.241.0/242561/77
2001:1860::/324.3B × /6462/64
2001:1860:4000::/341.1B × /6462/64
2001:1860:8000::/341.1B × /6462/64

Routing health

How AS101'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

  • Valid100.0%7
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more85.7%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%14.3%1

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6433.3%1
  • /341.1B × /6466.7%2

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

  • Announced207.231.241.0/2419th Oct 2026
  • Withdrawn207.231.240.0/206th Oct 2026
  • Withdrawn2001:504:b::/484th Oct 2026

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