subnet.im

AS7203Leaseweb USA, Inc.

United StatesRegistryARINTypeContent

As of 27th September 2026, AS7203 (Leaseweb USA, Inc.), a content network registered in the United States with ARIN, originates 157 IPv4 prefixes covering 186k addresses and 13 IPv6 prefixes. By IPv4 address space that makes it the 1,433rd-largest of the 79,525 networks we see originating IPv4, and the 410th-largest of 18,428 in the United States. It is seen behind 3 upstream networks, most often AS174 (Cogent Communications, LLC) and AS3257 (GTT Communications Inc.). 96% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 99% 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

157

IPv6 prefixes

13

IPv4 addresses

186k

IPv6 /64s

348B

Upstream graph

The networks AS7203 is seen behind, one and two hops out, drawn from real AS paths.

AS7203Toward the internet core
Upstream graph for AS7203: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS7203Leaseweb USA, Inc.This networkAS174Cogent Communicat…AS3257GTT Communication…AS3356Lumen (Level 3)AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS6667Elisa OyjAS398465Rackdog LLCAS2914NTT America, Inc.AS3549Lumen (fka. Globa…

Networks observed one and two hops upstream of AS7203 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 AS7203
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer6,84572
AS3257GTT Communications Inc.USPeer6,337118
AS3356Lumen (Level 3)USPeer3232

Prefixes

All 170

The largest blocks AS7203 originates, widest first.

Largest prefixes originated by AS7203
PrefixAddressesVisibility
23.108.160.0/204.1k80/81
209.58.128.0/204.1k80/81
23.19.88.0/212k80/81
23.81.104.0/212k80/81
23.81.176.0/212k80/81
23.82.0.0/212k80/81
23.82.16.0/212k80/81
23.82.64.0/212k80/81
23.82.168.0/212k80/81
23.105.16.0/212k80/81

Routing health

How AS7203'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

  • Valid95.9%163
  • Invalid0.0%0
  • No ROA4.1%7

Propagation

  • Globally propagated90% of full-feed peers or more98.8%168
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.2%2

Prefix sizes

IPv4 — 157 prefixes

IPv6 — 13 prefixes

  • /2934.4B × /6476.9%10
  • /324.3B × /647.7%1
  • /4865.5k × /6415.4%2

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Announced2a0a:2d07:b3::/4822nd Sept 2026
  • Withdrawn2607:f5b5:1::/4821st Sept 2026
  • Withdrawn2607:f5b5::/4821st Sept 2026
  • Withdrawn2a0f:1e84::/3221st Sept 2026

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