subnet.im

AS19148Leaseweb USA, Inc.

United StatesRegistryARINTypeEyeball

As of 27th September 2026, AS19148 (Leaseweb USA, Inc.), an access network registered in the United States with ARIN, originates 47 IPv4 prefixes covering 65.8k addresses and 13 IPv6 prefixes. By IPv4 address space that makes it the 3,521st-largest of the 79,525 networks we see originating IPv4, and the 1,213th-largest of 18,428 in the United States. It is seen behind 3 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3356 (Lumen (Level 3)). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 93% of its routes reach at least 90% of full-feed peers, and 4 prefixes are also originated by another network.

At a glance

IPv4 prefixes

47

IPv6 prefixes

13

IPv4 addresses

65.8k

IPv6 /64s

348B

Upstream graph

The networks AS19148 is seen behind, one and two hops out, drawn from real AS paths.

AS19148Toward the internet core
Upstream graph for AS19148: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19148Leaseweb USA, Inc.This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…

Networks observed one and two hops upstream of AS19148 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 AS19148
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer2,403123
AS3356Lumen (Level 3)USPeer1,22360
AS174Cogent Communications, LLCUSPeer69022

Prefixes

All 60

The largest blocks AS19148 originates, widest first.

Largest prefixes originated by AS19148
PrefixAddressesVisibility
23.81.224.0/198.2k80/81
23.81.48.0/204.1k80/81
23.81.16.0/212k80/81
23.81.88.0/212k80/81
23.81.120.0/212k80/81
23.81.128.0/212k80/81
23.81.144.0/212k80/81
23.81.192.0/212k80/81
23.82.152.0/212k80/81
23.83.128.0/212k80/81

Routing health

How AS19148'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%60
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more93.3%56
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%6.7%4

Prefix sizes

IPv4 — 47 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.

  • Announced23.19.52.0/2426th Sept 2026
  • Announced23.19.53.0/2426th Sept 2026
  • Announced2607:f5b5:2::/4826th Sept 2026
  • Announced2607:f5b5:3::/4826th Sept 2026
  • Withdrawn23.19.52.0/2425th Sept 2026
  • Withdrawn23.19.53.0/2425th Sept 2026
  • Withdrawn2607:f5b5:2::/4825th Sept 2026
  • Withdrawn2607:f5b5:3::/4825th Sept 2026
  • Withdrawn2602:299::/4421st Sept 2026

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