AS7203 Leaseweb USA, Inc.

LEASEWEB-USA-SFO - Leaseweb USA, Inc. · registered in the United States

IPv4 addresses180,480103 prefixes · 0.006% of announced IPv4

Rank in United States#354largest network in US by IPv4 space, of 18,338 · 0.01% of US

Rank worldwide#1,167of 79,396 networks with IPv4

IPv681 x /32 (5,308,417 x /48)28 prefixes

CountryUnited States18,679 ASNs registered there

Open AS7203 in ASN lookup Look up an IP in this network (23.19.88.1) All networks in United States

IPv4 prefixes

All 103 prefixes, in address order.

23.19.88.0/21
23.19.164.0/22
23.19.198.0/24
23.19.212.0/22
23.19.252.0/22
23.81.8.0/21
23.81.84.0/22
23.81.96.0/20
23.81.112.0/21
23.81.160.0/21
23.81.168.0/22
23.81.176.0/21
23.81.200.0/22
23.81.220.0/22
23.82.0.0/21
23.82.16.0/20
23.82.48.0/22
23.82.56.0/22
23.82.64.0/21
23.82.88.0/21
23.82.96.0/21
23.82.112.0/21
23.82.124.0/22
23.82.132.0/22
23.82.168.0/21
23.82.176.0/21
23.82.236.0/22
23.83.152.0/21
23.83.160.0/21
23.83.176.0/21
23.105.16.0/20
23.105.96.0/19
23.106.44.0/22
23.106.88.0/21
23.106.160.0/20
23.106.184.0/21
23.108.108.0/22
23.108.112.0/21
23.108.120.0/22
23.108.160.0/19
23.108.192.0/21
23.108.204.0/22
64.64.20.0/22
64.64.24.0/21
84.75.144.0/24
108.62.160.0/22
108.62.244.0/23
108.177.160.0/21
142.91.24.0/21
142.91.36.0/22
142.91.136.0/21
142.91.168.0/21
142.91.212.0/22
142.234.8.0/21
142.234.48.0/21
142.234.56.0/22
142.234.80.0/21
142.234.96.0/21
142.234.120.0/21
142.234.128.0/21
142.234.144.0/21
142.234.192.0/21
147.255.16.0/21
147.255.48.0/20
147.255.112.0/22
147.255.120.0/21
147.255.160.0/21
147.255.176.0/20
152.163.8.0/22
152.163.28.0/22
152.163.52.0/22
152.163.128.0/22
152.163.156.0/22
152.163.180.0/22
152.163.204.0/22
152.163.232.0/22
172.241.8.0/21
172.241.56.0/21
172.241.72.0/21
172.241.104.0/21
172.241.124.0/22
172.241.172.0/22
172.241.196.0/22
172.241.204.0/22
172.241.208.0/22
172.241.248.0/21
172.255.24.0/21
172.255.32.0/21
172.255.112.0/20
173.208.122.0/24
173.234.92.0/22
173.234.112.0/22
179.61.166.0/24
179.61.245.0/24
191.96.130.0/24
191.101.41.0/24
199.38.112.0/22
199.167.46.0/23
199.223.208.0/22
206.214.208.0/21
209.58.128.0/20
212.42.197.0/24
212.42.205.0/24

IPv6 prefixes

All 28 prefixes.

2605:fe80::/33
2605:fe80:8000::/34
2605:fe80:c000::/35
2605:fe80:e000::/36
2605:fe80:f000::/37
2605:fe80:f800::/38
2605:fe80:fc00::/39
2605:fe80:fe00::/40
2605:fe80:ff00::/41
2605:fe80:ff80::/42
2605:fe80:ffc0::/43
2605:fe80:ffe0::/44
2605:fe80:fff0::/45
2605:fe80:fff8::/46
2605:fe80:fffc::/47
2605:fe80:fffe::/48
2605:fe80:ffff::/48
2a09:30c0::/29
2a0a:2d07:b3::/48
2a11:2240::/29
2a11:3740::/29
2a11:5140::/29
2a11:6b40::/29
2a11:8fc0::/29
2a11:b540::/29
2a11:cd80::/29
2a11:d740::/29
2a12:c000::/29

Other ASNs named Leaseweb USA, Inc.

8 other networks use the same organisation name; together with AS7203 they announce 1,311,232 IPv4 addresses.

ASNNameIPv4 addresses

AS395954LEASEWEB-USA-LAX - Leaseweb USA, Inc. US552,192

AS30633LEASEWEB-USA-WDC - Leaseweb USA, Inc. US152,064

AS396190LEASEWEB-USA-SEA - Leaseweb USA, Inc. US127,488

AS27411LEASEWEB-USA-CHI - Leaseweb USA, Inc. US89,856

AS396362LEASEWEB-USA-NYC - Leaseweb USA, Inc. US66,560

AS19148LEASEWEB-USA-PHX - Leaseweb USA, Inc. US64,256

AS394380LEASEWEB-USA-DAL - Leaseweb USA, Inc. US49,408

AS393886LEASEWEB-USA-MIA - Leaseweb USA, Inc. US28,928

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources