AS7203 — LEASEWEB-USA-SFO
Network type: hosting
AS7203 announces 110 IPv4 prefixes covering 185,344 addresses and 28 IPv6 prefixes.
About this network
A Leaseweb Autonomous System covering US operations (LEASEWEB-USA-SFO). Leaseweb is a large Netherlands-founded hosting provider; this ARIN-registered ASN carries its US-based dedicated, cloud, and colocation infrastructure.
What it's used for
- Dedicated servers, bare-metal, cloud, and colocation served from US datacenters.
Notable
- An IP here identifies Leaseweb as the host, not the tenant renting the capacity.
- Leaseweb operates several regional ASNs (e.g. Leaseweb Netherlands and Germany blocks); which one announces a prefix depends on the location.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 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
- 67.201.40.0/24
- 69.174.60.0/22
- 72.37.218.0/23
- 72.37.221.0/24
- 72.37.222.0/23
- 72.37.224.0/21
- 72.37.237.0/24
- 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
and 38 more.
Upstream networks
Adjacent networks
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Search Results
IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED