AS28573 Claro NXT (formerly Leaseweb BR)
datacenter · based in Brazil · IPLogs default verdict: Datacenter IP
- ASN
- AS28573
- Name
- Claro NXT (formerly Leaseweb BR)
- Category
- datacenter
- Country
- Brazil
- IPLogs verdict
- Datacenter IP
- Proxy backbone
- Yes
About Claro NXT (formerly Leaseweb BR)
Legacy Leaseweb BR ASN, now Claro NXT. Residential-proxy backbone member.
How IPLogs classifies AS28573
When the detection engine sees an IP that routes through AS28573, it checks three lists: (1) the curated VPN-provider ASN list, (2) the datacenter / hosting ASN list, and (3) the trusted CDN allowlist. Matches produce one of vpn_asn, dc_ip, or no flag respectively. Keywords in the org name (e.g. "vpn", "proxy", "anonym") may also trigger vpn_org_keyword even for unknown ASNs.
Use the ASN as a shortcut when you want to block a whole hosting provider at the edge rather than maintaining a per-IP list.
Authoritative sources for AS28573
Third-party registries where you can verify the announcements, peer relationships, and WHOIS registration for this ASN.
Frequently asked questions about AS28573
+Is AS28573 (Claro NXT (formerly Leaseweb BR)) a VPN, datacenter, or residential network?
IPLogs classifies Claro NXT (formerly Leaseweb BR) (AS28573) as a datacenter / hosting network based in Brazil. The default verdict for any IP that routes through this ASN is "Datacenter IP".
+Is AS28573 a residential proxy backbone?
Yes. Claro NXT (formerly Leaseweb BR) (AS28573) is a known residential-proxy backbone. IPLogs flags IPs from this ASN with the residential_proxy_backbone signal, which raises the suspicion score even when the IP otherwise looks residential.
+Who operates AS28573 and where is it registered?
Claro NXT (formerly Leaseweb BR) (AS28573) operates in Brazil.
+How do I check or block AS28573 traffic?
Send any suspect IP to the IPLogs API — POST https://iplogs.com/v1/check with body {"ip":"<ip>"} — and the response reports the originating ASN plus whether it matched the VPN, datacenter, or CDN lists. To block a whole hosting network at the edge, filter on AS28573 instead of maintaining a per-IP list. Copy-paste recipes for Cloudflare WAF, Nginx, and Stripe Radar are at /guides/block-vpn-traffic.