X4BNet datacenter and VPN lists

What it is

An open aggregate of hosting and VPN ranges maintained on GitHub, IPv4 and IPv6. It names no operator, so a hit answers the flag without a provider name; the named lists above come first in config order and win the name where they overlap. It also carries Apple's relay ranges, which is why a relay address answers is_vpn false unless a provider's own list names it.

What it answers

In the IP response this source feeds is_datacenter, is_vpn. Every answer names the datasets it read in its sources block with the date each was synced, so the figure on this page and the one in an answer are the same figure.

curl https://spaw.co/api/v1/ip \
  -H "Authorization: Bearer $SPAW_KEY" \
  -H "Content-Type: application/json" \
  -d '{"ip": "203.0.113.9"}'

How to read this page

A source names a network or an operator, never a person. An address inside one of these ranges tells you what the connection is — a cloud instance, a VPN exit, a gateway, a listed host — and nothing about who is behind it.

More sources in aggregate lists

• Every source
• Every field, documented
• Look up an address

counts and dates read from the installed feed · checked 2026-09-13