Reserved blocks are baked in offline. WHOIS, geo, and DNS need the network.

Special ranges (offline)

27 shown

Use IP Inspector or Subnet Membership to test an address against these blocks.

CIDR	Name	Notes
0.0.0.0/8	This network	RFC 1122 · Self-identification / current network
10.0.0.0/8	Private	RFC 1918 · Private use
100.64.0.0/10	CGNAT	RFC 6598 · Carrier-grade NAT shared address space
127.0.0.0/8	Loopback	RFC 1122 · Host loopback
169.254.0.0/16	Link-local	RFC 3927 · APIPA / link-local
172.16.0.0/12	Private	RFC 1918 · Private use
192.0.0.0/24	IETF protocol	RFC 6890 · IETF protocol assignments
192.0.2.0/24	Documentation	RFC 5737 · TEST-NET-1 documentation
192.168.0.0/16	Private	RFC 1918 · Private use
198.18.0.0/15	Benchmark	RFC 2544 · Network interconnect device benchmark
198.51.100.0/24	Documentation	RFC 5737 · TEST-NET-2 documentation
203.0.113.0/24	Documentation	RFC 5737 · TEST-NET-3 documentation
224.0.0.0/4	Multicast	RFC 5771 · IPv4 multicast
240.0.0.0/4	Reserved	RFC 1112 · Reserved for future use (class E)
255.255.255.255/32	Limited broadcast	RFC 919 · Limited broadcast
::/128	Unspecified	RFC 4291 · Unspecified address
::1/128	Loopback	RFC 4291 · Loopback
::ffff:0:0/96	IPv4-mapped	RFC 4291 · IPv4-mapped IPv6
64:ff9b::/96	NAT64	RFC 6052 · Well-known NAT64 prefix
100::/64	Discard	RFC 6666 · Discard-only prefix
2001::/32	Teredo	RFC 4380 · Teredo tunneling
2001:2::/48	Benchmark	RFC 5180 · Benchmarking
2001:db8::/32	Documentation	RFC 3849 · Documentation
2002::/16	6to4	RFC 3056 · 6to4
fc00::/7	ULA	RFC 4193 · Unique local addresses
fe80::/10	Link-local	RFC 4291 · Link-local unicast
ff00::/8	Multicast	RFC 4291 · IPv6 multicast

External lookups

These need the network and are intentionally not built into this offline tool. Open them in a new tab with your address.

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