IPv4-uitputting

Name: IPv4 Address Exhaustion Tracker
Creator: WorldIP.io
License: https://creativecommons.org/licenses/by/4.0/

De 32-bit IPv4-adresruimte heeft een harde limiet van 4.294.967.296 adressen. IANA heeft zijn laatste ongereserveerde /8 toegewezen op 3 februari 2011.

85.88%

van IPv4-ruimte toegewezen

Allocated

3,688.41M

3,688,410,974

Unallocated / reserved

606.56M

606,556,322

Total IPv4

4,294.97M

2³²

By Regional Internet Registry

RIR	IPs managed	Share of allocated	Prefixes
ARIN	1,648.07M	44.6%	310,200
APNIC	890.24M	24.1%	65,835
RIPE	853.83M	23.1%	278,604
LACNIC	183.06M	5.0%	15,806
AFRINIC	116.13M	3.1%	17,942

Timeline

1981 — IPv4 defined in RFC 791.
1993 — Classful addressing replaced with CIDR (RFC 1519) to slow exhaustion.
Feb 2011 — IANA allocates the last /8 to APNIC. Top-level free pool exhausted.
Apr 2011 — APNIC enters "last /8" policy (1 /22 per LIR).
Sep 2012 — RIPE NCC enters last /8 policy.
Jun 2014 — LACNIC free pool exhausted.
Sep 2015 — ARIN free pool exhausted.
Nov 2019 — RIPE NCC runs out (single /22 allocations only from waitlist).
Ongoing — All new allocations come from returns, transfers, or waitlists. Secondary market prices ~$25–50/IP.