rirtracker

IPv6 range · 79,228,162,514,264,337,593,543,950,336 addresses

2604:2400::/32

Now

ARIN statistics
Reserved on 2026-10-09
Registry
Not known
Holder
Not looked up

Latest change

Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable)

Reported
2026-06-24
Confidence
Strong inference
Inventory
Possible future reissue candidate after hold

Hold

Removed
2026-06-24
Estimated hold end
2026-12-24 (earliest, from ARIN's published rule)
Now
Possible reissue candidate; not confirmed available.

Timeline since 2026-01-01 (1)

2026-06-24 Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Earliest estimated hold expiration 2026-12-24. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2010-06-17) on 2026-06-23 and reserved on 2026-06-25. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv6 for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2026-12-24. This does not confirm availability.

Evidence (3) · classifier 1.0.0,
  1. Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 2604:2400::/32 allocated on 2026-06-24, reserved on 2026-06-25 source · retrieved
  2. Before ARIN delegated statistics 2026-06-23 (produced 2026-06-23T09:00:21+00:00), before the report: allocated (dated 2010-06-17) source · retrieved
  3. After ARIN delegated statistics 2026-06-25 (produced 2026-06-25T09:00:20+00:00), after the report: reserved source · retrieved

Transfer records (1)

Date (UTC)TypeRange movedFromTo
Merger acquisition2604:2400::/32 Preferred Connections, Inc. NW ARINVFOregon LLC ARIN

Every record in ARIN's transfer log that moved any part of this IPv6 range, back to 2009.

RDAP lookups

Not looked up. The tracker queries RDAP for changes as they're reported (on first sight, after 24 hours and after seven days); older changes aren't looked up because today's RDAP says nothing about the past.

This page as data: ip/2604.2400..-2604.2400.ffff.ffff.ffff.ffff.ffff.ffff.json