rirtracker

IPv6 range · 4,951,760,157,141,521,099,596,496,896 addresses

2605:8f00::/36

Now

ARIN statistics
Allocated (dated 2026-03-31) (US), in the latest file
Registry
ARIN
Holder
Not looked up
From
ARIN's latest statistics

Latest change

− Remove Released from hold (ARIN lists it as 'available')

Reported
2025-12-24 (ARIN)
Confidence
Strong inference
Inventory
ARIN's statistics now list it as 'available'; reissue not confirmed

Timeline (3)

Every change the tracker has found, newest first. It covers ARIN from 2008-12-01, the RIPE NCC from 2010-04-23, APNIC from 2008-02-15, LACNIC from 2012-06-29 and AFRINIC from 2012-10-03.

2025-12-24 ARIN − Remove Released from hold (ARIN lists it as 'available') Strong inference
ARIN-Issued
Remove 2605:8F00::-2605:8F00:FFF:FFFF:FFFF:FFFF:FFFF:FFFF
Inventory
ARIN's statistics now list it as 'available'; reissue not confirmed

ARIN's statistics show it reserved on 2025-12-23 and available on 2025-12-25. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2018-06-06, 2758 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2025-12-24: "Remove 2605:8F00::-2605:8F00:FFF:FFFF:FFFF:FFFF:FFFF:FFFF" source · retrieved
  2. Before ARIN delegated statistics 2025-12-23 (produced 2025-12-23T14:00:48+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2025-12-25 (produced 2025-12-25T14:00:48+00:00), after the report: available source · retrieved
Classification history for this change (4 versions)
  1. : Released from hold (ARIN lists it as 'available'), strong inference (classifier 1.3.0)
  2. : Released from hold (ARIN lists it as 'available'), strong inference (classifier 1.3.1)
  3. : Released from hold (ARIN lists it as 'available'), strong inference (classifier 1.3.2)
  4. : Released from hold (ARIN lists it as 'available'), strong inference (classifier 1.4.0) current
2018-06-06 ARIN Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2018-12-06. 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 2018-03-13) on 2018-06-05 and reserved on 2018-06-07. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv6 space for 6 calendar months before reissuing it, so the estimated hold end is 2018-12-06. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 2605:8f00::/36 allocated on 2018-06-06, reserved on 2018-06-07 source · retrieved
  2. Before ARIN delegated statistics 2018-06-05 (produced 2018-06-05T05:00:25+00:00), before the report: allocated (dated 2018-03-13) source · retrieved
  3. After ARIN delegated statistics 2018-06-07 (produced 2018-06-07T05:00:22+00:00), after the report: reserved source · retrieved
Classification history for this change (4 versions)
  1. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
  2. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
  3. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
  4. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2018-03-13 ARIN + Add Registration or organization record change Strong inference
ARIN-Issued
Add 2605:8F00::-2605:8F00:FFF:FFFF:FFFF:FFFF:FFFF:FFFF
Inventory
No effect on ARIN applicant inventory

No transfer record matches. ARIN's statistics show it allocated (dated 2011-08-01) on 2018-03-12 and allocated (dated 2018-03-13) on 2018-03-14. The holder's record is the same before and after, so this is a change to the registration, not a change of holder.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2018-03-13: "Add 2605:8F00::-2605:8F00:FFF:FFFF:FFFF:FFFF:FFFF:FFFF" source · retrieved
  2. Before ARIN delegated statistics 2018-03-12 (produced 2018-03-12T05:12:24+00:00), before the report: allocated (dated 2011-08-01) source · retrieved
  3. After ARIN delegated statistics 2018-03-14 (produced 2018-03-14T05:11:15+00:00), after the report: allocated (dated 2018-03-13) source · retrieved
Classification history for this change (4 versions)
  1. : Registration or organization record change, strong inference (classifier 1.3.0)
  2. : Registration or organization record change, strong inference (classifier 1.3.1)
  3. : Registration or organization record change, strong inference (classifier 1.3.2)
  4. : Registration or organization record change, strong inference (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-03-31ARIN2605:8f00::/32+ AddApparent reissuance
2017-03-15ARIN2605:8f00::/32Transfer logMerger/acquisition
2011-08-01ARIN2605:8f00::/32+ AddApparent new issuance

Transfer records (1)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition2605:8f00::/32 WDT World Discount Telecommunications ARINMaster Call Connections, LLC ARIN

Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this IPv6 range (ARIN's from 2009, the RIPE NCC's from 2012, APNIC's from 2010, LACNIC's from 2016, AFRINIC's from 2018). A transfer between two registries is in both logs.

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/2605.8f00..-2605.8f00.fff.ffff.ffff.ffff.ffff.ffff.json