rirtracker

IPv4 range · 2,048 addresses

151.216.56.0/21

Now

RIPE NCC statistics
Reserved, in the latest file
Registry
RIPE NCC
Holder
None: it's in the registry's own pool
From
The RIPE NCC's latest statistics

Latest change

− Deregistered Removed (return, revocation or reclamation not publicly distinguishable)

Reported
2025-10-20 (RIPE NCC)
Confidence
Strong inference
Inventory
Possible future reissue candidate after hold

Hold

Removed
2025-10-20 (RIPE NCC)
Estimated hold end
2026-04-18 (from the RIPE NCC's published rule; or later while it's still routed)
Now
Possible reissue candidate; not confirmed available.

Timeline (2)

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.

2025-10-20 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
151.216.56.0/21 assigned on 2025-10-19, reserved on 2025-10-20
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2026-04-18. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. The tracker found it by comparing the RIPE NCC's daily statistics. The RIPE NCC's statistics show it assigned (dated 2025-09-29) on 2025-10-19 and reserved on 2025-10-20. Public sources do not distinguish a voluntary return, revocation, or reclamation. The RIPE NCC holds returned, revoked and reclaimed IPv4 space for 180 days (six months), or longer while still routed, before reissuing it, so the estimated hold end is 2026-04-18. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 151.216.56.0/21 assigned on 2025-10-19, reserved on 2025-10-20 source · retrieved
  2. Before RIPE NCC delegated statistics 2025-10-19 (produced 2025-10-19T21:59:59+00:00), before the change: assigned (dated 2025-09-29) source · retrieved
  3. After RIPE NCC delegated statistics 2025-10-20 (produced 2025-10-20T21:59:59+00:00), after the change: 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
2025-09-29 RIPE NCC + Registered Apparent reissuance of previously removed resource Strong inference
Statistics
151.216.56.0/21 reserved on 2025-09-28, assigned on 2025-09-29
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it reserved on 2025-09-28 and assigned (dated 2025-09-29) on 2025-09-29. The tracker saw this range removed from registration on 2024-12-02 (151.216.48.0/20), so it appears to have been issued again from the RIPE NCC's pool.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 151.216.56.0/21 reserved on 2025-09-28, assigned on 2025-09-29 source · retrieved
  2. Before RIPE NCC delegated statistics 2025-09-28 (produced 2025-09-28T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2025-09-29 (produced 2025-09-29T21:59:59+00:00), after the change: assigned (dated 2025-09-29) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.0)
  2. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.1)
  3. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.2)
  4. : Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-06-05RIPE NCC151.216.48.0/20− DeregisteredRemoved
2026-05-01RIPE NCC151.216.48.0/20+ RegisteredApparent reissuance
2024-12-02RIPE NCC151.216.48.0/20− DeregisteredRemoved
2024-10-11RIPE NCC151.216.48.0/20+ RegisteredApparent reissuance
2024-04-10RIPE NCC151.216.48.0/20− DeregisteredRemoved
2024-03-15RIPE NCC151.216.48.0/20+ RegisteredApparent reissuance
2023-04-17RIPE NCC151.216.48.0/20− DeregisteredRemoved
2023-03-20RIPE NCC151.216.48.0/20+ RegisteredApparent reissuance
2022-10-18RIPE NCC151.216.48.0/20− DeregisteredRemoved
2022-10-10RIPE NCC151.216.48.0/20+ RegisteredApparent reissuance
2018-12-24RIPE NCC151.216.32.0/19− DeregisteredRemoved
2018-11-23RIPE NCC151.216.32.0/19+ RegisteredApparent reissuance
2017-08-15RIPE NCC151.216.0.0/16− DeregisteredRemoved
2017-07-11RIPE NCC151.216.0.0/16+ RegisteredApparent reissuance
2016-10-17RIPE NCC151.216.48.0/20− DeregisteredRemoved
2016-09-14RIPE NCC151.216.48.0/20+ RegisteredApparent reissuance
2016-08-30RIPE NCC151.216.48.0/20− DeregisteredRemoved
2016-07-29RIPE NCC151.216.48.0/20+ RegisteredApparent reissuance
2015-04-20RIPE NCC151.216.48.0/20− DeregisteredRemoved
2015-03-25RIPE NCC151.216.48.0/20+ RegisteredApparent reissuance
2014-09-03RIPE NCC151.216.32.0/19− DeregisteredRemoved
2014-08-13RIPE NCC151.216.32.0/19+ RegisteredApparent reissuance
2014-02-11RIPE NCC151.216.0.0/18− DeregisteredRemoved
2014-01-07RIPE NCC151.216.0.0/18+ RegisteredApparent reissuance
2013-04-04RIPE NCC151.216.0.0/17− DeregisteredRemoved
2013-03-22RIPE NCC151.216.0.0/17+ RegisteredApparent reissuance
2013-03-13RIPE NCC151.216.32.0/19− DeregisteredRemoved
2013-02-15RIPE NCC151.216.32.0/19+ RegisteredApparent reissuance
2013-01-10RIPE NCC151.216.32.0/19− DeregisteredRemoved
2012-12-28RIPE NCC151.216.32.0/19+ RegisteredApparent reissuance

Transfer records

No transfer log has a transfer of any part of this IPv4 range.

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/151.216.56.0-151.216.63.255.json