rirtracker

IPv4 range · 2,048 addresses

151.216.0.0/21

Now

RIPE NCC statistics
Assigned (dated 2026-06-02), reserved (SK), in the latest file
Registry
Not known
Holder
Not looked up

Latest change

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

Reported
2019-11-14 (RIPE NCC)
Confidence
Strong inference
Inventory
Possible future reissue candidate after hold

Hold

Removed
2019-11-14 (RIPE NCC)
Estimated hold end
2020-05-12 (from the RIPE NCC's published rule; or later while it's still routed)
Now
Possible reissue candidate; not confirmed available.

Timeline (4)

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.

2019-11-14 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
151.216.0.0/21 assigned on 2019-11-13, reserved on 2019-11-14
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2020-05-12. 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 2019-10-21) on 2019-11-13 and reserved on 2019-11-14. 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 2020-05-12. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 151.216.0.0/21 assigned on 2019-11-13, reserved on 2019-11-14 source · retrieved
  2. Before RIPE NCC delegated statistics 2019-11-13 (produced 2019-11-13T22:59:59+00:00), before the change: assigned (dated 2019-10-21) source · retrieved
  3. After RIPE NCC delegated statistics 2019-11-14 (produced 2019-11-14T22:59:59+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
2019-10-21 RIPE NCC + Registered Apparent reissuance of previously removed resource Strong inference
Statistics
151.216.0.0/21 reserved on 2019-10-20, assigned on 2019-10-21
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it reserved on 2019-10-20 and assigned (dated 2019-10-21) on 2019-10-21. The tracker saw this range removed from registration on 2019-09-30 (151.216.0.0/22), 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: 151.216.0.0/21 reserved on 2019-10-20, assigned on 2019-10-21 source · retrieved
  2. Before RIPE NCC delegated statistics 2019-10-20 (produced 2019-10-20T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2019-10-21 (produced 2019-10-21T21:59:59+00:00), after the change: assigned (dated 2019-10-21) 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
2013-05-30 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
151.216.0.0/21 assigned on 2013-05-29, reserved on 2013-05-30
Inventory
Possible future reissue candidate after hold

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 2013-04-29) on 2013-05-29 and reserved on 2013-05-30. Public sources do not distinguish a voluntary return, revocation, or reclamation. The RIPE NCC's current hold for IPv4 space applies to removals from 2014-03-26 on, and this one came earlier, so the tracker gives no estimate. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 151.216.0.0/21 assigned on 2013-05-29, reserved on 2013-05-30 source · retrieved
  2. Before RIPE NCC delegated statistics 2013-05-29 (produced 2013-05-29T21:59:59+00:00), before the change: assigned (dated 2013-04-29) source · retrieved
  3. After RIPE NCC delegated statistics 2013-05-30 (produced 2013-05-30T21:59:59+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
2013-04-29 RIPE NCC + Registered Apparent reissuance of previously removed resource Strong inference
Statistics
151.216.0.0/21 reserved on 2013-04-28, assigned on 2013-04-29
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it reserved on 2013-04-28 and assigned (dated 2013-04-29) on 2013-04-29. The tracker saw this range removed from registration on 2013-04-04 (151.216.0.0/17), 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: 151.216.0.0/21 reserved on 2013-04-28, assigned on 2013-04-29 source · retrieved
  2. Before RIPE NCC delegated statistics 2013-04-28 (produced 2013-04-28T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2013-04-29 (produced 2013-04-29T21:59:59+00:00), after the change: assigned (dated 2013-04-29) 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
2026-09-07RIPE NCC151.216.6.0/24− DeregisteredRemoved
2026-08-05RIPE NCC151.216.6.0/24+ RegisteredApparent reissuance
2026-07-21RIPE NCC151.216.5.0/24− DeregisteredRemoved
2026-07-14RIPE NCC151.216.5.0/24+ RegisteredApparent reissuance
2026-06-02RIPE NCC151.216.4.0/24+ RegisteredApparent reissuance
2026-05-15RIPE NCC151.216.1.0/24− DeregisteredRemoved
2026-04-01RIPE NCC151.216.1.0/24+ RegisteredApparent reissuance
2026-03-24RIPE NCC151.216.2.0/23− DeregisteredRemoved
2026-03-09RIPE NCC151.216.0.0/24− DeregisteredRemoved
2026-02-20RIPE NCC151.216.2.0/23+ RegisteredApparent reissuance
2026-02-16RIPE NCC151.216.0.0/24+ RegisteredApparent reissuance
2025-04-22RIPE NCC151.216.0.0/20− DeregisteredRemoved
2025-03-24RIPE NCC151.216.0.0/20+ RegisteredApparent reissuance
2024-04-02RIPE NCC151.216.0.0/19− DeregisteredRemoved
2024-03-18RIPE NCC151.216.0.0/19+ RegisteredApparent reissuance
2023-10-30RIPE NCC151.216.0.0/22− DeregisteredRemoved
2023-09-29RIPE NCC151.216.0.0/22+ RegisteredApparent reissuance
2023-07-03RIPE NCC151.216.0.0/22− DeregisteredRemoved
2023-06-01RIPE NCC151.216.0.0/22+ RegisteredApparent reissuance
2023-01-02RIPE NCC151.216.4.0/22− DeregisteredRemoved
2022-12-16RIPE NCC151.216.4.0/22+ RegisteredApparent reissuance
2022-12-14RIPE NCC151.216.0.0/22− DeregisteredRemoved
2022-11-18RIPE NCC151.216.0.0/22+ RegisteredApparent reissuance
2022-09-05RIPE NCC151.216.2.0/24− DeregisteredRemoved
2022-08-29RIPE NCC151.216.4.0/23− DeregisteredRemoved
2022-08-04RIPE NCC151.216.0.0/23− DeregisteredRemoved
2022-07-11RIPE NCC151.216.0.0/23+ RegisteredApparent reissuance
2022-07-04RIPE NCC151.216.2.0/24+ RegisteredApparent reissuance
2022-07-04RIPE NCC151.216.6.0/24− DeregisteredRemoved
2022-07-01RIPE NCC151.216.3.0/24− DeregisteredRemoved
2022-06-07RIPE NCC151.216.2.0/24− DeregisteredRemoved
2022-05-31RIPE NCC151.216.6.0/24+ RegisteredApparent reissuance
2022-05-05RIPE NCC151.216.3.0/24+ RegisteredApparent reissuance
2022-05-04RIPE NCC151.216.2.0/24+ RegisteredApparent reissuance
2022-01-04RIPE NCC151.216.0.0/23− DeregisteredRemoved
2021-11-03RIPE NCC151.216.2.0/24− DeregisteredRemoved
2021-10-27RIPE NCC151.216.2.0/24+ RegisteredApparent reissuance
2021-09-20RIPE NCC151.216.2.0/24− DeregisteredRemoved
2021-09-15RIPE NCC151.216.3.0/24− DeregisteredRemoved
2021-09-10RIPE NCC151.216.2.0/24+ RegisteredApparent reissuance
2021-08-26RIPE NCC151.216.4.0/23+ RegisteredApparent reissuance
2021-08-05RIPE NCC151.216.2.0/24− DeregisteredRemoved
2021-08-02RIPE NCC151.216.3.0/24+ RegisteredApparent reissuance
2021-02-05RIPE NCC151.216.2.0/24+ RegisteredApparent reissuance
2021-01-04RIPE NCC151.216.0.0/23+ RegisteredApparent reissuance
2020-11-11RIPE NCC151.216.3.0/24− DeregisteredRemoved
2020-10-12RIPE NCC151.216.4.0/22− DeregisteredRemoved
2020-09-16RIPE NCC151.216.3.0/24+ RegisteredApparent reissuance
2020-09-15RIPE NCC151.216.2.0/24− DeregisteredRemoved
2020-09-07RIPE NCC151.216.0.0/24− DeregisteredRemoved
2020-09-07RIPE NCC151.216.4.0/22+ RegisteredApparent reissuance
2020-08-13RIPE NCC151.216.2.0/24+ RegisteredApparent reissuance
2020-08-10RIPE NCC151.216.1.0/24− DeregisteredRemoved
2020-08-06RIPE NCC151.216.1.0/24+ RegisteredApparent reissuance
2020-06-24RIPE NCC151.216.0.0/24+ RegisteredApparent reissuance
2020-01-28RIPE NCC151.216.0.0/20− DeregisteredRemoved
2019-12-27RIPE NCC151.216.0.0/20+ RegisteredApparent reissuance
2019-09-30RIPE NCC151.216.0.0/22− DeregisteredRemoved
2019-09-20RIPE NCC151.216.0.0/22+ RegisteredApparent reissuance
2019-08-26RIPE NCC151.216.0.0/20− DeregisteredRemoved

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/151.216.0.0-151.216.7.255.json