rirtracker

IPv4 range · 2,048 addresses

151.216.16.0/21

Now

RIPE NCC statistics
Reserved, in the latest file
Registry
RIPE NCC
Holder
Not known
From
RDAP, looked up 2026-11-11 18:18 UTC

Latest change

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

Reported
2026-11-02 (RIPE NCC)
Confidence
Strong inference
Inventory
Possible future reissue candidate after hold

Hold

Removed
2026-11-02 (RIPE NCC)
Estimated hold end
2027-05-01 (from the RIPE NCC's published rule; or later while it's still routed)
Now
Possible reissue candidate; not confirmed available.

Timeline (6)

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.

2026-11-02 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
151.216.16.0/21 assigned on 2026-11-01, reserved on 2026-11-02
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2027-05-01. 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 2026-10-23) on 2026-11-01 and reserved on 2026-11-02. 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 2027-05-01. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 151.216.16.0/21 assigned on 2026-11-01, reserved on 2026-11-02 source · retrieved
  2. Before RIPE NCC delegated statistics 2026-11-01 (produced 2026-11-01T22:59:59+00:00), before the change: assigned (dated 2026-10-23) source · retrieved
  3. After RIPE NCC delegated statistics 2026-11-02 (produced 2026-11-02T22:59:59+00:00), after the change: reserved source · retrieved
2026-10-23 RIPE NCC + Registered Apparent reissuance of previously removed resource Strong inference
Statistics
151.216.16.0/21 reserved on 2026-10-22, assigned on 2026-10-23
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it reserved on 2026-10-22 and assigned (dated 2026-10-23) on 2026-10-23. The tracker saw this range removed from registration on 2026-04-20 (151.216.16.0/20), 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: 151.216.16.0/21 reserved on 2026-10-22, assigned on 2026-10-23 source · retrieved
  2. Before RIPE NCC delegated statistics 2026-10-22 (produced 2026-10-22T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2026-10-23 (produced 2026-10-23T21:59:59+00:00), after the change: assigned (dated 2026-10-23) source · retrieved
2021-10-25 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
151.216.16.0/21 assigned on 2021-10-24, reserved on 2021-10-25
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2022-04-23. 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 2021-09-27) on 2021-10-24 and reserved on 2021-10-25. 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 2022-04-23. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 151.216.16.0/21 assigned on 2021-10-24, reserved on 2021-10-25 source · retrieved
  2. Before RIPE NCC delegated statistics 2021-10-24 (produced 2021-10-24T21:59:00+00:00), before the change: assigned (dated 2021-09-27) source · retrieved
  3. After RIPE NCC delegated statistics 2021-10-25 (produced 2021-10-25T21:59:00+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
2021-09-27 RIPE NCC + Registered Apparent reissuance of previously removed resource Strong inference
Statistics
151.216.16.0/21 reserved on 2021-09-26, assigned on 2021-09-27
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it reserved on 2021-09-26 and assigned (dated 2021-09-27) on 2021-09-27. The tracker saw this range removed from registration on 2019-12-31 (151.216.16.0/22), 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: 151.216.16.0/21 reserved on 2021-09-26, assigned on 2021-09-27 source · retrieved
  2. Before RIPE NCC delegated statistics 2021-09-26 (produced 2021-09-26T21:59:00+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2021-09-27 (produced 2021-09-27T21:59:00+00:00), after the change: assigned (dated 2021-09-27) 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
2013-07-15 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
151.216.16.0/21 assigned on 2013-07-14, reserved on 2013-07-15
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 2013-06-14) on 2013-07-14 and reserved on 2013-07-15. 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: 151.216.16.0/21 assigned on 2013-07-14, reserved on 2013-07-15 source · retrieved
  2. Before RIPE NCC delegated statistics 2013-07-14 (produced 2013-07-14T21:59:59+00:00), before the change: assigned (dated 2013-06-14) source · retrieved
  3. After RIPE NCC delegated statistics 2013-07-15 (produced 2013-07-15T21:59:59+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
2013-06-14 RIPE NCC + Registered Apparent reissuance of previously removed resource Strong inference
Statistics
151.216.16.0/21 reserved on 2013-06-13, assigned on 2013-06-14
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it reserved on 2013-06-13 and assigned (dated 2013-06-14) on 2013-06-14. 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: 151.216.16.0/21 reserved on 2013-06-13, assigned on 2013-06-14 source · retrieved
  2. Before RIPE NCC delegated statistics 2013-06-13 (produced 2013-06-13T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2013-06-14 (produced 2013-06-14T21:59:59+00:00), after the change: assigned (dated 2013-06-14) 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
2026-04-20RIPE NCC151.216.16.0/20− DeregisteredRemoved
2026-03-17RIPE NCC151.216.16.0/20+ RegisteredApparent reissuance
2025-06-10RIPE NCC151.216.16.0/20− DeregisteredRemoved
2025-05-13RIPE NCC151.216.16.0/20+ RegisteredApparent reissuance
2024-04-02RIPE NCC151.216.0.0/19− DeregisteredRemoved
2024-03-18RIPE NCC151.216.0.0/19+ RegisteredApparent reissuance
2022-12-20RIPE NCC151.216.16.0/20− DeregisteredRemoved
2022-09-19RIPE NCC151.216.16.0/20+ RegisteredApparent reissuance
2022-08-18RIPE NCC151.216.16.0/20− DeregisteredRemoved
2022-08-02RIPE NCC151.216.16.0/20+ RegisteredApparent reissuance
2019-12-31RIPE NCC151.216.16.0/22− DeregisteredRemoved
2019-12-30RIPE NCC151.216.20.0/22− DeregisteredRemoved
2019-07-30RIPE NCC151.216.20.0/22+ RegisteredApparent reissuance
2019-07-01RIPE NCC151.216.16.0/22+ RegisteredApparent reissuance
2019-06-11RIPE NCC151.216.16.0/22− DeregisteredRemoved
2019-03-08RIPE NCC151.216.16.0/22+ RegisteredApparent reissuance
2019-02-18RIPE NCC151.216.16.0/20− DeregisteredRemoved
2019-01-18RIPE NCC151.216.16.0/20+ RegisteredApparent reissuance
2018-08-27RIPE NCC151.216.16.0/20− DeregisteredRemoved
2018-08-07RIPE NCC151.216.16.0/20+ RegisteredApparent reissuance
2018-04-03RIPE NCC151.216.16.0/20− DeregisteredRemoved
2018-03-14RIPE NCC151.216.16.0/20+ RegisteredApparent reissuance
2017-12-27RIPE NCC151.216.16.0/20− DeregisteredRemoved
2017-11-20RIPE NCC151.216.16.0/20+ RegisteredApparent reissuance
2017-08-15RIPE NCC151.216.0.0/16− DeregisteredRemoved
2017-07-11RIPE NCC151.216.0.0/16+ RegisteredApparent reissuance
2017-05-01RIPE NCC151.216.0.0/19− DeregisteredRemoved
2016-12-14RIPE NCC151.216.0.0/19+ RegisteredApparent reissuance
2014-12-31RIPE NCC151.216.0.0/19− DeregisteredRemoved
2014-11-28RIPE NCC151.216.0.0/19+ RegisteredApparent reissuance
2014-08-05RIPE NCC151.216.0.0/19− DeregisteredRemoved
2014-07-29RIPE NCC151.216.0.0/19+ RegisteredApparent reissuance
2014-07-21RIPE NCC151.216.0.0/19− DeregisteredRemoved
2014-06-05RIPE NCC151.216.0.0/19+ RegisteredApparent reissuance
2014-02-11RIPE NCC151.216.0.0/18− DeregisteredRemoved
2014-01-07RIPE NCC151.216.0.0/18+ RegisteredApparent reissuance
2013-12-20RIPE NCC151.216.0.0/19− DeregisteredRemoved
2013-11-18RIPE NCC151.216.0.0/19+ RegisteredApparent reissuance
2013-04-04RIPE NCC151.216.0.0/17− DeregisteredRemoved
2013-03-22RIPE NCC151.216.0.0/17+ RegisteredApparent reissuance
2013-01-30RIPE NCC151.216.20.0/24− DeregisteredRemoved
2013-01-07RIPE NCC151.216.20.0/24+ RegisteredApparent reissuance
2012-12-20RIPE NCC151.216.0.0 - 151.216.19.255− DeregisteredRemoved
2012-10-10RIPE NCC151.216.16.0/24+ RegisteredApparent reissuance
2012-10-10RIPE NCC151.216.17.0/24+ RegisteredApparent reissuance
2012-10-10RIPE NCC151.216.18.0/23+ RegisteredApparent reissuance
2012-07-25RIPE NCC151.216.16.0/20− DeregisteredRemoved
2012-05-23RIPE NCC151.216.16.0/20+ RegisteredApparent new issuance

Transfer records

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

RDAP lookups

Looked upWhyRegistryHandleOrganizationStatusLast changed
After 7 days RIPE NCC151.0.0.0/8administrative2002-06-25
After 24 hours RIPE NCC151.0.0.0/8administrative2002-06-25
First seen RIPE NCC151.0.0.0/8administrative2002-06-25
After 7 days RIPE NCC151.216.16.0 - 151.216.23.255INFERNO-MNTactive2026-10-23
After 24 hours RIPE NCC151.216.16.0 - 151.216.23.255INFERNO-MNTactive2026-10-23
First seen RIPE NCC151.216.16.0 - 151.216.23.255INFERNO-MNTactive2026-10-23

Organization-level details only; contact details are never kept. RDAP shows the registration when it was looked up, not in the past.

This page as data: ip/151.216.16.0-151.216.23.255.json