Possible reissue candidate; not confirmed available.
Timeline (14)
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.
2023-01-02RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
151.216.4.0/22 assigned on 2023-01-01, reserved on 2023-01-02
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2023-07-01. 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 2022-12-16) on 2023-01-01 and reserved on 2023-01-02. 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 2023-07-01. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 assigned on 2023-01-01, reserved on 2023-01-02source · retrieved
BeforeRIPE NCC delegated statistics 2023-01-01 (produced 2023-01-01T22:59:59+00:00), before the change: assigned (dated 2022-12-16)source · retrieved
AfterRIPE NCC delegated statistics 2023-01-02 (produced 2023-01-02T22:59:59+00:00), after the change: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2022-12-16RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
151.216.4.0/22 reserved on 2022-12-15, assigned on 2022-12-16
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it reserved on 2022-12-15 and assigned (dated 2022-12-16) on 2022-12-16. The tracker saw this range removed from registration on 2022-08-29 (151.216.4.0/23), so it appears to have been issued again from the RIPE NCC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 reserved on 2022-12-15, assigned on 2022-12-16source · retrieved
BeforeRIPE NCC delegated statistics 2022-12-15 (produced 2022-12-15T22:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2022-12-16 (produced 2022-12-16T22:59:59+00:00), after the change: assigned (dated 2022-12-16)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2020-10-12RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
151.216.4.0/22 assigned on 2020-10-11, reserved on 2020-10-12
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2021-04-10. 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 2020-09-07) on 2020-10-11 and reserved on 2020-10-12. 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 2021-04-10. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 assigned on 2020-10-11, reserved on 2020-10-12source · retrieved
BeforeRIPE NCC delegated statistics 2020-10-11 (produced 2020-10-11T21:59:59+00:00), before the change: assigned (dated 2020-09-07)source · retrieved
AfterRIPE NCC delegated statistics 2020-10-12 (produced 2020-10-12T21:59:59+00:00), after the change: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2020-09-07RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
151.216.4.0/22 reserved on 2020-09-06, assigned on 2020-09-07
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it reserved on 2020-09-06 and assigned (dated 2020-09-07) on 2020-09-07. The tracker saw this range removed from registration on 2020-01-28 (151.216.0.0/20), so it appears to have been issued again from the RIPE NCC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 reserved on 2020-09-06, assigned on 2020-09-07source · retrieved
BeforeRIPE NCC delegated statistics 2020-09-06 (produced 2020-09-06T21:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2020-09-07 (produced 2020-09-07T21:59:59+00:00), after the change: assigned (dated 2020-09-07)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2019-01-07RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
151.216.4.0/22 assigned on 2019-01-06, reserved on 2019-01-07
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2019-07-06. 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 2018-12-20) on 2019-01-06 and reserved on 2019-01-07. 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 2019-07-06. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 assigned on 2019-01-06, reserved on 2019-01-07source · retrieved
BeforeRIPE NCC delegated statistics 2019-01-06 (produced 2019-01-06T22:59:59+00:00), before the change: assigned (dated 2018-12-20)source · retrieved
AfterRIPE NCC delegated statistics 2019-01-07 (produced 2019-01-07T22:59:59+00:00), after the change: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2018-12-20RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
151.216.4.0/22 reserved on 2018-12-19, assigned on 2018-12-20
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it reserved on 2018-12-19 and assigned (dated 2018-12-20) on 2018-12-20. The tracker saw this range removed from registration on 2018-10-26 (151.216.4.0/22), so it appears to have been issued again from the RIPE NCC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 reserved on 2018-12-19, assigned on 2018-12-20source · retrieved
BeforeRIPE NCC delegated statistics 2018-12-19 (produced 2018-12-19T22:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2018-12-20 (produced 2018-12-20T22:59:59+00:00), after the change: assigned (dated 2018-12-20)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2018-10-26RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
151.216.4.0/22 assigned on 2018-10-25, reserved on 2018-10-26
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2019-04-24. 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 2018-10-05) on 2018-10-25 and reserved on 2018-10-26. 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 2019-04-24. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 assigned on 2018-10-25, reserved on 2018-10-26source · retrieved
BeforeRIPE NCC delegated statistics 2018-10-25 (produced 2018-10-25T21:59:59+00:00), before the change: assigned (dated 2018-10-05)source · retrieved
AfterRIPE NCC delegated statistics 2018-10-26 (produced 2018-10-26T21:59:59+00:00), after the change: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2018-10-05RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
151.216.4.0/22 reserved on 2018-10-04, assigned on 2018-10-05
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it reserved on 2018-10-04 and assigned (dated 2018-10-05) on 2018-10-05. The tracker saw this range removed from registration on 2018-08-28 (151.216.4.0/22), so it appears to have been issued again from the RIPE NCC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 reserved on 2018-10-04, assigned on 2018-10-05source · retrieved
BeforeRIPE NCC delegated statistics 2018-10-04 (produced 2018-10-04T21:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2018-10-05 (produced 2018-10-05T21:59:59+00:00), after the change: assigned (dated 2018-10-05)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2018-08-28RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
151.216.4.0/22 assigned on 2018-08-27, reserved on 2018-08-28
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2019-02-24. 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 2018-08-02) on 2018-08-27 and reserved on 2018-08-28. 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 2019-02-24. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 assigned on 2018-08-27, reserved on 2018-08-28source · retrieved
BeforeRIPE NCC delegated statistics 2018-08-27 (produced 2018-08-27T21:59:59+00:00), before the change: assigned (dated 2018-08-02)source · retrieved
AfterRIPE NCC delegated statistics 2018-08-28 (produced 2018-08-28T21:59:59+00:00), after the change: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2018-08-02RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
151.216.4.0/22 reserved on 2018-08-01, assigned on 2018-08-02
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it reserved on 2018-08-01 and assigned (dated 2018-08-02) on 2018-08-02. The tracker saw this range removed from registration on 2018-07-18 (151.216.4.0/22), so it appears to have been issued again from the RIPE NCC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 reserved on 2018-08-01, assigned on 2018-08-02source · retrieved
BeforeRIPE NCC delegated statistics 2018-08-01 (produced 2018-08-01T21:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2018-08-02 (produced 2018-08-02T21:59:59+00:00), after the change: assigned (dated 2018-08-02)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2018-07-18RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
151.216.4.0/22 assigned on 2018-07-17, reserved on 2018-07-18
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2019-01-14. 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 2018-05-24) on 2018-07-17 and reserved on 2018-07-18. 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 2019-01-14. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 assigned on 2018-07-17, reserved on 2018-07-18source · retrieved
BeforeRIPE NCC delegated statistics 2018-07-17 (produced 2018-07-17T21:59:59+00:00), before the change: assigned (dated 2018-05-24)source · retrieved
AfterRIPE NCC delegated statistics 2018-07-18 (produced 2018-07-18T21:59:59+00:00), after the change: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2018-05-24RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
151.216.4.0/22 reserved on 2018-05-23, assigned on 2018-05-24
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it reserved on 2018-05-23 and assigned (dated 2018-05-24) on 2018-05-24. The tracker saw this range removed from registration on 2017-08-15 (151.216.0.0/16), so it appears to have been issued again from the RIPE NCC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 reserved on 2018-05-23, assigned on 2018-05-24source · retrieved
BeforeRIPE NCC delegated statistics 2018-05-23 (produced 2018-05-23T21:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2018-05-24 (produced 2018-05-24T21:59:59+00:00), after the change: assigned (dated 2018-05-24)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2012-07-25RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
151.216.4.0/22 assigned on 2012-07-24, reserved on 2012-07-25
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 2012-05-23) on 2012-07-24 and reserved on 2012-07-25. 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,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 assigned on 2012-07-24, reserved on 2012-07-25source · retrieved
BeforeRIPE NCC delegated statistics 2012-07-24 (produced 2012-07-24T21:59:59+00:00), before the change: assigned (dated 2012-05-23)source · retrieved
AfterRIPE NCC delegated statistics 2012-07-25 (produced 2012-07-25T21:59:59+00:00), after the change: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2012-05-23RIPE NCC+ RegisteredApparent new issuanceStrong inference
Statistics
151.216.4.0/22 reserved on 2012-05-22, assigned on 2012-05-23
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it reserved on 2012-05-22 and assigned (dated 2012-05-23) on 2012-05-23. It moved from the RIPE NCC's unissued pool to an active registration dated around that day, so it appears to be newly issued by the RIPE NCC.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 151.216.4.0/22 reserved on 2012-05-22, assigned on 2012-05-23source · retrieved
BeforeRIPE NCC delegated statistics 2012-05-22 (produced 2012-05-22T21:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2012-05-23 (produced 2012-05-23T21:59:59+00:00), after the change: assigned (dated 2012-05-23)source · retrieved
Classification history for this change (4 versions)
: Apparent new issuance, strong inference (classifier 1.3.0)
: Apparent new issuance, strong inference (classifier 1.3.1)
: Apparent new issuance, strong inference (classifier 1.3.2)
: Apparent new issuance, strong inference (classifier 1.4.0) current
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.