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.
2020-12-17LACNIC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
191.97.20.0/22 reserved on 2020-12-16, allocated on 2020-12-17
Inventory
Likely issued from LACNIC-controlled inventory
No transfer record matches. LACNIC's statistics show it reserved on 2020-12-16 and allocated (dated 2020-12-17) on 2020-12-17. The tracker saw this range released from hold on 2020-12-01 (191.97.20.0/22), so it appears to have been issued again from LACNIC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing LACNIC's daily statistics: 191.97.20.0/22 reserved on 2020-12-16, allocated on 2020-12-17source · retrieved
BeforeLACNIC delegated statistics 2020-12-16, before the change: reservedsource · retrieved
AfterLACNIC delegated statistics 2020-12-17, after the change: allocated (dated 2020-12-17)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2020-12-01LACNICReleasedReleased from hold (LACNIC lists it as 'available')Strong inference
Statistics
191.97.20.0/22 reserved on 2020-11-30, available on 2020-12-01
Inventory
LACNIC's statistics now list it as 'available'; reissue not confirmed
LACNIC's statistics show it reserved on 2020-11-30 and available on 2020-12-01. LACNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2020-06-05, 179 days earlier. That is LACNIC's own label: whether and when it is reissued is not confirmed.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing LACNIC's daily statistics: 191.97.20.0/22 reserved on 2020-11-30, available on 2020-12-01source · retrieved
BeforeLACNIC delegated statistics 2020-11-30, before the change: reservedsource · retrieved
AfterLACNIC delegated statistics 2020-12-01, after the change: availablesource · retrieved
Classification history for this change (4 versions)
: Released from hold (LACNIC lists it as 'available'), strong inference (classifier 1.3.0)
: Released from hold (LACNIC lists it as 'available'), strong inference (classifier 1.3.1)
: Released from hold (LACNIC lists it as 'available'), strong inference (classifier 1.3.2)
: Released from hold (LACNIC lists it as 'available'), strong inference (classifier 1.4.0) current
2020-06-05LACNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
191.97.20.0/22 allocated on 2020-06-04, reserved on 2020-06-05
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2020-12-05. Possible reissue candidate after this date; not confirmed available.
Removed from active registration. The tracker found it by comparing LACNIC's daily statistics. LACNIC's statistics show it allocated (dated 2014-01-31) on 2020-06-04 and reserved on 2020-06-05. Public sources do not distinguish a voluntary return, revocation, or reclamation. LACNIC holds returned, revoked and reclaimed IPv4 space for 6 calendar months before reissuing it, so the estimated hold end is 2020-12-05. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing LACNIC's daily statistics: 191.97.20.0/22 allocated on 2020-06-04, reserved on 2020-06-05source · retrieved
BeforeLACNIC delegated statistics 2020-06-04, before the change: allocated (dated 2014-01-31)source · retrieved
AfterLACNIC delegated statistics 2020-06-05, 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
2014-01-31LACNIC+ RegisteredApparent new issuanceStrong inference
Statistics
191.97.20.0/22 available on 2014-01-30, allocated on 2014-01-31
Inventory
Likely issued from LACNIC-controlled inventory
No transfer record matches. LACNIC's statistics show it available on 2014-01-30 and allocated (dated 2014-01-31) on 2014-01-31. It moved from LACNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by LACNIC.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing LACNIC's daily statistics: 191.97.20.0/22 available on 2014-01-30, allocated on 2014-01-31source · retrieved
BeforeLACNIC delegated statistics 2014-01-30, before the change: availablesource · retrieved
AfterLACNIC delegated statistics 2014-01-31, after the change: allocated (dated 2014-01-31)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
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.