The RIPE NCC's statistics now list it as 'available'; reissue not confirmed
Timeline (3)
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.
2019-01-08RIPE NCCReleasedReleased from hold (the RIPE NCC lists it as 'available')Observed only
Statistics
178.239.16.0/20 reserved on 2019-01-07, available on 2019-01-08
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed
The RIPE NCC's statistics show it reserved on 2019-01-07 and available on 2019-01-08. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2018-07-12, 180 days earlier. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2019-01-09: Added 178.239.16.0/22; 2019-01-09: Added 178.239.20.0/22; 2019-01-09: Added 178.239.24.0/22), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 178.239.16.0/20 reserved on 2019-01-07, available on 2019-01-08source · retrieved
BeforeRIPE NCC delegated statistics 2019-01-07 (produced 2019-01-07T22:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2019-01-08 (produced 2019-01-08T22:59:59+00:00), after the change: availablesource · retrieved
Classification history for this change (4 versions)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.0)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.1)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.2)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.4.0) current
2018-07-12RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
178.239.16.0/20 allocated on 2018-07-11, reserved on 2018-07-12
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2019-01-08. 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 allocated (dated 2010-07-29) on 2018-07-11 and reserved on 2018-07-12. 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 2019-01-08. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 178.239.16.0/20 allocated on 2018-07-11, reserved on 2018-07-12source · retrieved
BeforeRIPE NCC delegated statistics 2018-07-11 (produced 2018-07-11T21:59:59+00:00), before the change: allocated (dated 2010-07-29)source · retrieved
AfterRIPE NCC delegated statistics 2018-07-12 (produced 2018-07-12T21:59:59+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
2010-07-30RIPE NCC+ RegisteredApparent new issuanceStrong inference
Statistics
178.239.16.0/20 available on 2010-07-29, allocated on 2010-07-30
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2010-07-29 and allocated (dated 2010-07-29) on 2010-07-30. 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: 178.239.16.0/20 available on 2010-07-29, allocated on 2010-07-30source · retrieved
BeforeRIPE NCC delegated statistics 2010-07-29, before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2010-07-30, after the change: allocated (dated 2010-07-29)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
Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this IPv4 range (ARIN's from 2009, the RIPE NCC's from 2012, APNIC's from 2010, LACNIC's from 2016, AFRINIC's from 2018). A transfer between two registries is in both logs.
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.