rirtracker

IPv4 range · 1,024 addresses

144.48.172.0/22

Now

APNIC statistics
Allocated (dated 2019-06-27) (AU), in the latest file
Registry
APNIC
Holder
Not looked up
From
APNIC's latest statistics

Latest change

+ Registered Apparent reissuance of previously removed resource

Reported
2019-06-27 (APNIC)
Confidence
Observed only
Inventory
Likely issued from APNIC-controlled inventory

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.

2019-06-27 APNIC + Registered Apparent reissuance of previously removed resource Observed only
Statistics
144.48.172.0/22 available on 2019-06-27, allocated on 2019-06-28
Inventory
Likely issued from APNIC-controlled inventory

No transfer record matches. APNIC's statistics show it available on 2019-06-27 and allocated (dated 2019-06-27) on 2019-06-28. The tracker saw this range released from hold on 2019-06-26 (144.48.172.0/22), so it appears to have been issued again from APNIC's pool. Another change to this range was reported the day before or after (2019-06-26: Released 144.48.172.0/22), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: 144.48.172.0/22 available on 2019-06-27, allocated on 2019-06-28 source · retrieved
  2. Before APNIC delegated statistics 2019-06-27, before the change: available source · retrieved
  3. After APNIC delegated statistics 2019-06-28, after the change: allocated (dated 2019-06-27) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.0)
  2. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.1)
  3. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.2)
  4. : Apparent reissuance of previously removed resource, observed only (classifier 1.4.0) current
2019-06-26 APNIC Released Released from hold (APNIC lists it as 'available') Observed only
Statistics
144.48.172.0/22 reserved on 2019-06-26, available on 2019-06-27
Inventory
APNIC's statistics now list it as 'available'; reissue not confirmed

APNIC's statistics show it reserved on 2019-06-26 and available on 2019-06-27. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2018-06-19, 372 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2019-06-27: Added 144.48.172.0/22), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: 144.48.172.0/22 reserved on 2019-06-26, available on 2019-06-27 source · retrieved
  2. Before APNIC delegated statistics 2019-06-26, before the change: reserved source · retrieved
  3. After APNIC delegated statistics 2019-06-27, after the change: available source · retrieved
Classification history for this change (4 versions)
  1. : Released from hold (APNIC lists it as 'available'), observed only (classifier 1.3.0)
  2. : Released from hold (APNIC lists it as 'available'), observed only (classifier 1.3.1)
  3. : Released from hold (APNIC lists it as 'available'), observed only (classifier 1.3.2)
  4. : Released from hold (APNIC lists it as 'available'), observed only (classifier 1.4.0) current
2018-06-19 APNIC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
144.48.172.0/22 allocated on 2018-06-19, reserved on 2018-06-20
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2019-06-19. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2016-04-18) on 2018-06-19 and reserved on 2018-06-20. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned IPv4 space a year after the removal or later since 2014, so the tracker estimates the hold ends on 2019-06-19. That is what APNIC has done, not a rule it states. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: 144.48.172.0/22 allocated on 2018-06-19, reserved on 2018-06-20 source · retrieved
  2. Before APNIC delegated statistics 2018-06-19, before the change: allocated (dated 2016-04-18) source · retrieved
  3. After APNIC delegated statistics 2018-06-20, 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
2016-04-18 APNIC + Registered Apparent new issuance Strong inference
Statistics
144.48.172.0/22 available on 2016-04-18, allocated on 2016-04-19
Inventory
Likely issued from APNIC-controlled inventory

No transfer record matches. APNIC's statistics show it available on 2016-04-18 and allocated (dated 2016-04-18) on 2016-04-19. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: 144.48.172.0/22 available on 2016-04-18, allocated on 2016-04-19 source · retrieved
  2. Before APNIC delegated statistics 2016-04-18, before the change: available source · retrieved
  3. After APNIC delegated statistics 2016-04-19, after the change: allocated (dated 2016-04-18) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent new issuance, strong inference (classifier 1.3.0)
  2. : Apparent new issuance, strong inference (classifier 1.3.1)
  3. : Apparent new issuance, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2012-06-08ARIN144.48.0.0/16− RemoveUnresolved
2011-12-06ARIN144.48.0.0/16Not in ARIN-IssuedRemoved

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/144.48.172.0-144.48.175.255.json